SERVICENOW-CIS-DISCOVERY Practice Exam 2 — 20 Questions

Question 1

What is the purpose of the 'Shazzam' phase in the Discovery process?

Accepted Answer

To determine which ports are open on the target devices.. Shazzam is the scanning phase that detects which ports are open on the target IPs.

Answer

To run patterns.

Answer

To classify the device type.

Answer

To update the CMDB.

Question 2

An administrator needs to restrict a Discovery Schedule to only scan specific IP addresses within a subnet during off-peak hours. Which configuration fulfills this requirement?

Accepted Answer

Create a Discovery Range in the Discovery Range Sets table and link it to the Discovery Schedule.. Discovery Ranges allow the definition of specific IP ranges, and the Schedule provides the timing mechanism.

Answer

Configure the 'Exclude IP' field directly on the Discovery Schedule record.

Answer

Use the Shazzam probe parameters in the behavior definition.

Answer

Modify the MID Server cluster properties to filter IP addresses.

Question 3

During the Shazzam phase, Discovery identifies that a port is open. If the port corresponds to a configured classifier but no trigger probe is defined, what is the default behavior?

Accepted Answer

The classification phase initiates, but exploration cannot trigger.. The classification phase will proceed, but without a trigger probe, the classification will likely fail to move to the exploration phase.

Answer

The CI is ignored, and the scan continues.

Answer

Discovery automatically guesses the OS type.

Answer

The scan for that IP is immediately aborted.

Question 4

When 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?

Accepted Answer

The payload is rejected with an error indicating an identification rule non-uniqueness.. IRE provides specific error codes to indicate when an identification rule is not unique, which must be resolved to avoid data corruption.

Answer

The match is ignored, and all attributes are updated in both records.

Answer

The first match found is updated.

Answer

A new CI is created as a duplicate.

Question 5

Which record type is used to associate a credential with a specific Discovery Schedule, allowing for secure and automated credential selection?

Accepted Answer

Credential Alias. Credential Aliases allow for a decoupled way to reference credentials in schedules and behaviors.

Answer

Discovery Range

Answer

Discovery Behavior

Answer

MID Server Cluster

Question 6

You need to ensure that Discovery ignores a specific range of IP addresses within a larger CIDR block that is already configured. What is the most efficient configuration approach?

Accepted Answer

Add the ranges to the Excluded IP Ranges related list.. The Excluded IP Ranges related list on the Discovery Schedule record allows you to explicitly ignore specific IPs.

Answer

Configure a Discovery Behavior to exclude the IPs.

Answer

Delete the original schedule and recreate two smaller schedules.

Answer

Create an ACL to block the IP addresses.

Question 7

When configuring an IP Range for a Discovery Schedule, what format must be used for a block of IPs?

Accepted Answer

CIDR notation or start and end IP addresses.. Discovery supports CIDR notation (e.g., 10.10.10.0/24) or range start/end formats.

Answer

Wildcard characters like 10.10.*.*.

Answer

Subnet mask in decimal format.

Answer

A list of individual IP addresses separated by commas.

Question 8

You have a custom application that Discovery is currently ignoring. You want to trigger a specific pattern when the device is classified as a 'Linux Server'. Where do you configure this relationship?

Accepted Answer

In the Discovery Classification record. Discovery Classification records link CIs to specific patterns, allowing you to trigger custom patterns for specific device types.

Answer

In the ECC Queue

Answer

In the Discovery Schedule

Answer

In the CI Identification Rule

Question 9

Which phase of Discovery is responsible for matching the fingerprint of a device to a specific Classification record?

Accepted Answer

Classification. Classification is the phase where the device is identified based on the fingerprints returned by probes.

Answer

Identification

Answer

Shazzam

Answer

Exploration

Question 10

A customer needs to discover devices across a firewall. What is the standard configuration to allow this?

Accepted Answer

Place a MID Server inside the network segment of the target devices.. The MID Server must be placed in a zone that can communicate with the target devices, and the firewall must allow the specific ports required by the probes.

Answer

Open all ports on the firewall.

Answer

Use a VPN connection on the instance.

Answer

Enable 'External Discovery' in the instance.

Question 11

Which of the following is NOT a phase of the Discovery process?

Accepted Answer

Verification. The four phases are Shazzam, Classification, Identification, and Exploration. 'Verification' is not one of them.

Answer

Identification

Answer

Shazzam

Answer

Exploration

Question 12

When configuring a Discovery Behavior, what is the primary purpose of defining 'Probes' within the behavior?

Accepted Answer

To control which probes are launched for specific device types.. Behaviors are collections of probes that dictate the scope of the discovery execution.

Answer

To define the IP address range.

Answer

To define the credential to be used.

Answer

To define which MID Server to use.

Question 13

You need to ensure that Discovery only scans specific ports for a particular set of Linux servers. Where should you configure this customized port list to override the default Shazzam probe settings?

Accepted Answer

In the Discovery Behavior record. Port Probes are defined within a Discovery Behavior, which allows you to specify a custom Port Probe record containing the specific ports to be scanned.

Answer

In the Discovery Schedule record

Answer

In the MID Server capability list

Answer

In the Discovery Range set

Question 14

A 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?

Accepted Answer

Identification and Reconciliation Engine (IRE) Data Source Rules. The CMDB CI Class Models and the mapping configuration in the pattern or identification rule define how attributes are populated.

Answer

Discovery Log

Answer

CMDB Data Manager

Answer

Discovery Dashboard

Question 15

What is the purpose of the 'Identification' phase in Discovery?

Accepted Answer

To match the discovered CI to an existing one in the CMDB.. The Identification phase reconciles discovered data with existing CIs in the CMDB using defined Identification Rules.

Answer

To find the IP address of the device.

Answer

To determine what the device is.

Answer

To gather hardware details.

Question 16

What does 'Discovery' in ServiceNow primarily populate?

Accepted Answer

The CMDB.. Discovery is designed to populate the Configuration Management Database (CMDB).

Answer

The knowledge base.

Answer

The user database.

Answer

The incident table.

Question 17

When a MID server is part of a cluster, what happens if one node fails during a discovery scan?

Accepted Answer

The task is re-assigned to another available node in the cluster.. If configured, the cluster manages the failure and can distribute tasks to other nodes in the cluster.

Answer

The scan is marked as 'Partial'.

Answer

The scan restarts from the beginning.

Answer

The scan fails completely.

Question 18

You need to add a new port to be scanned by Discovery. Which record do you update?

Accepted Answer

The IP Service record.. You update the 'IP Service' record to include the new port.

Answer

The MID Server capabilities.

Answer

The Discovery Schedule.

Answer

The Discovery Classifier.

Question 19

Which THREE parsing methods are available in the 'Parse' step?

Accepted Answer

JSON. The Parse step supports several formats including JSON, XML, and Regex.

Answer

JavaScript

Answer

SQL

Question 20

What is the benefit of using an Extension section in a pattern?

Accepted Answer

To allow for modularity and reuse of logic.. Extension sections promote code reusability across multiple patterns.

Answer

To bypass the need for identification.

Answer

To increase the execution speed.

Answer

To automatically update CMDB schemas.