SERVICENOW-CIS-DISCOVERY Practice Test 1 — 25 Questions

Question 1

When a pattern step uses a 'Query' to the target, what is the 'Temporary Variable' used for?

Accepted Answer

To store the output of the step for use in subsequent steps.. A temporary variable is used to store the output of a pattern step so that subsequent steps can access and parse that data.

Answer

To act as a filter for the result set.

Answer

To increase the speed of the scan.

Answer

To define the credentials for the query.

Question 2

Which of the following is a common symptom of a 'stale' CI?

Accepted Answer

The CI has not been updated by discovery within the expected timeframe.. A stale CI is one that hasn't been updated recently, suggesting it might be retired or the discovery scan is failing.

Answer

The CI has a duplicate.

Answer

The CI has too many relationships.

Answer

The CI is missing required attributes.

Question 3

Which THREE actions should you take when troubleshooting a discovery process that is failing to populate the 'Serial Number' field for a specific class of routers?

Accepted Answer

Review the Identification Rule for the router class. Troubleshooting involves verifying the pattern execution, the identification rule logic, and the reconciliation rule settings.

Answer

Increase the Discovery timeout value

Answer

Modify the MID Server cluster configuration

Question 4

When configuring Data Sources for CMDB reconciliation, which TWO of the following are true regarding the behavior of the Identification and Reconciliation Engine (IRE)?

Accepted Answer

Data source importance determines which source takes precedence during a reconciliation conflict.. The IRE uses source priority and data source configuration to manage conflicting attribute data.

Answer

Custom data sources require a new Identification Rule for every CI class.

Answer

IRE ignores data sources that are not explicitly defined in the Identification Rules.

Answer

Discovery always has higher priority than manual CMDB updates by default.

Question 5

Where can you see the 'Discovery Log' for a specific device that was scanned?

Accepted Answer

In the Discovery Status record.. The Discovery Status record contains a related list for 'Discovery Log' which shows all messages for that scan run.

Answer

In the CMDB CI record.

Answer

In the MID Server dashboard.

Answer

In the System Log.

Question 6

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?

Accepted Answer

cmdb_identifier_entry. The cmdb_identifier_entry table defines the attributes used to uniquely identify a CI, which prevents duplicates.

Answer

discovery_device_history

Answer

sys_reconciliation_rule

Answer

cmdb_ci_relation

Question 7

Which 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?

Accepted Answer

CI Identification and Reconciliation (IRE) logs. The 'CMDB Workspace' or 'CI Identification and Reconciliation' logs allow you to see the payload sent to the IRE.

Answer

System Logs

Answer

Discovery Pattern Designer

Answer

Discovery Home Page

Question 8

Which action should you perform before modifying a default Discovery Pattern?

Accepted Answer

Create a copy of the pattern.. To avoid losing changes during upgrades, you must make a copy of the pattern before modification.

Answer

Export the pattern to an XML file.

Answer

Reboot the MID server.

Answer

Delete the original pattern.

Question 9

Which THREE of the following are components or features that are part of the 'Discovery' to 'CMDB' data pipeline?

Accepted Answer

Discovery Patterns. The pipeline includes data collection (Discovery), processing (IRE), and governance (Reconciliation).

Answer

Incident Management

Answer

Knowledge Management

Question 10

A customer requires that a specific Discovery Schedule only executes during maintenance windows on weekends. Which configuration setting should be modified?

Accepted Answer

Adjust the 'Run' field to 'Periodically' and select a custom Schedule record.. The Schedule field on the Discovery Schedule record defines the execution frequency using standard system schedules.

Answer

Change the discovery pattern logic.

Answer

Update the Discovery Behavior record.

Answer

Modify the MID Server cluster affinity.

Question 11

You notice that Discovery is creating duplicate CIs for Windows servers. Which CMDB feature should you investigate first to ensure Discovery correctly identifies existing CIs?

Accepted Answer

Identification Rules. The Identification and Reconciliation Engine (IRE) uses identification rules to prevent duplicates by matching incoming data against existing CIs based on defined criteria.

Answer

Discovery Schedules

Answer

Transform Maps

Answer

Data Preserver

Question 12

What is the role of the 'ECC Queue' in Discovery?

Accepted Answer

To act as a message queue for commands and results between instance and MID Server.. The ECC Queue is the communication buffer between the ServiceNow instance and the MID Server.

Answer

To schedule Discovery scans.

Answer

To store the final CMDB data.

Answer

To provide credentials for discovery.

Question 13

You have a custom CI class that is not appearing in the CMDB Health Dashboard reports. What is the first step to ensure it is included?

Accepted Answer

Add the class to the CMDB Health Dashboard 'Dashboard Configuration' settings.. CMDB Health settings must be configured to include specific classes for health metrics calculation.

Answer

Create an ACL for the CMDB Health table.

Answer

Restart the Discovery services.

Answer

Run a full Discovery of the entire environment.

Question 14

During a Discovery run, a Linux server CI is updated with a null value for its serial number, overwriting a manually entered value. Which configuration prevents this?

Accepted Answer

Reconciliation Rules. Discovery Source and reconciliation rules define which data sources are allowed to update specific attributes, preventing lower-priority sources from overwriting authoritative ones.

Answer

CMDB Health Dashboard

Answer

Discovery Pattern Pre/Post scripts

Answer

MID Server Capabilities

Question 15

When reviewing the CMDB Health Dashboard, you notice a high 'Staleness' score for several Windows servers. What is the primary cause of high staleness?

Accepted Answer

The CIs have not been updated by Discovery within the configured staleness threshold.. Staleness is calculated based on the 'sys_updated_on' field compared to the threshold defined in the CMDB Health properties.

Answer

The CIs are not being reconciled correctly.

Answer

The Discovery credentials failed during the last scan.

Answer

The CIs have invalid relationship types.

Question 16

During 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?

Accepted Answer

System Logs > Identification and Reconciliation Engine Logs. The IRE logs all interactions between Discovery and the CMDB, including validation failures and attribute update denials.

Answer

System Logs > Node Logs

Answer

Discovery > Pattern Logs

Answer

System Logs > Discovery Logs

Question 17

Which of these is a valid way to organize discovery when dealing with a very large network?

Accepted Answer

Use multiple schedules and MID servers to segment the workload.. Using multiple discovery schedules and assigning them to different MID servers is the standard architectural approach.

Answer

Disable the identification phase.

Answer

Use a single schedule for everything.

Answer

Run everything at once.

Question 18

A Discovery Schedule is configured but not running. Where is the first place you should look for errors?

Accepted Answer

Discovery Log. The Discovery Log and the ECC Queue are the primary sources for troubleshooting discovery issues.

Answer

System Logs

Answer

MID Server Logs

Answer

CMDB Health Dashboard

Question 19

During the Classification phase, Discovery identifies a device as a Linux server but fails to populate the serial number. Which troubleshooting step is most effective?

Accepted Answer

Check the ECC Queue for 'Input' records related to the SNMP probes and review the pattern logs.. If classification succeeds but specific data is missing, the issue is typically in the Exploration phase probes or identifiers.

Answer

Change the MID Server user to an admin account.

Answer

Delete the Discovery Schedule and recreate it.

Answer

Re-run the Shazzam probe for that specific IP.

Question 20

You are implementing a new discovery tool and want to ensure it integrates seamlessly with existing CMDB identification rules. What is the first step?

Accepted Answer

Review existing Identification Rules to ensure they support the new tool's incoming CI data.. You must check existing Identification Rules to see if the new tool's data can be mapped using existing identifiers.

Answer

Delete all existing CIs.

Answer

Disable all existing identification rules.

Answer

Use a new CI class for all data from the new tool.