CIS-Discovery Exam Preparation Material | Certified Implementation Specialist-Discovery

Explanation:
Variables are used in discovery patterns to store and manipulate data that is collected or calculated during the discovery process. There are three kinds of variables used in discovery patterns12:
CI attributes: These are variables that correspond to the attributes of the configuration item (CI) type that the pattern is discovering. For example, name, serial_number, manufacturer, etc. CI attributes are used to populate the CI record in the CMDB with the information gathered by the pattern. Temporary: These are variables that are created and used within the pattern, but are not stored in the CMDB. For example, $result, $output, $user_var, etc. Temporary variables are used to store and manipulate data such as the output of a command, the value of a parameter, or the result of a calculation.
Global: These are variables that are defined in the global scope and can be accessed by any pattern.
For example, $mid, $target, $ip_address, etc. Global variables are used to store and access data that is common to all patterns, such as the MID Server, the target device, or the IP address.
Reference: 1: ServiceNow Discovery Documentation, Pattern Variables section
2: ServiceNow Discovery Overview, page 11

Explanation:
To allow a MID Server to access servers using WinRM, the following configurations are required: MID Servers need to be added to the WinRM Group policy on the Servers: This enables the servers to accept WinRM connections from the MID Servers and grant them the necessary permissions to execute commands and scripts1.
MID Server Parameters Add WinRM: This enables the MID Server to use WinRM as a protocol for Discovery and Orchestration and specify the WinRM port, authentication method, and encryption
settings2.
Reference: Configure Windows servers for WinRM
MID Server Parameters Add WinRM

Explanation:
A horizontal pattern is a type of Discovery pattern that discovers configuration items (CIs) and their relationships by moving across the network from one device to another. A horizontal pattern can use the Change user operation to switch from the default credentials to any other appropriate credentials for a specific device or application. This operation allows the pattern to access different types of CIs with different authentication methods.
Reference: Discovery patterns
Change user operation

Explanation:
File-based Discovery is a process that helps identify what software is running on your Windows and UNIX servers and devices, even if there is no registration information available. File-based Discovery is triggered in the exploration phase of normal Discovery, after the target device has been classified and identified. File-based Discovery probes execute a scan searching for specific file extensions or file names in paths that you configure. The resulting file information is returned in the probe payload.
The sensor attempts to match the discovered files with installed software, using the file name, size, and version returned by the probe.
Reference: File-based Discovery, File Based Discovery - Support and Troubleshooting
Reference: https://docs.servicenow.com/bundle/paris-it-operations-management/page/product/discovery/concept/file-based-discovery.html