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質問 1：
Running the command on the router and its display information is as follows:
<RTA>displaisis brief
ISIS (1) Protocol Brief Information:
network-entit:
01.1111.1111.1111.00
is-level: level-1-2
cost-ste: narrow
preference: 15
Lsp-length receive: 1497
Lsp-length originate: level-1 1476
level-2 1476
maximum imported routes number: 10000
Timers:
lsp-max-age: 1200
lsp-refresh: 900
Interval between SPFs: 10
From the above information, we can know that RTA______.
A. Its Stem-ID is 1111.1111.1111
B. is a Level-1 router
C. Its Stem-ID is 1111.1111.1111.00
D. is a Level-1-2 router
正解：A,D
質問 2：
In OSPF protocol, ASBR cannot aggregate LSA types:
A. Type3 LSA
B. Type7 LSA
C. Type5 LSA
D. Type4 LSA
正解：A,D
質問 3：
As shown in the figure, RTA needs to communicate with PCA and PCB at the same time, so it needs to ________ on RTA.
A. enable only IPv6 stack
B. Neither IPv4 nor IPv6 are enabled
C. enable only IPv4 stack
D. enable both IPv4 and IPv6 stacks
正解：D
質問 4：
Advantages of route aggregation include _________.
A. Reduce the possibility of routing loops
B. Reduce route size and speed up route matching
C. Reduce routing update traffic
D. Reduce administrator's configuration work for routing protocols
正解：B,C
質問 5：
As shown in the figure, RTA, RTB, and RTC run OSPF, and the process number is 100; RTA, RTB, and RTD run OSPF process 200. The cost of all interconnected links is set to 10. Set the external route priority of OSPF 100 to 190 on RTA and RTB, and import an external route 172.16.1.0/24 to OSPF100 on RTC. The RTA is set to import the routes of OSPF100 to OSPF200, and the settings on RTB are to import the routes of OSPF200 to OSPF100 again. After the operation is stable, assume that the external route 172.16.1.0/24 imported on the RTC suddenly disappears.
According to the above scenario analysis, the following description is incorrect is ______.
A. Route for 172.16.1.0/24 on RTD disappeared
B. Route for 172.16.1.0/24 on RTC disappeared
C. The route of 172.16.1.0/24 on RTC still exists, and the next hop points to RTB
D. The route of 172.16.1.0/24 on RTD still exists, and the next hop points to RTA
正解：A,B
質問 6：
Among the following routing protocols, ______ belongs to EGP, and ______ uses link state algorithm.
A. OSPF; BGP
B. BGP; RIP
C. OSPF; RIP
D. BGP; OSPF
正解：D
質問 7：
As shown in the figure, RTA, RTB, and RTC are located in AS100, AS200, and AS300, respectively. Users do not want AS100 to transfer traffic between AS200 and AS300. The best way to achieve this requirement is:
A. Define AS_PATH List on RTA, and then apply it to the outbound direction of EBGP neighbors on RTA. ip as-path 1 den^200$ ip as-path 1 den^300$ ip as-path 1 permit
B. Define AS_PATH List on RTA, and then apply it to the outbound direction of EBGP neighbors on RTA. ip as-path 1 den^200_300$ ip as-pth 1 permit
C. Define AS_PATH List on RTA, and then apply it to the outbound direction of EBGP neighbors on RTA. ip as-path 1 den^200$ ip as-path 1 den^300$ ip as-pth 1 permit
D. Configure access control on the interconnection interface of RTA, RTB and RTC, and do not allow mutual access between AS 200 and 300.
正解：C
質問 8：
The command to configure a silent interface on a router so that the router does not send OSPF protocol packets is _______.
A. RTA-ospf-1]silent-interface serial2/0
B. RTA-ospf-1-area-0.0.0.1]silent-interface serial2/0
C. RTA-ospf]silent-interface serial2/0
D. RTA-Serial2/0]silent-interface
正解：A
質問 9：
In the OSI network system, the one with similar functions to the IP protocol in TCP/IP is _________.
A. Connectionless Network Protocol ( CLNP )
B. Connectionless Network Service ( CLNS )
C. Network Protocol Data Unit (NPDU)
D. Network Service Access Point (NSAP)
正解：A
Running the command on the router and its display information is as follows:
<RTA>displaisis brief
ISIS (1) Protocol Brief Information:
network-entit:
01.1111.1111.1111.00
is-level: level-1-2
cost-ste: narrow
preference: 15
Lsp-length receive: 1497
Lsp-length originate: level-1 1476
level-2 1476
maximum imported routes number: 10000
Timers:
lsp-max-age: 1200
lsp-refresh: 900
Interval between SPFs: 10
From the above information, we can know that RTA______.
A. Its Stem-ID is 1111.1111.1111
B. is a Level-1 router
C. Its Stem-ID is 1111.1111.1111.00
D. is a Level-1-2 router
正解：A,D
質問 2：
In OSPF protocol, ASBR cannot aggregate LSA types:
A. Type3 LSA
B. Type7 LSA
C. Type5 LSA
D. Type4 LSA
正解：A,D
質問 3：
As shown in the figure, RTA needs to communicate with PCA and PCB at the same time, so it needs to ________ on RTA.
A. enable only IPv6 stack
B. Neither IPv4 nor IPv6 are enabled
C. enable only IPv4 stack
D. enable both IPv4 and IPv6 stacks
正解：D
質問 4：
Advantages of route aggregation include _________.
A. Reduce the possibility of routing loops
B. Reduce route size and speed up route matching
C. Reduce routing update traffic
D. Reduce administrator's configuration work for routing protocols
正解：B,C
質問 5：
As shown in the figure, RTA, RTB, and RTC run OSPF, and the process number is 100; RTA, RTB, and RTD run OSPF process 200. The cost of all interconnected links is set to 10. Set the external route priority of OSPF 100 to 190 on RTA and RTB, and import an external route 172.16.1.0/24 to OSPF100 on RTC. The RTA is set to import the routes of OSPF100 to OSPF200, and the settings on RTB are to import the routes of OSPF200 to OSPF100 again. After the operation is stable, assume that the external route 172.16.1.0/24 imported on the RTC suddenly disappears.
According to the above scenario analysis, the following description is incorrect is ______.
A. Route for 172.16.1.0/24 on RTD disappeared
B. Route for 172.16.1.0/24 on RTC disappeared
C. The route of 172.16.1.0/24 on RTC still exists, and the next hop points to RTB
D. The route of 172.16.1.0/24 on RTD still exists, and the next hop points to RTA
正解：A,B
質問 6：
Among the following routing protocols, ______ belongs to EGP, and ______ uses link state algorithm.
A. OSPF; BGP
B. BGP; RIP
C. OSPF; RIP
D. BGP; OSPF
正解：D
質問 7：
As shown in the figure, RTA, RTB, and RTC are located in AS100, AS200, and AS300, respectively. Users do not want AS100 to transfer traffic between AS200 and AS300. The best way to achieve this requirement is:
A. Define AS_PATH List on RTA, and then apply it to the outbound direction of EBGP neighbors on RTA. ip as-path 1 den^200$ ip as-path 1 den^300$ ip as-path 1 permit
B. Define AS_PATH List on RTA, and then apply it to the outbound direction of EBGP neighbors on RTA. ip as-path 1 den^200_300$ ip as-pth 1 permit
C. Define AS_PATH List on RTA, and then apply it to the outbound direction of EBGP neighbors on RTA. ip as-path 1 den^200$ ip as-path 1 den^300$ ip as-pth 1 permit
D. Configure access control on the interconnection interface of RTA, RTB and RTC, and do not allow mutual access between AS 200 and 300.
正解：C
質問 8：
The command to configure a silent interface on a router so that the router does not send OSPF protocol packets is _______.
A. RTA-ospf-1]silent-interface serial2/0
B. RTA-ospf-1-area-0.0.0.1]silent-interface serial2/0
C. RTA-ospf]silent-interface serial2/0
D. RTA-Serial2/0]silent-interface
正解：A
質問 9：
In the OSI network system, the one with similar functions to the IP protocol in TCP/IP is _________.
A. Connectionless Network Protocol ( CLNP )
B. Connectionless Network Service ( CLNS )
C. Network Protocol Data Unit (NPDU)
D. Network Service Access Point (NSAP)
正解：A
伊东** -
最小限の対策で合格をめざす参考書だと思う。GB0-381-ENU試験本番の問題とほぼあってる。広大な試験分野を1冊でカバーしてる！