Configuration
128 questions from the Configuration domain of the ServiceNow Implementation Specialist – Data Foundations (CIS-DF) exam, each with its answer and an explanation. Read them through as revision, then sit the full practice exam to test yourself on them under multiple-choice conditions.
1.If a dynamic rule exists on a child class and also on its parent class, which rule applies?
Answer
- Child class rule
Reconciliation rules are inherited down the class hierarchy, but a rule defined on a child class overrides the one it would inherit from its parent, so the most specific rule wins. Priority only ranks data sources within static rules; it doesn't decide between classes.
2.What are Suggested Relationships primarily used for?
Answer
- Providing recommended CI-to-CI relationship types for users
Suggested relationships, defined per class in CI Class Manager, list the relationship types that make sense between two classes, such as a database that Runs on a server. When someone adds a relationship by hand they are offered those types, which keeps nonsensical relationships out of the CMDB. They don't build maps, validate service membership or record changes.
3.Under which condition does a dynamic rule from a parent class apply?
Answer
- If the child class has no dynamic rule
A dynamic rule on a parent class is inherited by its child classes, but only while a child has no dynamic rule of its own for that attribute. Once the child defines one, the child's rule overrides the parent's. How the data was collected and the state of any static rules don't change this.
4.Which of the following is an example of a sensible suggested relationship?
Answer
- Database runs on Server
A suggested relationship should describe a real dependency in the right direction: a database depends on, and runs on, a server. A server doesn't run on a database, racks hold servers rather than run on them, and incidents are task records, not CIs, so they can't be part of a CI relationship.
5.CMDB Data Refresh rules help determine what?
Answer
- When lower-priority sources may overwrite stale data
Reconciliation rules normally stop a lower-priority source from overwriting an attribute owned by a higher-priority one. A data refresh rule limits how long that lasts: if the higher-priority source hasn't updated the CI within the refresh period, its data is treated as stale and a lower-priority source may update it. Deleting CIs, approvals and service maps are handled elsewhere.
6.Why should organizations avoid creating too many custom CMDB classes?
Answer
- It increases governance complexity and reduces standardization
Every custom class needs its own identification and reconciliation rules, ownership and health configuration, and it sits outside the standard model that CSDM, Discovery and Service Graph connectors expect. Many of them make the CMDB harder to govern and less standard. Custom classes don't break ITOM, update sets or CMDB Health, which can all be set up to handle them.
7.What does the IRE examine after processing the incoming payload when applying a dynamic rule?
Answer
- All Multisource CMDB attribute entries for that CI
Dynamic reconciliation rules rely on Multisource CMDB, which keeps the value each source reported for each attribute. After processing the payload, the IRE looks at every source's entry for that CI and attribute, then applies the rule, such as Most Reported or Last Reported, to pick the value written to the CI. Schedules, ACLs and health scores play no part in this.
8.Why does a static reconciliation rule not affect the outcome when a dynamic rule is defined for the same attribute?
Answer
- Dynamic rules override static rules
When an attribute has both a static and a dynamic reconciliation rule, the dynamic rule takes precedence, so the static rule's source priorities aren't used for that attribute. Static rules aren't limited to parent classes or by field type, and both kinds are applied by the IRE, not by transform maps.
9.Which statement correctly describes Reconciliation Rules?
Answer
- They control which sources can update which CI attributes
Reconciliation rules say which data sources are authorized to update which attributes of a class, and in what priority, so a less trusted source can't overwrite data from a more trusted one. Matching incoming data to an existing CI is the job of identification rules, and retirement and class mapping are handled elsewhere.
10.What is the purpose of Dependent Relationships in CI Class Manager?
Answer
- To define upstream and downstream dependencies between CIs
Dependent relationships describe how a class depends on another class, such as a web application that Runs on an application server. They capture the upstream and downstream dependencies between CIs, and the IRE also uses them to identify a dependent CI in the context of the CI it depends on. Blocking sources, merging classes and model data are handled elsewhere.
11.What is the recommended approach when eliminating a custom class?
Answer
- Reassign CIs into a standard class and update attribute mappings
Retiring a custom class should keep its data: move its CIs into the most suitable standard class and map their attributes to that class's fields. Deleting the table from sys_db_object, or exporting and deleting the records, loses data and can break references, and deactivating the class leaves its CIs stranded in it.
12.Which data set is evaluated by dynamic rules during reconciliation?
Answer
- Multisource CMDB history of attribute values
A dynamic rule compares the values that different sources have reported for the attribute, which Multisource CMDB stores, rather than only the incoming payload or the CI's current value. That is what lets a rule such as Most Reported count how many sources report each value.
13.A CI attribute has both a static reconciliation rule and a dynamic rule. Which one wins?
Answer
- Dynamic rule
If an attribute has both a static and a dynamic reconciliation rule, the dynamic rule wins. Dynamic rules choose a value from what all sources have reported in Multisource CMDB, for example the most reported or the last reported value. The IRE always keeps a single value, never a combination, and priority numbers only rank sources within static rules.
14.What is the main purpose of a CI class's Attributes tab?
Answer
- Manage the fields available for CIs of that class
The Attributes tab lists the fields of the class, including those it inherits from parent classes, and is where you add or change them. Integration endpoints, discovery schedules and audit ownership are configured elsewhere.
15.Which of the following can be edited directly from the CI Class Manager's Basic Info tab?
Answer
- Class Display Name and Table Name
The Basic Info tab holds a class's core details, such as its display name and table name. Suggested relationships have their own tab, source precedence is set in reconciliation rules, and health KPIs are configured for CMDB Health.
16.What does the CI List tab show?
Answer
- A filtered list of CIs that belong to the selected class
The CI List tab in CI Class Manager shows the CIs of the selected class, so you can review a class's records without leaving the class. Health scores, relationship maps and discovery sources are viewed elsewhere.
17.Why is the Principal Class designation important?
Answer
- It determines which CIs appear in common ITSM CI reference fields
Principal classes are the classes offered in the Configuration item field on task forms such as incident, problem and change, so users pick from meaningful CIs rather than every record in the CMDB. The designation has no effect on reconciliation, health scoring or audits.
18.Which CI Class Manager tab lists all inbound/outbound relationship rules for the class?
Answer
- All Relationship Rules
The All Relationship Rules tab lists every relationship rule involving the class, both inbound and outbound, in one place. Suggested Relationships shows only the suggested relationship types, CI List shows the class's CIs, and Basic Info holds the class's core details.
19.What does the Most Reported dynamic rule attempt to determine?
Answer
- The value reported by the greatest number of discovery sources
Most Reported picks the value that the largest number of sources report for the attribute, so when sources disagree the majority wins. Last Reported is the rule that picks the most recent value, and choosing by source priority is what static reconciliation rules do.
20.Which statement about CI Class Manager is TRUE?
Answer
- CI Class Manager centralizes configuration for classes, attributes, identification, and reconciliation
CI Class Manager brings each class's configuration together: its place in the hierarchy, attributes, identification rules, reconciliation rules and health settings. It's used in production and can create and change classes, while the CMDB Health dashboard remains where data quality is reported.
21.When a dynamic rule is defined for a CI attribute at the Server class and another at the Windows Server class, which will apply to a Windows Server instance?
Answer
- Only the Windows Server rule
The rule on the more specific class wins, so a Windows Server CI uses the Windows Server rule. The Server rule still applies to child classes that have no rule of their own. One rule decides each attribute, so results are never averaged.
22.Before creating a brand-new CMDB class, what is considered a leading practice?
Answer
- Install ServiceNow's CMDB CI Class Models store app to check for existing options
ServiceNow publishes additional classes in the CMDB CI Class Models store app, so install it and check whether a standard class already fits before creating your own. A new class should extend an existing class in the hierarchy and be planned with its attributes and identification rules, and base classes should never be deleted.
23.Which CMDB feature allows you to define data precedence rules to ensure that a trusted data source (e.g., ServiceNow Discovery) is not overwritten by a lower-priority source (e.g., a manual spreadsheet import) for specific CI attributes?
Answer
- Reconciliation Rule
Reconciliation rules set which data sources may update which attributes of a class, and in what priority, so a trusted source such as Discovery isn't overwritten by a lower-priority one such as a spreadsheet import. De-duplication templates, de-duplication tasks and the Duplicate CI Remediator deal with duplicate records, and Data Manager policies retire, archive and delete CIs.
24.Service owners complain that when they create relationships for the Apache Web Server class, the relationship picker shows many relationship types that do not make sense. The CMDB team wants to give them a short, guided list of valid relationships (for example, that Apache Web Server exports to Application Software) and manage this list centrally at the class level. These options should appear when users create relationships from Apache Web Server CIs. Which CMDB configuration should you use?
Answer
- Suggested relationships stored in the cmdb_rel_type_suggested table for Apache Web Server
Suggested relationships, stored in the cmdb_rel_type_suggested table, define for each class which relationship types make sense, such as Apache Web Server Exports to Application Software. Users creating a relationship from a CI of that class are offered that short list. Reconciliation rules govern which sources update data, dependent relationships help identify dependent CIs, CMDB groups select CIs, and health inclusion rules scope health scoring.
25.Before creating a brand-new custom CI class to meet a business requirement, what actions should a CMDB Administrator take first to avoid technical debt and prevent duplication of existing functionality? (Select three options)
Answers
- Search existing base system CI classes to see if one can be reused
- Extend an existing standard CI class instead of creating a brand-new one
- Install and review the CMDB CI Class Models Store application
Before adding a class, look for an existing base class that already fits and install the CMDB CI Class Models store app to check the extra classes ServiceNow provides. If something new is still needed, extend a standard class so it inherits its attributes and rules. Tables created outside the CMDB hierarchy, and changes to the base cmdb_ci table, create technical debt and can break CMDB features.
26.When configuring a Dynamic Reconciliation Rule to resolve attribute conflicts from Multisource CMDB data, which of the following are valid validation types (statuses) you can select? (Choose two.)
Answers
- Smallest value
- Most reported
Dynamic reconciliation rules choose a value from what all sources have reported in Multisource CMDB, using types such as Most reported, Last reported, Largest value and Smallest value. Owner approved, Last created, Highest priority and Last updated aren't dynamic rule types; ranking sources by priority is what static reconciliation rules do.
27.A “Largest Value” rule is selected for disk capacity, but Multisource CMDB contains no numeric entries for that attribute. What happens?
Answer
- The dynamic rule is skipped and static rules apply
Largest value can only compare numbers. If Multisource CMDB holds no numeric values for the attribute, the dynamic rule can't choose one, so it's skipped and the static reconciliation rules decide instead. The IRE doesn't convert strings to numbers, default to 0 or fail the update.
28.What is the primary function of a Dynamic Reconciliation Rule?
Answer
- Select the best attribute value based on Multisource CMDB data
A dynamic reconciliation rule picks the best value for an attribute from what all sources have reported in Multisource CMDB, for example the most reported value. Limiting which sources may update an attribute is what static reconciliation rules do, and dynamic rules have nothing to do with the order CIs are created in.
29.What does enabling the Extensible flag on a class allow you to do?
Answer
- Allow child classes to be created based on this class
Marking a class as extensible lets other classes extend it, so you can create child classes that inherit its attributes. It doesn't protect the class during upgrades, make it discoverable or affect cloning.
30.Dynamic Reconciliation Rules become available only after enabling which feature?
Answer
- Multisource CMDB
Dynamic reconciliation rules choose between the values different sources have reported, and those values are only kept when Multisource CMDB is enabled. Without it the CMDB holds only the current value, so there is nothing to compare. CI Class Manager is where the rules are configured, not what makes them available.
31.Which of these is a typical element used in Identification Rule criteria?
Answer
- Serial Number or Device ID
Identification rules match CIs on attributes that are unique and stable for each device, such as serial number, device ID, MAC address or FQDN. Business service names can change or repeat, incident numbers belong to tasks, and a MID Server's hostname describes the discovery infrastructure, not the CI.
32.Which role is required to create new CMDB classes?
Answer
- sn_cmdb_admin or admin
Creating classes changes the CMDB data model, so it needs the sn_cmdb_admin role or admin. The other roles are for working with CI and task data or for administering Discovery, not for changing the data model.
33.Why do organizations use dynamic rules instead of relying solely on static rules?
Answer
- Dynamic rules evaluate actual attribute patterns, not just priority
Static rules always prefer the highest-priority source, whatever it reports. Dynamic rules look at the values themselves across all sources, for example choosing the most reported one, which can give a better result when sources disagree. They still need to be configured, they aren't faster, and static rules work with any source, including cloud ones.
34.Identification Rules determine which of the following?
Answer
- How CIs are uniquely recognized in the CMDB
Identification rules define the attributes, such as serial number or name, that uniquely identify a CI of a class, so the IRE can tell whether incoming data matches an existing CI or is new. Which sources may update attributes is set by reconciliation rules, relationships come from discovery and integrations, and dashboards have their own filters.
35.What is the main purpose of the CI Class Manager in ServiceNow?
Answer
- To centrally configure CMDB class structures, attributes, and rules
CI Class Manager is where the CMDB class model is configured in one place: the class hierarchy, attributes, identification and reconciliation rules, relationship rules and other class settings. It doesn't merge duplicates, schedule discovery or build service maps.
36.The Windows Server class has two reconciliation rules configured for the RAM (MB) attribute: Static Reconciliation Rule: Prioritizes SCCM (Priority 100) over all other sources. Dynamic Reconciliation Rule: Set to Largest Value. An incoming payload from ServiceNow Discovery reports RAM as 8192 MB, while the SCCM data reports 4096 MB. The CI record updates to 8192 MB (ServiceNow’s value), despite the Static Rule prioritizing SCCM. What is the most likely cause of this behavior?
Answer
- The Dynamic Reconciliation Rule (Largest Value) takes precedence over the Static Reconciliation Rule, overriding the priority set for SCCM.
When an attribute has both a static and a dynamic reconciliation rule, the dynamic rule wins. Largest Value picks the highest value any source has reported in Multisource CMDB, so Discovery's 8192 MB is kept even though the static rule prefers SCCM. Last update doesn't decide once reconciliation rules apply, and with Multisource CMDB turned off the dynamic rule couldn't run at all.
37.You are troubleshooting why a “Tomcat“ application server is not being created in the CMDB. The IRE log says “Dependent CI requires a valid parent.“ Which of the following best describes the Identification Rule requirement for a Tomcat Server?
Answer
- It is a Dependent CI and requires a relationship to a Hardware/Computer CI.
A Tomcat server is a dependent CI: it runs on a host, and its identity includes the host it runs on. The IRE must identify that host, a hardware or computer CI, before it can create the Tomcat CI, which is why it reports that the dependent CI needs a valid parent. Business applications are linked to software through CSDM, but that link plays no part in identification.
38.Cloud Dimensions is preparing to implement a new data governance policy that utilizes Dynamic Reconciliation Rules to leverage historical CI data from all discovery sources (Multisource CMDB). When the CMDB administrator attempts to configure a new Dynamic Reconciliation Rule in the CI Class Manager, the option is unavailable. What mandatory, two-part system configuration is required to activate the underlying Multisource CMDB functionality needed to enable Dynamic Reconciliation Rules?
Answer
- The system property glide.identification_engine.multisource_enabled must be set to true and the ITOM Discovery License plugin must be installed.
Dynamic reconciliation rules depend on Multisource CMDB, which needs the glide.identification_engine.multisource_enabled property set to true and the ITOM Discovery License plugin installed. The other properties, jobs and plugins listed deal with duplicates, update behavior, health scores and analytics, and don't enable Multisource CMDB.
39.A CMDB Administrator notices that certain Linux servers running multiple instances of Tomcat Web Server are incorrectly mapped to only one CI record in the CMDB, leading to an inaccurate inventory of running applications. This issue prevents accurate patching. Analysis reveals the identification rule for Tomcat uses only the Application Name. What is the best practice solution to ensure each Tomcat instance is mapped as a unique CI (preventing an “overloaded CI”)? choose two options
Answers
- Modify the Identification Rule for Tomcat Web Server to include the Configuration File Path or Installation Directory Path as criterion attributes.
- Ensure the CI is dependent on its host server, preventing name conflicts across different hosts.
Identifying Tomcat by name alone merges every instance on a host into one CI. Adding an attribute that differs between instances, such as the installation or configuration file path, keeps them apart, and identifying the CI as dependent on its host stops instances on different servers from colliding. Principal class settings and duplicate thresholds don't change how instances are identified.
40.The CMDB team is migrating reconciliation management for the Windows Server class. They currently rely on ServiceNow Discovery for most attributes (Priority 100), but need to ensure Altiris maintains the highest priority (Priority 50) specifically for the Name attribute, which is required for reporting. The administrator must configure this granular control in the CI Class Manager. What configuration artifact is used to apply priority to a specific subset of attributes within a single CI class?
Answer
- A Static Reconciliation Rule setting Altiris Priority 50, filtered to apply ONLY to the Name attribute.
Static reconciliation rules give a data source a priority for specific attributes of a class, where a lower number means a higher priority. A rule giving Altiris priority 50 for only the Name attribute lets Altiris win on Name while Discovery keeps the other attributes. A dynamic rule picks values by its own logic rather than by source, and data refresh rules only decide when stale data may be overwritten.
41.An administrator is configuring an identification rule for a custom hardware CI. If the Allow null attributes option is set to false for an Identifier Entry, what must be true for the IRE to attempt matching using that entry?
Answer
- All criterion attributes defined in that identifier entry must have values.
With Allow null attributes set to false, an identifier entry is only used when every one of its criterion attributes has a value in the payload; if any is empty, the IRE skips that entry. The setting concerns only whether the criterion attributes have values, not how recently the CI was updated or how its class is configured.
42.Which of the following is the key distinction between a Hosting Rule and a Containment Rule when defining Dependent Relationships in CI Class Manager?
Answer
- Hosting rules are one level deep and always involve resources that are either physical or virtual hardware.
Hosting rules describe a CI that runs on physical or virtual hardware, such as software on a server, and are only one level deep. Containment rules describe logical structure, such as a database inside a database instance, and can be nested over several levels. Both help the IRE identify dependent CIs, and both are used by horizontal Discovery as well as Service Mapping.
43.When considering the creation of a new CI class in the CMDB, what is the single most important action recommended by ServiceNow to avoid license, governance, and insight implications?
Answer
- Avoid the creation of new CMDB classes
ServiceNow recommends avoiding new CMDB classes where possible, because custom classes bring license, governance and insight implications. Check first, for example in the CMDB CI Class Models store app, whether a standard class already fits. If a new class really is needed, extend the most suitable existing class rather than cmdb_ci itself.
44.In CI Class Manager, which element controls whether a CI class is visible and filterable in the “Configuration Item“ reference field on ITSM forms (such as Incident, Problem, Change), helping to reduce clutter for end users?
Answer
- Principal Class
Marking a class as a principal class includes it in the default filter on the Configuration item field of incident, problem and change forms, so users choose from meaningful CIs. The extensible flag controls whether a class can have child classes, CI identifiers drive identification, and Managed by group records ownership.
45.A custom identification rule for a proprietary application includes three criterion attributes. If the administrator sets the Allow null attributes option to false for this identifier entry, what does the IRE require to attempt matching the incoming payload with existing CIs? (Select two options)
Answers
- All three criterion attributes must contain values in the incoming payload.
- The incoming CI must have a relationship defined to a parent host.
With Allow null attributes set to false, every criterion attribute in the identifier entry must have a value in the payload, so all three are needed. For an application identified as a dependent CI, the IRE also needs its relationship to the parent host. Principal class settings and update dates don't affect matching.
46.When configuring the Reconciliation Rules for the Windows Server class, the administrator observes the option to Preview Data. What specific information does this Preview Data functionality provide?
Answer
- The priority order of discovery sources for each individual attribute based on all defined static and dynamic rules.
Preview Data shows, for each attribute of the class, the order in which discovery sources take priority once all the static and dynamic reconciliation rules are applied, so you can check which source will win. It doesn't show update history, health failures or raw multisource records.
47.Cloud Dimensions wants to use Dynamic Reconciliation Rules and the CMDB 360 View to retain historical attribute values from multiple discovery sources. What two prerequisites must the CMDB Administrator fulfill to enable this functionality? (Select 2)
Answers
- Set the system property glide.identification_engine.multisource_enabled to true (referenced as required Multisource system property).
- Install the ITOM Discovery License plugin.
Dynamic reconciliation rules and the CMDB 360 view rely on Multisource CMDB, which needs the glide.identification_engine.multisource_enabled property set to true and the ITOM Discovery License plugin installed. Reconciliation rules on every class aren't required, and the Get Well job calculates health scores.
48.Cloud Dimensions recently integrated a third-party discovery tool (LANDesk) alongside ServiceNow Discovery. Users report that the RAM (MB) attribute on Windows Servers flips between 4096 MB and 2048 MB after each daily scan, leading to inaccurate capacity planning. Cloud Dimensions wants LANDesk to be the authoritative source for the RAM (MB) attribute, but ServiceNow should maintain priority for all other attributes for the Windows Server class. What is the most effective solution to stop this attribute flapping while meeting the prioritization requirement?
Answer
- Configure two Static Reconciliation Rules in the CI Class Manager for Windows Servers: one setting LANDesk as Priority 100 applied only to the RAM (MB) attribute, and a second rule setting ServiceNow as Priority 100 applied to all attributes excluding RAM (MB)
Two static reconciliation rules give each source priority for different attributes: LANDesk for RAM (MB) only, and ServiceNow for every other attribute. With a clear winner for RAM, the value stops flipping. Largest Value would pick the bigger number rather than LANDesk's value, and turning off LANDesk or Multisource CMDB doesn't make LANDesk authoritative.
49.You have implemented ServiceNow Discovery and it is running daily. You recently installed the Service Graph Connector for Microsoft SCCM. Users are reporting that the ‘Disk Space‘ attribute on their servers is flipping back and forth between two different values every day. What is the most likely cause and the correct resolution ?
Answer
- You must configure Reconciliation Rules to set a priority (Precedence) for which data source is trusted for the ‘Disk Space‘ attribute.
Two sources updating the same attribute with no reconciliation rule overwrite each other on every run, so the value flips. A reconciliation rule giving one source priority for Disk Space settles it. A wrong identification rule would create duplicate CIs rather than a flipping value, and changing schedules only changes which source writes last.
50.A CMDB Administrator is configuring a new custom class to extend the Application [cmdb_ci_appl] table. Before creating the new class, what is the leading practice recommended by ServiceNow?
Answer
- First install the ServiceNow CMDB CI Class Models Store application to check if a suitable base system class already exists
ServiceNow regularly adds classes through the CMDB CI Class Models store app, so install it first and check whether a suitable class already exists before creating your own. Principal class, extensible settings and relationships come later, once you know a new class is needed.
51.What is the purpose of setting a specific CI class as a Principal Class in the CI Class Manager?
Answer
- It filters CIs appearing in the “Configuration Item“ reference field on ITSM forms, simplifying user selection.
Principal classes are the ones offered by default in the Configuration item field of incident, problem and change forms, which keeps the list to meaningful CIs. Health inclusion, reconciliation priority and whether a class can be extended are set elsewhere.
52.Which of the following describes the key function of the Derived filter within the Attributes tab of the CI Class Manager?
Answer
- Displays only attributes that have been inherited from parent classes.
The Derived filter on the Attributes tab shows only the attributes a class inherits from its parent classes. Added shows attributes defined on the class itself, and All shows both.
53.When testing a new custom Identification Rule for a proprietary application using the “Scripts – Background“ utility, what happens the second time the administrator executes the identical script payload for the same CI, assuming the rule is correctly configured and the initial run was successful?
Answer
- No change takes place because the CI is matched based on the Identification Rule, preventing a duplicate from being created.
The first run found no matching CI, so the IRE created one. Running the identical payload again, the identification rule matches that CI, and since nothing in the payload differs, nothing changes and no duplicate is created. A de-duplication task needs several existing matches, and a reclassification task needs a change of class.
54.Which of the following describes a poor choice for an application CI identification rule because it often leads to overloaded CIs when multiple instances run on a single host?
Answer
- Application Name
Several instances of the same software on one host usually share an application name, so identifying them by name alone merges them into one overloaded CI. Attributes that differ per instance, such as the installation directory, configuration file path or running process command, keep them apart.
55.Which configuration action in the CI Class Manager allows an administrator to define that the Serial Number field must be populated for the Server class, even if the parent table (cmdb_ci) does not enforce this as mandatory?
Answer
- Using a Dictionary Override on the Serial Number field for the Server class.
A dictionary override changes a field's properties, such as making it mandatory, for one class and its children without changing the parent table, so Serial Number can be required for servers only. Principal class, extensible and identification rules don't make a field mandatory.
56.Which of the listed are correct rule types that can be applied within Dynamic Reconciliation Rules? (Choose 5)
Answers
- First Reported
- Most Reported
- Smallest Value
- Largest Value
- Last Reported
Dynamic reconciliation rules can pick the first reported, most reported or last reported value, or the largest or smallest value, from what the sources have reported in Multisource CMDB. Oldest Created isn't a dynamic rule type.
57.In the context of creating a custom CI class, what is the most important action aimed at preventing licensing, management, and visibility issues?
Answer
- Installing the ServiceNow CMDB CI Class Models application from the Store to check if a relevant base class already exists.
Before creating a class, install the CMDB CI Class Models store app and check whether ServiceNow already provides a suitable class. Using a standard class avoids the licensing, governance and visibility problems that custom classes bring. Principal class, recommended fields and dictionary overrides don't address those problems.
58.What is the main advantage of using Dynamic Reconciliation Rules compared to Static Reconciliation Rules?
Answer
- They allow selecting the attribute value (e.g., Most Reported, Largest Value) from Multi-source CMDB data, rather than relying solely on data source priority.
Dynamic reconciliation rules choose an attribute's value from what all sources have reported in Multisource CMDB, using logic such as Most Reported or Largest Value, instead of relying only on source priority. Prioritizing a source for an attribute is what static rules do, and dynamic rules have to be configured; enabling Multisource CMDB doesn't create them.
59.The system property glide.identification_engine.enable_identifier_optional_condition is set to true. What does this enable the CMDB administrator to configure for Identification Rule entries?
Answer
- The ability to set optional conditions on non-lookup type fields within identifier entries.
By default, optional conditions on identifier entries can only be applied to lookup-type fields. Setting glide.identification_engine.enable_identifier_optional_condition to true adds advanced options to non-lookup entries, so conditions can narrow which records are searched for a match there too.
60.Which of the following describes the purpose of the Extensible flag property in the CI Class Manager?
Answer
- It determines if the class can be extended by other classes, allowing creation of new subclasses that inherit properties.
The extensible flag says whether other classes may extend the class, so new child classes can inherit its attributes. Principal class controls the Configuration item field on task forms, and dynamic reconciliation depends on Multisource CMDB.
61.What is the purpose of creating a Data Refresh Rule when a higher-priority data source (e.g., ServiceNow) and a lower-priority data source (e.g., LANDesk) have static reconciliation rules configured?
Answer
- Allow a lower-priority source to update CI attributes if the higher-priority source has failed to update the CI within a defined period.
A data refresh rule sets how long a higher-priority source's data stays authoritative. If that source hasn't updated the CI within the period, a lower-priority source is allowed to update its attributes, so the data doesn't go stale. It doesn't force updates, handle duplicates or disable dynamic rules.
62.An administrator is configuring an Identification Rule for the Apache Web Server class. They check the Allow fallback to parent‘s rules option for an identifier entry. What does this configuration enable the IRE to do?
Answer
- If no match is found using the Apache criterion attributes, the IRE attempts matching using the parent class‘s criterion attributes (e.g., the Application rule).
With Allow fallback to parent's rules checked, if the class's own identifier entries find no match, the IRE tries the parent class's identification rule, such as the Application rule for Apache Web Server. It doesn't reclassify the CI, change reconciliation priority or relax mandatory fields.
63.When a CMDB administrator configures a Dictionary Override on the ′Serial Number′ attribute to make it mandatory for the ′Server′ class, what critical aspect of configuration is leveraged?
Answer
- It overrides the default behavior inherited from the parent ′cmdb_ci′ table for that specific child class and its extensions.
Fields such as Serial Number are defined on cmdb_ci and inherited by every class. A dictionary override changes the field's settings, such as making it mandatory, for Server and the classes that extend it, without affecting the rest of the CMDB.
64.Which component of the CI Class Manager hierarchy provides a convenient shortcut for frequently accessed classes, allowing administrators to quickly return to specific configurations without searching?
Answer
- Pinned Classes
Pinning a class in CI Class Manager adds it to Pinned Classes, a shortcut to classes you use often, so you can return to them without searching the hierarchy. The Hierarchy view shows the whole class tree, and the Basic Info and Identification Rule tabs configure a class.
65.Which statement correctly describes the purpose of the IRE Data Source Rule?
Answer
- It can be configured to block the insertion of new CIs from a specific data source.
An IRE data source rule controls what a data source may do for a class; for example, it can stop a source from inserting new CIs while still letting it update CIs that exist. Source priority comes from reconciliation rules, staleness from health or data refresh rules, and duplicates are grouped into de-duplication tasks.
66.What is the primary characteristic of an overloaded CI (Configuration Item), which occurs when an Identification Rule is poorly chosen (e.g., using only the Application Name)?
Answer
- Multiple instances of the same application running on a single host are incorrectly mapped to only one CI record.
An overloaded CI is one record that wrongly represents several things, typically several instances of an application on one host merged because the identification rule only uses the application name. Stale, orphaned and manually created CIs are different problems.
67.When modifying reconciliation rules or invalidating a discovery source, the Recompute option in the CI Class Manager allows administrators to recalculate CI attribute values. What is the maximum number of CI records that can be recomputed at once?
Answer
- 100000
Recompute recalculates CI attribute values after reconciliation rules change or a discovery source is invalidated, and it can process at most 100,000 CIs at a time. Choosing specific classes rather than high-level parents keeps the number of CIs down.
68.When comparing Static and Dynamic Reconciliation Rules, the IRE stores detailed historical information about which source last updated a specific attribute in which table?
Answer
- Data Source Histories [cmdb_datasource_last_update]
The Data Source Histories table, cmdb_datasource_last_update, records which data source last updated each attribute of a CI. The multisource data table keeps every source's reported values, and the audit table records changes rather than their source.
69.When a CMDB administrator configures an Identification Rule entry, what is the default behavior regarding optional filtering conditions?
Answer
- They can be applied to any lookup-type field by default.
By default, optional conditions on identifier entries can be used on lookup-type fields. Using them on other fields needs the glide.identification_engine.enable_identifier_optional_condition property set to true.
70.When configuring an Identifier Entry for a CI class in ServiceNow, what happens if you select the Allow fallback to parent’s rules checkbox and the current identifier fails to find a match?
Answer
- The IRE attempts matching using the criterion attributes of the parent class (e.g., falling back to the Application rule from the Apache Web Server rule).
With Allow fallback to parent's rules checked, if the identifier entry finds no match, the IRE tries the parent class's identification rule, such as the Application rule for Apache Web Server. The CI isn't reclassified, and reconciliation priorities aren't involved.
71.When configuring an Identification Rule entry, what is the impact of checking the Allow fallback to parent‘s rules option?
Answer
- If the current CI‘s identifier entry fails to find a match, the IRE attempts matching using the criterion attributes of the parent class.
Allow fallback to parent's rules means that if the identifier entry finds no match, the IRE tries matching with the parent class's criterion attributes. Null values are controlled by Allow null attributes, and reclassification and reconciliation are separate.
72.Which IRE configuration component must be set up to define that if a CI is not updated by the primary data source within a specified period (e.g., 7 days), a lower priority authorized data source is then allowed to update the CI attributes?
Answer
- Data Refresh Rule
A data refresh rule sets how often the higher-priority source is expected to update a CI. If it hasn't updated within that period, for example seven days, a lower-priority authorized source may update the attributes. Static rules set source priority, dynamic rules choose values by logic, and health inclusion rules scope health scores.
73.Which of the following describes the correct precedence order when determining the final accepted value for a CI attribute, assuming all types of rules are configured for that attribute?
Answer
- Dynamic Reconciliation Rule takes precedence over Static Reconciliation Rule.
When an attribute has both a dynamic and a static reconciliation rule, the dynamic rule takes precedence: the IRE applies its logic to the multisource data, and uses the static priorities only for attributes with no dynamic rule.
74.Which of the following system properties must be set to true to extend the functionality of applying optional filtering conditions to non-lookup type fields when configuring CI Identification Rule entries?
Answer
- glide.identification_engine.enable_identifier_optional_condition
Setting glide.identification_engine.enable_identifier_optional_condition to true extends optional conditions to non-lookup fields on identifier entries, adding an Advanced Options section where conditions narrow the records searched for a match.
75.Which of the following describes the key benefit of leveraging Dynamic Reconciliation Rules over Static Reconciliation Rules?
Answer
- Dynamic rules leverage raw data stored in the Multisource CMDB to determine the best value based on criteria like Largest Value or Most Reported.
Dynamic reconciliation rules use the values every source has reported in Multisource CMDB to choose the best one, for example the largest or the most reported. Relying only on source priority is what static rules do, and dynamic rules aren't limited to particular attributes or configured through transform scripts.
76.Which IRE configuration component allows a CMDB administrator to use business logic (e.g., selecting the largest or most frequently reported value) across multiple discovery sources to determine the final accepted attribute value, overriding any existing static reconciliation priority rules?
Answer
- Dynamic Reconciliation Rule
A dynamic reconciliation rule applies logic such as Largest Value or Most Reported across the values from every source, and it takes precedence over static priorities. Static rules rank sources, data refresh rules handle stale data, and IRE data source rules control what a source may insert.
77.In the CI Class Manager‘s Attributes tab, which filter displays only those attributes that have been explicitly added to the selected class (i.e., custom attributes) and not inherited from any parent class?
Answer
- Added filter
The Added filter on the Attributes tab shows only attributes defined directly on the class, such as custom u_ fields. Derived shows inherited attributes, and All shows both.
78.What is the primary benefit of the Preview Data option found under the Reconciliation Rules tab in the CI Class Manager?
Answer
- It allows the administrator to verify how static and dynamic reconciliation rules affect the individual CI attribute values before the rules are applied to the CMDB.
Preview Data on the Reconciliation Rules tab shows, using the multisource data, which value each attribute would get under the static and dynamic rules you've set, so you can check them before they're applied. It needs Multisource CMDB, and the 100,000 limit belongs to Recompute.
79.Reconciliation rules are configured to control which of the following?
Answer
- Updates to a CI
Reconciliation rules control which data sources may update which attributes of an existing CI. Inserting new CIs is controlled by IRE data source rules, deletion by lifecycle processes, and reading by access controls.
80.Where do you configure an icon for a specific class?
Answer
- Basic Info tab
A class's icon is set on the Basic Info tab in CI Class Manager, along with details such as its display name. The Identification Rule and Reconciliation Rules tabs configure the IRE, and Pinned Classes is a navigation shortcut.
81.Which dynamic reconciliation rule types only apply to numeric field types?
Answers
- Largest Value
- Smallest Value
Largest Value and Smallest Value compare values, so they only work on numeric fields. Most Reported, Last Reported and First Reported work with any field type.
82.The Server class has a dynamic reconciliation rule of largest value for the RAM field. The Windows Server class has a dynamic reconciliation rule of most reported for the RAM field. Given the following data in the Multisource CMDB, which value would be added to the CMDB for RAM for a Windows Server record? Tivoli RAM: 4096 ServiceNow RAM: 4096 LANDesk RAM: 2048 Altiris RAM: 6020
Answer
- 4096
A rule on the child class overrides the one on its parent, so a Windows Server uses its own Most Reported rule. Two sources report 4096, more than any other value, so 4096 is kept.
83.The Server class is extended from the Computer class. Which is the parent class between the two classes?
Answer
- Computer
A class that extends another is its child, so Server, which extends Computer, is the child, and Computer is the parent.
84.The Server class has a dynamic reconciliation rule of largest value for the RAM field. The Windows Server class has a dynamic reconciliation rule of most reported for the RAM field. Given the following data in the Multisource CMDB: Tivoli RAM: 4096 ServiceNow RAM: 4096 LANDesk RAM: 2048 Altiris RAM: 6020 Which value would be added to the CMDB for RAM for a Server record?
Answer
- 6020
A Server record uses the Server class's own rule, Largest Value. The largest value reported is Altiris's 6020, so that's kept.
85.Which of the following can be configured to prevent inserts into the CMDB from an unwanted data source?
Answer
- IRE Data Source Rule
An IRE data source rule can stop a data source from inserting new CIs into a class. Reconciliation rules govern updates, data refresh rules govern stale data, and identification rules match CIs.
86.Where do you go to configure a rule to uniquely identifies CIs?
Answer
- Identification Rule tab
Identification rules, which define how CIs are uniquely identified, are configured on the Identification Rule tab in CI Class Manager.
87.You have configured Reconciliation Rules for the Windows Server [cmdb_ci_win_server] class to control which data sources are trusted to update the CI attributes. The Rules Configuration: Existing Data: There is an existing CI in the CMDB: CI Name: WIN-HR-01 Operating System: Windows Server 2016 Standard Most Recent Discovery Source: ServiceNow Discovery (Last updated 2 days ago) The Event: The SG-SCCM (Service Graph Connector for SCCM) scheduled import runs today. It identifies the same CI (WIN-HR-01) successfully and attempts to update the record with the following payload: Operating System: Windows Server 2019 Datacenter RAM: 32 GB (The existing RAM in CMDB is null/empty) Question: How does the Identification and Reconciliation Engine (IRE) handle this update request from SG-SCCM?
Answer
- It blocks the update for the Operating System (skips it) but allows the update for RAM because the existing RAM value was empty.
SCCM has a lower priority than Discovery, which last set the operating system, so the IRE skips SCCM's operating system value. RAM is empty, with no higher-priority source owning it, so SCCM is allowed to fill it in. The rest of the payload isn't blocked, and no task is created.
88.Cloud Dimensions recently integrated a new monitoring tool (SolarWinds) and wants it to supply the Memory (RAM) value for all virtual servers. However, this value must be prevented from being updated by the standard vCenter Discovery source, even though vCenter runs later. The administrator needs to configure this specific data source prioritization for a single attribute within the Virtual Server CI class. Which feature handles this data source control?
Answer
- CI Class Manager Reconciliation Rules.
A reconciliation rule in CI Class Manager can give SolarWinds priority for the RAM attribute on the Virtual Server class, so vCenter can't overwrite it even when it runs later. Data Manager, Query Builder and the Duplicate CI Remediator don't control which source updates an attribute.
89.Which ones are good Identification Rules ? (Select 5)
Answers
- Using MAC/Name pair to identify a server
- Using Installation Directory Path to identify an application
- Using Configuration File Path to identify an application
- Using Serial Number to identify a server
- Using IP address to identify a server
Serial number, a MAC and name pair, and IP address are offered here as server identifiers, and an application's installation directory path or configuration file path tells its instances apart. A directory name alone isn't unique, since instances installed in different paths can share it.
90.Where do you configure data sources authorized to update CI Attributes?
Answer
- Reconciliation Rules tab
The data sources allowed to update a class's attributes, and their priorities, are configured on the Reconciliation Rules tab in CI Class Manager.
91.Which of the following are true with respect to the Multisource CMDB? (Choose 2)
Answers
- Must be activated on base systems
- Activate the Multisource CMDB by setting the property, glide.identification_engine.multisource_enabled, to true and installing the ITOM Discovery License plugin
Multisource CMDB isn't on by default; you activate it by setting glide.identification_engine.multisource_enabled to true and installing the ITOM Discovery License plugin. The CMDB CI Class Models plugin has nothing to do with it.
92.What feature allows for easy navigation back to a frequently accessed class?
Answer
- Pinned Classes
Pinned Classes in CI Class Manager are shortcuts to classes you open often.
93.Which reconciliation rule type takes precedence when both a dynamic and a static rule are defined for the same CI attribute?
Answer
- Dynamic Reconciliation Rule
When both a dynamic and a static rule apply to the same attribute, the dynamic rule takes precedence.
94.A CMDB Administrator is using the CI Class Manager to analyze the data structure of the “Windows Server” class. The administrator needs to identify which attributes are passed down from the parent classes (such as Server , Computer , and Hardware ) rather than being defined explicitly on the Windows Server table itself. Which filter in the Attributes tab must be selected to display only these inherited attributes?
Answer
- Derived
The Derived filter on the Attributes tab shows only the attributes a class inherits from its parent classes, such as Server, Computer and Hardware. Added shows those defined on the class itself.
95.A CMDB Administrator is using the CI Class Manager to configure reconciliation rules for the Windows Server class. Which feature allows the administrator to view the priority order of data sources for individual CI attributes, verifying how static and dynamic rules interact before the rules are applied to the CMDB?
Answer
- Preview Data
Preview Data on the Reconciliation Rules tab shows the order in which sources take priority for each attribute once static and dynamic rules are combined, before the rules are applied. Recompute reapplies rules to existing CIs, and the analytics job fills in the CMDB 360 view.
96.The following Reconciliation Rules were configured for ServiceNow, Altiris, and SCCM for the Windows Server ( cmdb_ci_win_server ) class: ServiceNow: Priority 100 Altiris: Priority 200 SCCM: Priority 300 Which statements are true? (Choose two options)
Answers
- Data collected with a discovery source of Altiris can update records inserted by SCCM into the Windows Server table.
- Data collected with a discovery source of SCCM can be inserted as new records in the Windows Server table.
A lower priority number wins, so ServiceNow (100) outranks Altiris (200), which outranks SCCM (300). Altiris can therefore update records SCCM inserted, and any authorized source, including SCCM, can insert new records. ServiceNow can update records from both other sources, and SCCM's higher number means lower priority.
97.A CMDB Administrator needs to create a new CI class for the Internet of Things (IoT) Sensor in ServiceNow. What are the recommended practices for this specific activity? (Choose 2)
Answers
- Install or update the CMDB CI Class Models store application, and verify the class does not already exist
- Add a new class under an appropriate parent class
Install or update the CMDB CI Class Models store app to check whether an IoT sensor class already exists, and if not, add the new class under the most appropriate parent class. Repurposing or deleting existing classes creates technical debt.
98.A Configuration Management Process Owner is preparing solution options for presentation to technical governance for ingesting custom CIs into the CMDB. The solution must align with best practices, minimize future technical debt, and ensure upgrade compliance. Which solutions accomplish this? (Choose 2)
Answers
- Installing or upgrading the CMDB CI Class Models Store application to find a suitable existing CI class accommodating any new attributes
- Extending an existing CI class table to accommodate the custom CI class attributes
Check the CMDB CI Class Models store app for a suitable existing class first, and if new attributes are still needed, extend an existing CI class. Repurposing a base class or extending the Asset table creates technical debt and upgrade problems.
99.A Configuration Manager has configured multiple data sources that are all authorized to update the same class and the same set of class attributes in the CMDB. What can the Configuration Manager do to control which data source should be the authoritative source of truth for a specific class or set of class attributes?
Answer
- Assign a priority to each data source in reconciliation rules
Reconciliation rules give each data source a priority for a class or a set of attributes, which makes the highest-priority source the authoritative one. Data refresh rules only cover stale data, and identification rules don't rank sources.
100.A new custom class is needed to reflect a new application being managed in the CMDB. Which roles are minimally needed to add this custom CI class?
Answer
- sn_cmdb_admin and personalize_dictionary
Creating a CI class needs sn_cmdb_admin, to use CI Class Manager, and personalize_dictionary, to create the table and its fields.
101.A global enterprise integrates data from multiple discovery sources such as ServiceNow Discovery, SCCM, AWS, and manual uploads to populate its CMDB. However, each discovery source categorizes the same CIs differently, leading to duplicate records and inconsistencies across the system. As a result, the CMDB team is struggling with data accuracy and standardization. What actions does the CMDB team take to resolve the issue?(Choose 2)
Answers
- Implement and use identification and reconciliation rules to avoid duplicates and standardize CI classification
- Use CI Class Manager to establish standardized CI classes and attributes across all discovery sources
Identification and reconciliation rules make every source identify CIs the same way and decide which source wins, and CI Class Manager defines standard classes and attributes for all sources to use. Custom scripts and source-specific classes would only add inconsistency.
102.A CMDB Administrator is working in the CI Class Manager on the Basic Info tab. How can the class be set as a Principal Class?
Answer
- Check the Principal Class check box
On the Basic Info tab in CI Class Manager, select the Principal Class check box.
103.A CMDB Administrator needs to configure a new application identification rule that considers the potential for the same application installed more than once on the same server. Which is the best choice of a criterion attribute?
Answer
- Configuration File Path
Two installations of the same application on one server must have different configuration file paths, so the path tells them apart. File name, port, version and class can all repeat between instances.
104.A Configuration Management team needs to prevent duplicate server records to avoid confusion among users. Server records are identified when they are processed via the Identification and Reconciliation Engine (IRE) using the configured identification rules. Where would these rules be configured?
Answer
- CMDB CI Class Manager
Identification rules are configured per class in CMDB CI Class Manager.
105.A CMDB Administrator needs to set a CI Class as a Principal Class. Which CI Class Manager tab would need to be accessed?
Answer
- Class Info > Basic Info
Principal Class is set on the Basic Info tab under Class Info in CI Class Manager.
106.The Server [cmdb_ci_server] class uses a dynamic reconciliation rule of lowest value for the Disk Space (GB) field, while the Windows Server [cmdb_ci_win_server] class uses a dynamic reconciliation rule of most reported for the Disk Space (GB) field. Given the following data sources that populate Windows Server data into the CMDB 360/Multisource CMDB: Tivoli — 75 GB ServiceNow — 75 GB LANDesk — 50 GB Altiris — 80 GB Which value would be added to the CMDB for the Disk Space (GB) field of a Windows Server [cmdb_ci_win_server] record?
Answer
- 75
The Windows Server class's own Most Reported rule overrides the Server class's rule. Two sources report 75 GB, more than any other value, so 75 is kept.
107.An organization utilizes multiple data sources to update its CMDB, each assigned a different priority level. A high-priority data source is scheduled to update server records weekly. However, due to an integration issue, the high-priority data source stops updating the records. Which configuration can be used to allow a lower-priority data source to update records after a specified period of inactivity from the higher-priority source?
Answer
- Data Refresh Rules
A data refresh rule lets a lower-priority source update a CI if the higher-priority source hasn't updated it within a set period, so the data keeps flowing when the main source stops.
108.A CMDB CI Class Owner responsible for the Windows Servers needs to manage the Windows Server class. Which CI Class Manager feature will help the CI Class Owner streamline this task?
Answer
- Pinned Classes
Pinning the Windows Server class in CI Class Manager gives quick access to it from Pinned Classes.
109.A CMDB Administrator wants to ensure that only relevant CIs from managed classes will be shown on Incident, Problem, and Change records. Which checkbox needs to be checked in the CI Class Manager for the CMDB Administrator to achieve the requested result?
Answer
- Principal Class
Checking Principal Class in CI Class Manager limits the Configuration item field on incidents, problems and changes to CIs from those classes.
110.A Configuration Management team has decided to start taking advantage of the CMDB 360/Multisource CMDB functionality. Which system property must be enabled?
Answer
- glide.identification_engine.multisource_enabled
CMDB 360, or Multisource CMDB, is turned on with the glide.identification_engine.multisource_enabled property.
111.A Configuration Manager needs to restrict the number of classes available in a Configuration Item reference field on an incident form. How does the Manager set Principal Classes?
Answer
- By using the Principal Class check box on the CI Class Manager's 'Basic Info' tab for a Class
Principal Classes are set with the Principal Class check box on a class's Basic Info tab in CI Class Manager.
112.A Configuration Manager is managing a CI class in the CMDB. The identification rule(s) needs an update. Where can the Configuration Manager view and configure the existing identification rule(s) for the class?(Choose 2)
Answers
- CI Identifiers module
- CI Class Manager
A class's identification rules can be viewed and changed in CI Class Manager and in the CI Identifiers module.
113.The following Reconciliation Rules were configured for ServiceNow, Altiris, and SCCM: Discovery SourceClass Priority ServiceNow Windows Server[cmdb_ci_win_server] 100 AltirisWindows Server[cmdb_ci_win_server] 200 SCCMWindows Server[cmdb_ci_win_server]300 Which are true?(Choose 2)
Answers
- Data collected with a discovery source of ServiceNow can insert new records into the Windows Server [cmdb_ci_win_server] table, but cannot update records created by Altiris or SCCM.
- Data collected with a discovery source of SCCM can be inserted as new records in Windows Server [cmdb_ci_win_sever] table
A lower priority number wins: ServiceNow (100) outranks Altiris (200), which outranks SCCM (300). Any authorized source can insert new records, so SCCM can insert even though its priority is the lowest.
114.A CMDB CI Class Owner has been asked to change the icon for the UNIX Server class. Which CI Class Manager tab can the owner use to change the icon for the class?
Answer
- Basic Info
A class's icon is changed on the Basic Info tab in CI Class Manager.
115.A CMDB Administrator wants to leverage dynamic reconciliation rules. Which feature must be enabled?
Answer
- CMDB 360/Multisource CMDB
Dynamic reconciliation rules need CMDB 360, or Multisource CMDB, to be enabled.
116.An organization is updating the CMDB to include new asset types like IoT devices. Relevant CI classes need to be added and outdated ones need to be removed from the Principal Class filter to ensure accurate display in ITSM processes. Which roles are needed to add or remove classes?(Choose 2)
Answers
- sn_cmdb_admin
- personalize_dictionary
Adding or removing classes from the Principal Class filter needs sn_cmdb_admin, to use CI Class Manager, and personalize_dictionary, to change the class definition.
117.Using CI Class Manager, the Tomcat identification rule has the following criterion attributes configured: Class Install Directory Which identifier entry configuration option must be checked to attempt a match using the Application identification rule if no match is found using the Tomcat identification rule?
Answer
- Allow fallback to parent's rules
With Allow fallback to parent's rules checked, if the Tomcat rule finds no match, the IRE tries the parent Application class's rule.
118.A CMDB Administrator needs to identify which attributes have been created specifically for the Windows Server class. Which tab in the Attributes section is used?
Answer
- Added
The Added filter on the Attributes tab shows attributes created on the class itself. Derived shows inherited ones, and All shows both.
119.A CMDB Administrator wants only the CIs of Principal Classes to appear in CI reference fields, for example the CI reference fields accessible from an Incident Form. Where does the CMDB Administrator designate Principal Classes?
Answer
- CI Class Manager
Principal classes are designated in CI Class Manager, on each class's Basic Info tab.
120.A CMDB Administrator is tasked with managing the CMDB and needs to define a new CI class to track a new type of equipment that has not been seen before. Which action adds a new CI class and ensures it integrates properly with the existing CMDB structure?
Answer
- Create a new CI class directly in the CI Class Manager and configure the table inheritance to ensure it inherits from a relevant parent class.
Create the class in CI Class Manager as a child of the most relevant parent class, so it inherits that class's attributes, identification rules and place in the hierarchy.
121.A ServiceNow Administrator needs to create multiple new classes in the CMDB but wants to follow ServiceNow’s best practices for naming CMDB tables to prevent technical debt. Which is the starting prefix for all custom CMDB tables?
Answer
- u_cmdb_ci
Custom CMDB tables start with u_cmdb_ci, marking them as user-defined CI classes.
122.A CMDB Administrator wants to configure IRE rules for the CMDB. The CMDB Administrator opens CI Class Manager and sees the Health Inclusions Rules tab available under a CI Class. How are these rules utilized by the IRE?
Answer
- To narrow the scope of CIs included in the identification process
Inclusion rules narrow the set of CIs that a process considers, so only the relevant CIs are included.
123.A CMDB Administrator is creating technical documentation for stakeholders, which includes a list of attributes, Identification and Reconciliation Engine (IRE) rules, and suggested relationships for several classes. Which central location does the CMDB Administrator use to collect this information?
Answer
- CI Class Manager
CI Class Manager brings together each class's attributes, identification and reconciliation rules and suggested relationships, so it's the place to collect this documentation.
124.A Configuration Manager has configured multiple data sources which are all authorized to update the same class and the same set of class attributes in the CMDB. What can the Configuration Manager do to control which data source should be the authoritative source of truth for a specific class or set of class attributes?
Answer
- Assign a priority to each data source in the reconciliation rules
Reconciliation rules give each data source a priority for a class or a set of attributes, which makes the highest-priority source authoritative. Data refresh rules only cover stale data, and identification rules don't rank sources.
125.The CMDB Administrator has set up two Dynamic Reconciliation Rules within the ServiceNow Production Instance. The Server class has a Dynamic Reconciliation Rule of largest value for the RAM field. The Windows Server class has a Dynamic Reconciliation Rule of most reported for the RAM field. Discovery Source RAM (MB): Tivoli → 4,096 ServiceNow → 4,096 LANDesk → 2,048 Altiris → 8,192 Given the above data in the Multisource CMDB, which value would be added to the CMDB for RAM for a Server CI?
Answer
- 8.192 MB
A Server CI uses the Server class's Largest Value rule, so the largest value reported, Altiris's 8,192 MB, is kept.
126.A Platform Data Owner wants to improve data quality with a few reconciliation rules across the five discovery sources that are being used. The Data Owner knows the best option is to include CMDB 360/Multisource CMDB to manage and monitor discovery sources, but the company currently does not have a license for ITOM Discovery that is required for CMDB 360/Multisource CMDB. What can the Data Owner do in this case?
Answer
- The IRE reconciliation rules can use discovery sources regardless of CMDB 360 being enabled.
Static reconciliation rules work with discovery sources whether or not CMDB 360 is enabled, so the Data Owner can set up source priorities now. CMDB 360 is only needed for dynamic rules and multisource analysis.
127.A Configuration Management Process Owner is preparing solution options for presentation to the technical governance board for ingesting custom Cis to the CMDB. The solution needs to align with best practice, minimize the cost of future work (technical debt) and ensure compliance with future upgrades. Which solutions accomplish this? (Choose 2)
Answers
- Extending an existing CI class table to accommodate the custom CI class attributes
- Installing or upgrading the 'CMDB CI Class Models' store application to find a suitable existing CI class accommodating any new attributes
Check the CMDB CI Class Models store app for a suitable existing class first, and if new attributes are still needed, extend an existing CI class. Repurposing a base class or extending an Asset table creates technical debt.
128.With CMDB 360/Multisource CMDB the Dynamic Reconciliation Rules will also be enabled. Based on the request of the management, a CMDB. Administrator has to set up multiple Dynamic Reconciliation Rules. Which are available ‘Dynamic Rule Types’ within the ‘Create Reconciliation Rule’ wizard? (Choose 2)
Answers
- Most Reported
- Smallest Value
Most Reported and Smallest Value are dynamic rule types, along with types such as Last Reported and Largest Value. Last Created and Last Updated aren't.