Building Scalable Cisco Internetworks (BSCI)
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A packet that needs to be forwarded arrives on an interface of a router. In order for a router to route
data, what must that router determine? (Select the best answer)
A. The route age of the next-hop device
B. The subnet mask of the source network
C. The cost metric of the path of the destination
D. The outbound interface of the best path to the destination
E. All of the above
In order to route the data to the correct destination the router must know the outbound interface that provides the
best destination. When a receives a packet that needs to be forwarded, the router determines the destination
network, looks up the best path to that destination in the routing table, and then forwards the packet out the
A. The age of the next-hop router is not consulted before forwarding information.
B. The destination subnet mask is used by the router to determine the best path (most specific network match
rule), but not the source subnet mask.
C. The cost metric is used by routing protocols to determine the best route to a destination. This best route is
then installed into the routing table. The router uses the routing table to forward packets, but does not use the
metrics for that specific route before forwarding each packet.
A new router is being installed into an existing network, and the routing table is being built for the first
time on this network. Which of the following statements is true regarding the routing tables on a Cisco
A. Entries are listed in the order of the route cost metric.
B. Only the active link is shown for load-balanced routers.
C. Privileged EXEC mode is required to view the routing table.