4A0-112 試験問題を無料オンラインアクセス

Refer to the exhibit.

A static route has been configured on router R1 to reach the PC at 139.120.121.2.
What might be causing the ping to fail?

• A.Router R1 needs a static route to router R2.
• B.The configured static route needs to be a default route.
• C.The configured next hop does not belong to a subnet adjacent to R1.
• D.Router R2 needs a static route to the PC.

When using IS-IS in native mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?

• A.The same topology information is used to calculate the shortest path tree for both IPv4 and IPv6.
• B.It may lead to traffic black-holing if not properly designed.
• C.In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.
• D.All links are assumed to be IPv4- and IPv6-capable.

Which of the following is NOT a function of the control plane a router?

• A.To utilize the forwarding tables to forward data packets towards their destination.
• B.To establish routing paths to deliver packets from source to destination and to reestablish them in case of failure.
• C.To determine the best way to forward packets.
• D.To exchange signaling messages with other routers.

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

There are several differences between IS-IS Hello packets used on broadcast interfaces and on point-to-point interfaces.
Which of the following statements is FALSE?

• A.Broadcast Hello messages identify the elected designed IS (DIS) and point-to-point Hello messages do not.
• B.The neighbors are identified using their interface MAC addresses on broadcast Hello messages and using their system IDs on point-to-point Hello messages.
• C.The multicast MAC addresses to which the Hello messages are sent are different on broadcast interfaces and on point-to-point interfaces.
• D.On broadcast interfaces there are different Hello packet types for level-1 and level-2 adjacencies, whereas on point-to-point interfaces there is a single Hello packet type.