Free Certified Implementation Specialist - Discovery Practice Questions

Global variables are variables that are automatically available for all steps in horizontal discovery patterns. They store information about the target CI, such as its IP address, host name, operating system, and credentials. There are two global variables that may be used for steps in horizontal discovery patterns: system and computer_system. The system variable contains the information about the target CI’s IP address, host name, and credentials. The computer_system variable contains the information about the target CI’s operating system, such as its name, version, and architecture12.

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.

In a Merge Table pattern operation within ServiceNow Discovery, the editable fields typically include the Target Table, Second Table, and First Table. These fields are configurable and allow users to specify the tables involved in the merge operation. The Target Table is where the merged data will be stored, while the First and Second Tables are the source tables whose data is being merged. The Primary Table is not typically an editable field in this context.References= ServiceNow Discovery documentation, particularly the sections discussing pattern design and operations, including Merge Table operations within Discovery Patterns.

A horizontal discovery pattern is a series of operations that tell Discovery how to find and identify an application on a host1. To extract the build and version numbers from the config file, the pattern can use either of the following methods:

Parse File operation with Delimited Text parsing strategy: This operation reads the content of a file and splits it into fields based on a delimiter character. The pattern can specify the delimiter as a space and the fields to extract as the second and fourth ones from the first line of the file2.

Parse File operation with Regular Expression parsing strategy: This operation reads the content of a file and matches it against a regular expression. The pattern can specify the regular expression as app build (\d+\.\d+\.\d+\.\d+) version (\d+\.\d+) and the groups to extract as the first and second ones from the first line of the file2.

Horizontal discovery patterns are a series of operations that tell Discovery which CIs to find on your network, what credentials to use, and what tables to populate in the CMD

B.