CompTIA Network+ N10-009 Practice Question

In an enterprise where several departments frequently report network connectivity issues, a network technician is using diagnostic tools to identify the problem areas. The technician decides to utilize a protocol that helps in providing error messages and operational information indicating, for example, that a requested service is not available or that a host or router could not be reached. Which protocol is the technician utilizing?

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    ICMP

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    IPSec

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    TCP

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    DNS

CompTIA Network+ N10-009
Networking Concepts
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