Nokia 4A0-112 問題集

質問 1：
Which of the following statements about IS-IS is FALSE?
A. A level-1 router forwards traffic to other areas through the nearest I eve I-1/1 eve I-2 router.
B. IS-IS uses the concept of level-1 and level-2 routers to implement hierarchy.
C. In IS-IS, routers are associated with an area, not the interfaces.
D. A router becomes level-2 when it is associated with the backbone area.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 2：
When using IS-IS in native mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?
A. In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.
B. It may lead to traffic black-holing if not properly designed.
C. The same topology information is used to calculate the shortest path tree for both IPv4 and IPv6.
D. All links are assumed to be IPv4- and IPv6-capable.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Refer to the exhibit.

Static routing is to be used in a network between a corporate head office and a branch office. The head office has many connected subnetworks, whereas the branch office has one subnetwork and a single connection to the head office. Which of the following is the most likely configuration on the head office and branch office routers?
A. The head office has a default route and the branch office has a specific static route.
B. The head office has a specific static route and the branch office has a default route.
C. The head office and the branch offices both have specific static routes.
D. The head office and the branch office both have default routes.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Refer to the exhibit.

Routers R1 through R4 are running an IGP in such a way that they have each other's system IP addresses in their routing tables. A static route is configured on router R1 so that it can reach subnetwork 10.4.100.0/24. The network administrator decides to use an indirect static route, as shown in the diagram. However, pinging the server from router R1 fails. What may be the problem in this case?
A. Router R2 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
B. Router R1 drops the echo request because address 10.10.10.3 does not belong to an adjacent router.
C. The echo request arrives at the server but there is no path for the echo response to return to router R1.
D. Router R3 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Refer to the exhibit.

All routers in the diagram are running an interior gateway protocol (IGP) and have been configured with an ECMP value of 4. Router R5 advertises the prefix 192.168.3.0/24 using the IGP. Assuming all links have the same cost, how many entries for prefix 192.168.3.0/24 will be in router R3's routing table?
A. 2
B. 3
C. 4
D. 1
正解：C
解説: (Topexam メンバーにのみ表示されます)