In a networking class, the instructor tells the students to ping the other computers in the classroom from the command prompt. Why do all pings in the class fail?

In a networking class, the instructor tells the students to ping the other computers in the classroom from the command prompt. Why do all pings in the class fail?

• Port 25 is blocked and preventing the echo request from being transmitted.
• The computers are on different networks.
• A virus is on the classroom computers.
• The Windows firewall is blocking the ping.

Explanation: Unsuccessful pings usually indicate a network problem which eliminates the virus option. In this case computers in the same classroom would also be on the same network. Port 25 is used used by the email SMTP protocol, not by ping.

Exam with this question: CCNA Cyber Ops Final Exam Answers