» CCNA – Protocols & Services

EnsurepassQuestion 1 An administrator attempts a traceroute but receives a “Destination Unreachable” message. Which protocol is responsible for that message? A. RARP B. RUDP C. ICMP D. SNMP   Answer: C Explanation The ICMP destination unreachable message is generated by a router (which is reachable) to inform the source host that the destination unicast address is unreachable. Question 2 DNS servers provide what service? A. They run a spell check on host names to ensure Read more […]

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