Ccna certification Practice Tests

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 54.  Which protocol allows for testing and connectivity of a route?

A. IGMP

B. RARP

C. ARP

D. ICMP

 55.  Which routing protocol is a distance-vector routing protocol?

A. OSPF

B. RIP

C. EIGRP

D. BGP

 56.  When an ICMP packet reaches a router for which it has no further route, what happens?

A.  The router will discard the packet without notification.

B.  The router will change the TTL of the packet to 0.

C.  The router will send the packet back to the originating host.

D.  The router will send back a destination unreachable message.

 57.  Which statement accurately describes a routing loop?

A.  Packets are routed out one interface but come back on a different interface.

B.  Packets are transmitted within a series of routers and never reach the destination.

C.  Packets reach the expiry TTL before reaching the destination network.