To verify whether the login ID that was used to log in to QRadar is...

Understanding Login ID Verification: Verifying whether a login ID is assigned to a user involves checking a mapping of login IDs to user records. This process requires a data structure that can map unique login IDs to user information.

Suitable Reference Data Collection:

Reference Map of Maps: Used for storing nested key-value pairs but more complex than needed for simple login ID verification.

Reference Login: Not a standard reference data collection in QRadar.

Reference Map: Ideal for mapping login IDs (unique keys) to user details (values).

Reference Set: Stores unique values but does not map them to any associated data.

Using Reference Map: The reference map is the appropriate choice as it allows for direct mapping of each login ID to corresponding user details. This structure facilitates efficient verification processes.

Reference Confirmation: According to IBM QRadar documentation, using a reference map to associate login IDs with user details is a standard approach for verifying user assignments.

References:

IBM QRadar documentation on reference data collections indicates the use of reference maps for mapping unique identifiers like login IDs to user records.