Be able to trace a CI from discovery to CMDB: verify IRE identifiers when duplicates appear, clone patterns before editing, recognize stale CIs, and configure data source precedence so imports do not overwrite Discovery. Getting identification and reconciliation right is the single most important skill.
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Domain overview
This domain covers how Discovery data lands in the CMDB and stays trustworthy: CI identification and reconciliation, stale CI symptoms, pattern change control, and protecting discovered attributes from external imports. Questions are scenario-based, asking you to pick the correct component, setting, or sequence of actions rather than recite definitions.
Exam objectives
CI Identification and Reconciliation Engine (IRE) rules and criteria
Discovery Patterns, their versioning, and pre-modification cloning practices
Stale CI indicators such as outdated last discovered timestamps
CMDB Data Manager and reconciliation precedence over imported asset data
Editing a default Discovery Pattern in place instead of copying it, which breaks upgrades and loses vendor-supported behavior.
Assuming duplicate CIs come from the pattern when the Identification Engine entry or identifier attributes are misconfigured.
Letting external asset imports overwrite Discovery-sourced attributes by ignoring data source precedence and reconciliation rules.
Click any question to see the full explanation and answer options, or start a focused practice session above.
You are troubleshooting a scenario where Discovery is creating duplicate CIs for the same server. Which table should you inspect to verify the Identification Rule settings for the specific CI class?
2During a Discovery run, a Linux server is identified, but the CMDB record is not updated with the latest memory information. Which log should be inspected to troubleshoot the Identification and Reconciliation engine (IRE) process?
3A Discovery scan successfully identifies a Linux server, but the 'Operating System' field is not being updated in the CMDB. You have verified that the pattern correctly extracts the OS version. What is the most likely configuration issue?
4You notice that Discovery is creating duplicate CIs for Windows servers. Which CMDB feature should you investigate first to ensure Discovery correctly identifies existing CIs?
5When reviewing the CMDB Health Dashboard, you notice a high 'Staleness' score for several Windows servers. What is the primary cause of high staleness?
6Which tool provides a visual representation of how different data sources are contributing to the current state of a CI record?
7When using the Identification and Reconciliation Engine (IRE), what happens if a payload contains a CI that matches multiple existing CIs based on the identification rule?
8What is the consequence of having an incorrect 'Identification Rule' for a hardware CI class?
9An administrator wants to ensure that data imported from an external asset system does not overwrite data collected by Discovery. How should this be configured?
10A pattern is failing to map a specific attribute because the command used returns multi-line output. What is the standard way to handle this in a Discovery Pattern?
11What is the purpose of a 'Discovery Source' in the CMDB?
12Which action should you perform before modifying a default Discovery Pattern?
13You are migrating from legacy horizontal discovery to Service Mapping. How should you handle the transition of existing CMDB CI relationships?
14Which module allows you to visualize the dependencies and connections between CIs in a map view?
15When a CI record is 'Orphaned' according to the CMDB Health Dashboard, what does this mean?
16What is the primary role of the Identification and Reconciliation Engine (IRE) in the Discovery process?
17Which of the following best describes the purpose of 'CMDB Data Manager'?
18What is the purpose of the 'discovery_id' in a discovery log?
19When a discovery pattern finishes, it creates an 'Identification' payload. Where is this payload processed?
20What is the primary function of the 'CI Class Manager'?
21You are creating a custom CI class. Which step is essential to ensure that Discovery can identify CIs of this new class?
22If Discovery cannot find a pattern for an OS version, what does the system typically do?
23Which component is responsible for orchestrating the flow of CI data from the discovery source to the CMDB, ensuring data quality?
24Which of the following best describes how the CMDB Health Dashboard defines 'Duplicate' CIs?
25When a pattern step uses a 'Query' to the target, what is the 'Temporary Variable' used for?
26Where can you see the 'Discovery Log' for a specific device that was scanned?
27If you need to change the priority of a data source for a CI attribute, where do you go?
28A business service has become 'inaccurate' in Service Mapping. What is the standard troubleshooting step?
29Which TWO of the following factors contribute to the CMDB Health Dashboard's 'Completeness' score?
30Which TWO of the following are common issues that cause the Identification and Reconciliation Engine (IRE) to generate an error?
31Which TWO of the following are potential side effects of an improperly configured Reconciliation Rule?
32Which TWO of the following actions help reduce 'Staleness' in the CMDB?
33Which THREE of the following are components or features that are part of the 'Discovery' to 'CMDB' data pipeline?
34What is the primary function of an 'Identification Rule'?
35Which of the following is the most effective way to view the relationships of a CI in a graphical format?
36When a Discovery pattern step fails due to a timeout, what is the best approach to fix it?
37What is the primary benefit of using the CMDB Health Dashboard?
38Which of the following is a common symptom of a 'stale' CI?
39Which of the following is true regarding the relationship between Discovery and the CMDB?
40In the context of the CMDB, what does 'Orphan' refer to?
41You are implementing a new discovery tool and want to ensure it integrates seamlessly with existing CMDB identification rules. What is the first step?
42What happens in the CMDB when a 'Reconciliation Rule' identifies a conflict between two data sources?
43If you need to define a new CI attribute that should be populated by Discovery, which task is mandatory?
44Which of the following describes the purpose of the 'CI Class Manager'?
45You are configuring a Discovery CI identification rule for Linux servers and notice that multiple CIs are being created for the same physical device. Which component should you verify to ensure the Identification Engine correctly links the incoming data to an existing CI?
46A technician reports that Discovery is updating the 'Last discovered' field, but the 'Operational status' is not changing as expected. Where should you investigate the mapping of Discovery data to the CMDB?
47A Discovery run is successfully finding CIs, but the 'CMDB Health Dashboard' shows 'Staleness' errors. What is the primary cause of staleness in the CMDB?
48Which ServiceNow feature allows you to visualize the flow of data from Discovery into the CMDB, helping to debug why a CI attribute was populated with a specific value?
49You want to exclude specific network devices from being created in the CMDB by Discovery. How do you implement this?
50After an upgrade, several CIs are showing as 'Orphaned'. What does this status imply in the context of CMDB Health?
51Where can you find a summary of the total number of CIs discovered versus those updated, identifying potential efficiency issues in your Discovery infrastructure?
52Which THREE types of metrics are tracked by the CMDB Health Dashboard?
53Which of the following is the most effective way to monitor the health of your discovery process on a daily basis?
54When the Identification and Reconciliation Engine (IRE) processes a payload, which THREE components determine if a CI is updated or created?
55During a Discovery run in a large data center, the same Windows server is being discovered by two separate MID Servers that both have network access to the server's subnet. The server appears as a single CI, but its 'Last discovered' timestamp and certain network adapter attributes keep flipping between values from each MID Server on every run. Which configuration should you review first to understand and control this behavior?
56A CMDB administrator notices that a Linux server CI created by Discovery has a serial number attribute populated by a third-party import, while Discovery populates the same attribute with a different value. The administrator wants Discovery's value to take precedence over the import when both sources update the CI. Which mechanism should be configured to control this precedence?
57During a CMDB health check, an administrator notices that a Windows server CI has a stale record in the CMDB even though the server was decommissioned three months ago. The administrator wants to ensure that decommissioned CIs are automatically marked as retired. Which CMDB feature should be configured to achieve this?
58A ServiceNow administrator is configuring a CI identification rule for a custom CI class 'Network Router'. The class has a unique attribute 'serial_number' and a non-unique attribute 'model'. The administrator wants to ensure that if a router with the same serial number already exists, Discovery updates that CI instead of creating a new one. Which identification rule configuration should be used?
59An administrator needs to review which CIs were recently modified by an integration and confirm the source of each change. Which CMDB capability provides a chronological record of attribute-level changes on a CI, including the data source that made the change?
60A CMDB administrator is troubleshooting why a Linux server CI keeps losing its correct 'CPU count' value after each nightly discovery run. The discovery source correctly reports 8 CPUs, but the stored value reverts to 2. Which configuration should be inspected first to explain the reversion?
61A CMDB manager must reduce duplicate server CIs that are being created because two discovery sources report slightly different values for the same hostname. Which TWO actions should be taken to improve matching and reduce duplicate creation? (Choose two.)
62You are a ServiceNow Discovery administrator for a large enterprise. You have configured Discovery to populate the CMDB with data from multiple sources, including ServiceNow Discovery, SCCM, and a third-party asset management system. You need to ensure that the CMDB is not polluted with duplicate CIs and that the most authoritative data source wins when there are conflicts. Which feature should you use to achieve this?
63During a Discovery run, a Windows server is discovered and its hostname matches an existing CI in the CMDB, but the serial number differs. The CI Class Manager shows that the class uses a CI Identification rule with 'Hostname' as the only identifier. What is the most likely outcome for this CI?
64A CMDB administrator notices that a business application CI's relationships to its supporting servers are correct, but the application's 'Environment' attribute is blank even though Discovery populates it on the servers. Which concept explains why the application CI lacks the value and what should be done?
65A CMDB administrator notices that a Linux server CI has multiple IP addresses, but only one is being discovered and stored in the 'ip_address' field. The Discovery pattern uses the 'nmap' command to scan the server. What is the most likely reason for this behavior?
66You are a ServiceNow Discovery administrator. After a recent discovery run, you notice that a Linux server CI has an incorrect operating system version attribute. You want to manually correct this value in the CMDB. Which module should you use to edit the CI record?
67You are a ServiceNow Discovery administrator. You have been asked to ensure that the CMDB remains accurate and up-to-date when CIs are retired or decommissioned. Which two actions should you perform to maintain CMDB integrity in this scenario? (Choose two.)
68You are a ServiceNow Discovery administrator. A discovery pattern for a network device is failing to populate the 'Firmware Version' attribute. You have confirmed that the SNMP OID for firmware version is correctly queried and returns a value. However, the attribute remains empty in the CMDB. What is the most likely reason for this issue?
69A CMDB administrator is investigating why a discovered printer CI is not showing any relationships to the network switch it is connected to, even though the switch was discovered. The Discovery pattern for printers includes steps to collect ARP tables and MAC addresses. What is the most likely reason for the missing relationship?
70A CMDB administrator is configuring CI identification for a new class of network devices. The administrator wants to ensure that duplicate CIs are minimized. Which two actions should the administrator take? (Choose two.)
Be able to trace a CI from discovery to CMDB: verify IRE identifiers when duplicates appear, clone patterns before editing, recognize stale CIs, and configure data source precedence so imports do not overwrite Discovery. Getting identification and reconciliation right is the single most important skill.
The Courseiva SERVICENOW-CIS-DISCOVERY question bank contains 70 questions in the CMDB Integration And Maintenance domain. Click any question to see the full explanation and answer breakdown.
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