Your question is SSH Port Number. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What port number is SSH on?
State the default transport and port, explain that SSH can be configured to use another port, and describe how you would verify the active listener on a Linux host. Mention one security consideration when exposing SSH.