Certified Ethical Hacker (CEH v11) — Question 223

During the enumeration phase, Lawrence performs banner grabbing to obtain information such as OS details and versions of services running. The service that he enumerated runs directly on TCP port 445.
Which of the following services is enumerated by Lawrence in this scenario?

Answer options

• A. Remote procedure call (RPC)
• B. Telnet
• C. Server Message Block (SMB)
• D. Network File System (NFS)

Correct answer: C

Explanation

The correct answer is C, Server Message Block (SMB), as it is the service that specifically uses TCP port 445 for file and printer sharing. Options A (RPC), B (Telnet), and D (NFS) do not operate on this port, making them incorrect in this context.