Which of the following is not a default search group in Splunk?

In Splunk, default search groups are predefined categories that help organize and manage the different components of the Splunk infrastructure, specifically for the purposes of distributed search and resource management. Each group is associated with specific roles that the components play in the distributed architecture.

The group identified as "dmc_group_app_server" is not a default search group in Splunk, making it the correct choice for this question. Typically, default search groups focus on roles such as search heads and indexers, which are critical for executing searches and handling data ingestion, respectively.

On the other hand, "dmc_group_search_head" refers to the group associated with search heads, which manage search requests and deliver results back to users. "dmc_group_indexer" is tied to the machines responsible for indexing data and storing it. The "dmc_group_license_master" is connected to the component that manages licensing and is responsible for ensuring compliance across the Splunk deployment.

Recognizing the specific roles and functions of each default search group helps understand how data is processed and searched within a distributed Splunk environment, highlighting the absence of "dmc_group_app_server" as a default group.