Explanation
The correct answer is A because the /servicesNS/-/data/saved/searches/mySearch endpoint path can be used by someone with a power user role to access information about mySearch, a saved search owned by someone with a user role. The /servicesNS/-/data/saved/searches endpoint returns information about saved searches in a specific namespace. The - symbol in the URI means that the user and app context are inherited from the current session. Therefore, a power user can access the saved search information by using the - symbol, assuming the permissions are set appropriately. The other options are incorrect because they either use invalid endpoints or do not specify the user and app context correctly. You can find more information about the
/servicesNS endpoint and the namespace in the Splunk REST API Reference Manual.

Explanation
The endpoint that is used to authenticate with the Splunk REST API is /services/auth/login. This endpoint returns a session key that can be used for subsequent requests to the Splunk REST API. The other endpoints are either invalid or used for different purposes. For more information, see Authenticate with the Splunk REST API.