PDF CIS-Discovery Study Guide

 The Service Account for the MID Server must have the Log on as service right on the Windows platform. This right allows the MID Server to run as a Windows service and communicate with the ServiceNow instance. The Service Account does not need to have local or domain admin rights, as these are not required for the MID Server functionality. The MID Server User Role is a role on the ServiceNow instance, not on the Windows platform, and it is used to control the access and permissions of the MID Server on the instance.

References:

• Correcting MID Server Windows service account user and permissions
• What is a ServiceNow MID Server and how does it work?
• Configure Windows MID Server service credentials

The image shows a part of a horizontal pattern in Pattern Designer that uses the WMI Query operation to retrieve information about the processes running on a Windows server. The operation takes a WQL query as an input parameter and returns a tabular variable that contains the results of the query. The tabular variable is named ‘WMI Query’ by default, but it can be renamed by the user. The WQL query in the image selects four attributes from the Win32_Process class: Name, MaximumWorkingSetSize, PageFaults, and PeakVirtualSize. These attributes are stored as scalar variables in the tabular variable, and they can be accessed by using the dot notation, such as WMI Query.Name or WMI Query.MaximumWorkingSetSize. Therefore, the most probable results of the image are a tabular variable named ‘WMI Query’ and two scalar variables named ‘MaximumWorkingSetSize’ and ‘PeakVirtualSize’.

References:

• Pattern Designer | WMI Query
• Win32_Process class
• WQL (SQL for WMI)

The SNMP Query pattern operation executes an SNMP query on a target device and stores the results in a variable. The Variable Type field determines the format of the results. There are two valid Variable Types for this operation: Table and Scalar. Table is used when the query returns multiple values, such as a list of interfaces or processes. Scalar is used when the query returns a single value, such as the system name or uptime12.

References:

• SNMP Query pattern operation - Product Documentation: San Diego - Now Support Portal
• SNMP Query pattern operation - Product Documentation: Vancouver - ServiceNow

A horizontal pattern must have a TCP entry point type or an ALL entry point type to execute from a process classifier. A process classifier is a rule that matches a process running on a host and triggers a horizontal pattern to discover the application associated with that process1. The entry point type determines the type of connection that the pattern uses to access the target host. A TCP entry point type means that the pattern uses a TCP port to connect to the host, while an ALL entry point type means that the pattern can use any available connection method2.

References:

• 1: Process classifiers - Product Documentation: San Diego - ServiceNow
• 2: Horizontal Pattern probe - Product Documentation: San Diego - ServiceNow