CompTIA Security+ (SY0-501) — Question 536

A security analyst is running a credential-based vulnerability scanner on a Windows host. The vulnerability scanner is using the protocol NetBIOS over TCP/IP to connect to various systems, However, the scan does not return any results. To address the issue, the analyst should ensure that which of the following default ports is open on systems?

Answer options

• A. 135
• B. 137
• C. 3389
• D. 5060

Correct answer: B

Explanation

The correct answer is B, as port 137 is used for NetBIOS Name Service, which is essential for the scanner to communicate effectively over the protocol. Ports 135, 3389, and 5060 do not relate to NetBIOS traffic; port 135 is used for RPC, port 3389 is for Remote Desktop, and port 5060 is for SIP, making them irrelevant in this context.