CIS-Discovery Exam Dumps - ServiceNow Certified Implementation Specialist Questions and Answers

For ServiceNow Discovery to detect a Windows device, the Windows Management Instrumentation (WMI) service needs to be running on the host. WMI is a Windows feature that provides a standardized way to access management information about operating system components and services. Discovery uses WMI to query Windows hosts for information about their hardware, software, and system configuration. SSH is used for Unix-like systems, WinRM is an alternative Windows management protocol, and CIM (Common Information Model) is a cross-platform standard; however, WMI is the primary service used for Windows device discovery.

A classifier is a set of rules that identifies a device type based on the results of a probe. A classifier can have one or more related lists that define the classification criteria, the pattern probes, and the triggers probes. The pattern probes related list specifies which horizontal discovery pattern to run for the device type. The triggers probes related list specifies which probes to run after the device is classified, and before the horizontal discovery pattern is executed. The triggers probes can be used to gather additional information or credentials that are needed for the horizontal discovery pattern12.

To troubleshoot discovery issues from a discovery status in ServiceNow, the following related lists can be particularly useful:

Discovery Log- Provides detailed logs of the discovery process, helping to identify errors or issues encountered during discovery.

ECC Queue- Shows the messages and data passed between the ServiceNow instance and the MID Server, offering insights into the communication and data exchange during discovery.

Devices- Lists the devices discovered in the process, allowing for a direct view of the results and any potential issues with specific devices.

The "Running Processes" list is not typically used for troubleshooting discovery processes as it relates more to the operational aspects of the server or device rather than the discovery process itself.References= ServiceNow Discovery documentation, specifically the sections on Discovery troubleshooting and analysis, and the use of related lists for monitoring and troubleshooting purposes.

Step 25 uses a shared library called Windows - Storage, which is a reusable component that can be invoked by multiple patterns to discover the storage information of Windows servers. A shared library is a collection of steps that can be referenced by a pattern name and can accept input parameters and return output values. Shared libraries help to avoid duplication of code and simplify the maintenance of patterns.

Discovery and Service Mapping are both products that help to identify and map the IT infrastructure and services in an organization. However, they have different approaches and objectives. Discovery uses IP address ranges as the starting point for finding devices and applications on the network, and then runs probes and sensors to collect information and classify them. Discovery focuses on inventory-related use-cases, such as asset management, configuration management, and compliance. Service Mapping uses entry points, such as URLs or host names, as the starting point for mapping business services and their dependencies. Service Mapping runs patterns, which are sequences of operations that follow the traffic connections between devices and applications, and then creates a service map that shows the logical and semantic relationships. Service Mapping focuses on service-related use-cases, such as service availability, impact analysis, and root cause analysis12.

Quick Discovery is a wizard that helps you get up and running with Discovery quickly. It discovers both physical and logical components, including virtual machines, servers, storage, databases, applications, and more. To use Quick Discovery, you need to have a MID Server installed and configured, and provide a target IP range or subnet to scan. You do not need to create a Discovery Schedule or a PID for Quick Discovery.

In ServiceNow Discovery, the reconciliation process is governed by precedence rules. These rules determine which data source’s information will be retained if there are conflicts when multiple sources discover the same CI. In this case, Altiris has a higher order of precedence (300) compared to ServiceNow (100), as seen in the “Data Source Precedents” section of the image. Therefore, if Altiris discovers ‘Windows2’ for the name attribute on the same CI after ServiceNow sets it to ‘Windows1’, the name will change to ‘Windows2’ due to Altiris’s higher precedence.

One method for deleting specific CIs not discovered in 30 days is to use a scheduled job that runs a script to query the CMDB for CIs that have not been updated by Discovery for a certain period of time, and then delete them or mark them as retired. This method can help you keep your CMDB clean and accurate, and avoid having stale or obsolete CIs. You can configure the scheduled job to run at a specific frequency and time, and specify the criteria for selecting the CIs to delete.

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.

A horizontal discovery pattern is a sequence of operations that collects information about a specific type of configuration item (CI), such as an operating system, a database, or a web server1. A horizontal discovery pattern does not use the connectivity section, which is only used for the application pattern type2. The connectivity section defines how to connect to a CI and run commands on it3. A horizontal discovery pattern uses the following sections1:

Variables: Defines the variables that store the data collected by the pattern and map them to the target table fields.

Identification: Defines the criteria to identify a CI and update or create a record in the CMDB.

Operations: Defines the actions to perform on the target CI, such as running commands, querying databases, or parsing files.