Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) — Question 147

An engineer is addressing a connectivity issue between two servers where the remote server is unable to establish a successful session. Initial checks show that the remote server is not receiving a SYN-ACK while establishing a session by sending the first SYN. What is causing this issue?

Answer options

• A. incorrect TCP handshake
• B. incorrect UDP handshake
• C. incorrect OSI configuration
• D. incorrect snaplen configuration

Correct answer: A

Explanation

The correct answer is A because the inability to receive a SYN-ACK indicates a failure in the TCP handshake process, which is crucial for establishing a session. The other options are incorrect as they refer to different protocols or configurations that do not directly relate to the TCP connection process.