Ping (ICMP) is a useful tool for debugging network problems. Give an example of how ping could be used in network testing.
Try an answer before revealing the guidance below.
Key Concepts
- ICMP Echo Request
- ICMP Echo Reply
- Reachability
- Gateway
Answer Approach
- Choose a concrete destination such as the default gateway.
- Describe what success or failure indicates.
- Note the limits of ICMP testing.
Full Answer
Answer status: Verified against study notes. Revision notes, not an official marking scheme.
Ping the default gateway. Echo Replies show that the host can exchange IP packets with its local router; no reply suggests a local host, link, or gateway problem, although ICMP filtering could also suppress replies. Pinging a farther host can help narrow the failure location.
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