Which ICMPv6 type corresponds to Echo Request?

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Multiple Choice

Which ICMPv6 type corresponds to Echo Request?

Explanation:
In ICMPv6, messaging follows numeric type values. The Echo Request is the initiating ping message used to check reachability, and its type value is 128. The reply to that ping, Echo Reply, uses type 129. The other numbers belong to router discovery functions: Router Solicitation is 133 and Router Advertisement is 134, which help hosts learn about routers rather than perform a ping exchange. So the type that corresponds to Echo Request is 128.

In ICMPv6, messaging follows numeric type values. The Echo Request is the initiating ping message used to check reachability, and its type value is 128. The reply to that ping, Echo Reply, uses type 129. The other numbers belong to router discovery functions: Router Solicitation is 133 and Router Advertisement is 134, which help hosts learn about routers rather than perform a ping exchange. So the type that corresponds to Echo Request is 128.

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