Answer:
B. Windows domain user name and password
Explanation:
Windows domain user name and password are login credentials required for the user to successfully sign in to the Windows domain.
The domain username and password are usually stored on a domain controller rather than on the host.
As a domain user, the computer seeks from the domain controller the privileges assigned to the user, if it gets a positive response from the domain controller, it authorizes the users login credentials without restrictions; else, it denies the user access.
Answer: OCSP
Explanation:
Ocsp(online certificate status protocol) is used to maintain the security status of the server and also to determine the status of SSL/TLS certificates used by the webserver.
Answer:
3. System Software
Explanation:
An operating system is a special type of system software. It controls and co-ordinates overall of the computer.