What does the ping command test?
AnswerWhether a host is reachable over a network
Ping checks reachability and round-trip time.
Tech · Facts & stats
Ping facts & stats
7 fact-checked facts about ping, network latency and internet basics, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Which IPv4 address refers to your own computer (localhost)?
Answer127.0.0.1
127.0.0.1 is the IPv4 loopback address.
Going deeper
Which protocol does ping use?
AnswerICMP
Ping uses the Internet Control Message Protocol.
The name 'ping' was inspired by what?
AnswerThe sound of sonar
Its author named it after the ping of sonar.
What does TTL stand for in ping output?
AnswerTime to live
TTL limits how many hops a packet can take.
Expert level
What is the ICMP type number for an echo request?
Answer8
Echo request is type 8; echo reply is type 0.
What is the IPv6 loopback address?
Answer::1
::1 is the IPv6 equivalent of 127.0.0.1.
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