Understanding Cisco Cybersecurity Fundamentals (SECFND, legacy) — Question 62

Which one of these source ports does a client dynamically use when it connects to a server that is listening on a well-known port?

Answer options

• A. ephemeral
• B. registered
• C. well-known
• D. first available port on the client system

Correct answer: A

Explanation

The correct answer is A, as ephemeral ports are temporary ports assigned to clients for the duration of a connection. Registered ports are not used for client-side connections, and well-known ports are designated for server services, while the 'first available port on the client system' is not a standard term in this context.