Which purpose of the AAA accounting feature is true when you use TACACS+ authentication?
A. It prompts users to change their passwords when they expire
B. it saves a timestamped record of user activity
C. it controls the activities that the user is permitted to perform
D. it verifies the user identity.
B
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/security/configuration_guide/b_sec_152ex_2960-x_cg/b_sec_152ex_2960-x_cg_chapter_0101.html
TACACS+ Accounting
The AAA accounting feature tracks the services that users are accessing and the amount of network resources that they are consuming. When AAA accounting is enabled, the switch reports user activity to the TACACS+ security server in the form of accounting records. Each accounting record contains accounting attribute-value (AV) pairs and is stored on the security server. This data can then be analyzed for network management, client billing, or auditing.