Home » Cisco » 640-802 » At which OSI layer is the problem?
Refer to the exhibit.
An administrator pings the default gateway at 10.10.10.1 and sees the output as shown. At which OSI layer is the problem?
A. data link layer
B. application layer
C. access layer
D. session layer
E. network layer
Correct Answer: E
Explanation/Reference:
The command ping uses ICMP protocol, which is a network layer protocol used to propagate control message between host and router.
The command ping is often used to verify the network connectivity, so it works at the network layer.
