CCNA Routing and Switching (legacy) — Question 138

Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsulation?

Answer options

• A. router#show platform
• B. router#show interfaces Serial 0/2/0
• C. router#show ip interface s0/2/0
• D. router#show ip interface brief

Correct answer: B

Explanation

The correct answer is B because the 'show interfaces' command provides detailed information about the specified interface, including the encapsulation type. The other options either provide platform information or summary data that does not include specific details about encapsulation on the interface.