4A0-112 試験問題を無料オンラインアクセス

Which of the following is NOT a required configuration step to successfully run IS-IS on a router?

• A.The IS-IS context needs to be enabled.
• B.Layer-3 interfaces that will participate in IS-IS need to be identified.
• C.A reference bandwidth needs to be configured to calculate link costs.
• D.The router needs to be associated with an IS-IS area ID.

Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

• A.Route leaking is configured on router R2 but not on router R1.
• B.There is no route leaking configured on router R1 or router R2.
• C.Route leaking is configured on router R1 but not on router R2.
• D.Route leaking is configured on both routers R1 and R2.

A router is trying to establish an IS-IS adjacency with the DIS on a broadcast link. What event causes the adjacency to change from "Initializing" to "UP"?

• A.Receiving the last LSP requested from the DIS.
• B.Receiving a CSNP packet from the DIS acknowledging the last transmitted LSP.
• C.Receiving a Hello packet from the DIS that contains the local router's own MAC address in the neighbor list.
• D.Receiving the first CSNP packet from the DIS that lists the LSPs in the DIS's link-state database.

A routing domain uses a link-state routing protocol. Which of the following would NOT be an advantage of dividing the entire routing domain into areas?

• A.Less-capable routers can be isolated from having to keep track of IP prefixes that are external to the local routing domain.
• B.Fewer routers are required to handle the same amount of traffic, as compared to a single-area domain.
• C.Route tables can be reduced by summarizing the IP prefixes advertised between areas.
• D.Detailed topology information is only shared among routers within the same area, thus reducing the complexity of the SPF calculation.

Which of the following statements regarding the databases used by a link-state routing protocol in a single-are routing domain is FALSE?

• A.The link-state database is the same for all routers.
• B.The forwarding database contains the optimum next hop for each known prefix.
• C.The adjacency database contains information about all the links interconnecting the domain's routers.
• D.The link-state database has the local topology and IP reachability information advertised by all the routers.