Multiple choice

When network services fail, which port is most often used to access a router for management purposes?

  1. AUX

  2. Ethernet

  3. Console

  4. Telnet

  5. SSH
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When network services fail, in-band management access typically uses the Ethernet port. The console port (C) requires physical access and a console cable, which isn't always available. AUX (A) is a modem port for remote out-of-band access. Telnet (D) and SSH (E) are application-layer protocols that require network services to be functioning. If network services are down, you can't Telnet or SSH. The Ethernet port (B) is the correct answer because it provides in-band management access and doesn't depend on the failed network services - you can connect directly to the router's Ethernet interface for management.

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