Quiz: ports and firewall

One correct answer

curl --connect-timeout 3 http://192.0.2.10:8080/ prints Timeout was reached, while ping 192.0.2.10 gets replies. What do you check first?

• A The server's firewall rules.
• B The text of the /health answer.
• C Whether anybody listens on port 8080.
• D The client's route to the server.