What network protocol is primarily used for troubleshooting and is the foundation of the ping command?

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Multiple choice — select the best answer

AFTP
BICMP
CNTP
DDHCP

✓ Correct answer: B. ICMP ICMP (Internet Control Message Protocol) is used for network diagnostics and error reporting. The ping command uses ICMP Echo Request and Echo Reply messages to test connectivity between hosts.

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What network protocol is primarily used for troubleshooting and is the foundation of the ping command?

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