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質問 1：
I-SPF and PRC can speed up ISIS route convergence. PRC does not calculate nodes. Instead, it updates routes based on the shortest path tree (SPT) calculated using the SPF algorithm.
A. TRUE
B. FALSE
正解：A
質問 2：
An interface of a switch is in error-down state. A possible cause is that the average rate of broadcast packets received by the interface exceeds the upper threshold set by the administrator for storm control.
A. TRUE
B. FALSE
正解：A
質問 3：
On the OSPFv3 network shown in the figure:
* Area 1 is a stub area, Area 2 is a common area, and Area 3 is an NSSA (Not-So-Stubby Area).
* The IPv6 address of Loopback0 on R6 is 2000::6/128.
* The router ID of each router is 10.0.X.X, where X is the router number.
* The stub no-summary command is configured in Area 1 on R2.
Which of the following statements is true?
A. The path for data packets from R4 to 2000::6 is R4 -> R2 -> R6.
B. The path for data packets from R4 to 2000::6 is R4 -> R1 -> R5 -> R3 -> R6.
C. The LSDB of R4 contains the Inter-Area-Prefix-LSA that is generated by R1 and describes 2000::
6/128.
D. The routing table of R4 does not contain the route 2000::6/128.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
On the OSPFv3 network shown in the figure, area 1 is a common area. Which of the following statements are true?
A. R1, R2, and R3 generate Inter-Area-Prefix-LSAs.
B. The LSDBs of R1, R2, and R3 are the same.
C. If R5 imports an external route, R4 does not need to rely on the Inter-Area-Router-LSA to calculate the external route.
D. The LSDBs of R4 and R5 are the same.
正解：A,D
質問 5：
In the figure, packets are forwarded based on MPLS on the network.
When PE2 receives a packet from P2, what is the label value carried in the packet?
Options:
A. There is no label.
B. The label values are 3 and 1033.
C. The label value is 1033.
D. The label value is 3.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RRs (Route Reflectors), and R1, R4, R3, and R6 are clients. The iBGP peer relationships are established using Loopback0 on each router, and the router ID is 10.0.0.X/32, where X is the number of the router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import- route command. Which of the following statements are true?
A. The routing table of R1 does not contain the route 192.168.2.0/24.
B. The routing table of R4 contains two equal-cost default routes.
C. The route 192.168.1.0/24 in the routing table of R3 has two next hops.
D. For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2, and R6 preferentially selects the BGP route received from R5.
正解：C,D
解説: (Pass4Test メンバーにのみ表示されます)
I-SPF and PRC can speed up ISIS route convergence. PRC does not calculate nodes. Instead, it updates routes based on the shortest path tree (SPT) calculated using the SPF algorithm.
A. TRUE
B. FALSE
正解：A
質問 2：
An interface of a switch is in error-down state. A possible cause is that the average rate of broadcast packets received by the interface exceeds the upper threshold set by the administrator for storm control.
A. TRUE
B. FALSE
正解：A
質問 3：
On the OSPFv3 network shown in the figure:
* Area 1 is a stub area, Area 2 is a common area, and Area 3 is an NSSA (Not-So-Stubby Area).
* The IPv6 address of Loopback0 on R6 is 2000::6/128.
* The router ID of each router is 10.0.X.X, where X is the router number.
* The stub no-summary command is configured in Area 1 on R2.
Which of the following statements is true?
A. The path for data packets from R4 to 2000::6 is R4 -> R2 -> R6.
B. The path for data packets from R4 to 2000::6 is R4 -> R1 -> R5 -> R3 -> R6.
C. The LSDB of R4 contains the Inter-Area-Prefix-LSA that is generated by R1 and describes 2000::
6/128.
D. The routing table of R4 does not contain the route 2000::6/128.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
On the OSPFv3 network shown in the figure, area 1 is a common area. Which of the following statements are true?
A. R1, R2, and R3 generate Inter-Area-Prefix-LSAs.
B. The LSDBs of R1, R2, and R3 are the same.
C. If R5 imports an external route, R4 does not need to rely on the Inter-Area-Router-LSA to calculate the external route.
D. The LSDBs of R4 and R5 are the same.
正解：A,D
質問 5：
In the figure, packets are forwarded based on MPLS on the network.
When PE2 receives a packet from P2, what is the label value carried in the packet?
Options:
A. There is no label.
B. The label values are 3 and 1033.
C. The label value is 1033.
D. The label value is 3.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RRs (Route Reflectors), and R1, R4, R3, and R6 are clients. The iBGP peer relationships are established using Loopback0 on each router, and the router ID is 10.0.0.X/32, where X is the number of the router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import- route command. Which of the following statements are true?
A. The routing table of R1 does not contain the route 192.168.2.0/24.
B. The routing table of R4 contains two equal-cost default routes.
C. The route 192.168.1.0/24 in the routing table of R3 has two next hops.
D. For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2, and R6 preferentially selects the BGP route received from R5.
正解：C,D
解説: (Pass4Test メンバーにのみ表示されます)
Shiozawa -
解釈でわかりやく内容を明示。つまづきやすいポイントをフォローしてくれてるPass4Test。試験に合格できる分は大きいと思います