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質問 1：
Which of the following statements regarding ISIS route leaking are true?
A. IS-15 route leaking is used to prevent route loops.
B. IS-IS route leaking will not cause neighbor flapping.
C. In IS-IS route leaking, the routes to be leaked cannot be summary routes.
D. IS-15 route leaking can be configured in IPv6 environments.
E. IS-IS route leaking can be configured on Level-1 routers.
正解：A
質問 2：
The following is about the law of the China Security League Ipsec SA.
A. IPSec SA Ipsec VPN pairs must be in two-way to establish
B. SA, SP (Security Parameter Index) IP is uniquely identified by a ternary group. This set of ternary includes security parameter prime, source address and usage.
Security Number Agreement (or AH ESP)
C. Use the life to see the information about the encryption algorithm used by another display ipsec PSec, check the peer, etc. Interest traffic.
D. Only support encryption algorithm for data line encryption IPSec pair alignment.
正解：B
質問 3：
The precedence field in VLAN (802.1Q) data encapsulation has six bits.
A. TRUE
B. FALSE
正解：B
質問 4：
Use double-barrel dual-speed monitoring in the traffic pipe, the number of tokens in the bucket, and the number of tokens in the bucket. When a sentence with a degree C TC P TP B is reported, what is the following sentence?
Is the description correct?
A. If TP-B>0 and TC-B>0, the text is marked as green.
B. If and , the text is colored TP
C. If TP-B>0 and TC-B<0, the text is marked as yellow.
D. If TP-B<0 and TC-B<0, the text is marked as red.
正解：A,C,D
質問 5：
On a broadcast network, DIS election starts only after the neighbor relationship is established.
A. TRUE
B. FALSE
正解：B
質問 6：
Which of the following AS-_path attribute values can be niched by the AS-Path filter configured using ip as-path-filter 1 permit ,*(100|400)$ command?
A. 100
B. 3100
C. 300 4200
D. 1234 1400
正解：A,B,D
質問 7：
If no area is divided, which of the following statements regarding the link-state routing protocol are true?
A. Routers in the entire routing domain have the same LSDB.
B. Each router establishes a routing domain topology.
C. Routers in the same routing domain may repeatedly receive the same link state information.
D. The router sends all link state information from a neighbor to all the other neighbors to ensure data synchronization in the database.
E. Each router learns routing entries from updated routing information and adds them to the routing table.
正解：D
質問 8：
Improve reliability techniques including the following MPLS BGP VPNs?
A. At the access configuration layer CE dual network grouping
B. VPN FRR
C. VPN GR
D. PE CE IP FRR and private network routing
正解：A,B,C,D
質問 9：
Multicast IP 229.130.130.1, MAC: The address is the corresponding address of
A. 00-00-5E-82-82-01
B. 00-00-5E-02-82-01
C. 01-00-5E-02-82-01
D. 01-00-5E-82-82-01
正解：C
Which of the following statements regarding ISIS route leaking are true?
A. IS-15 route leaking is used to prevent route loops.
B. IS-IS route leaking will not cause neighbor flapping.
C. In IS-IS route leaking, the routes to be leaked cannot be summary routes.
D. IS-15 route leaking can be configured in IPv6 environments.
E. IS-IS route leaking can be configured on Level-1 routers.
正解：A
質問 2：
The following is about the law of the China Security League Ipsec SA.
A. IPSec SA Ipsec VPN pairs must be in two-way to establish
B. SA, SP (Security Parameter Index) IP is uniquely identified by a ternary group. This set of ternary includes security parameter prime, source address and usage.
Security Number Agreement (or AH ESP)
C. Use the life to see the information about the encryption algorithm used by another display ipsec PSec, check the peer, etc. Interest traffic.
D. Only support encryption algorithm for data line encryption IPSec pair alignment.
正解：B
質問 3：
The precedence field in VLAN (802.1Q) data encapsulation has six bits.
A. TRUE
B. FALSE
正解：B
質問 4：
Use double-barrel dual-speed monitoring in the traffic pipe, the number of tokens in the bucket, and the number of tokens in the bucket. When a sentence with a degree C TC P TP B is reported, what is the following sentence?
Is the description correct?
A. If TP-B>0 and TC-B>0, the text is marked as green.
B. If and , the text is colored TP
C. If TP-B>0 and TC-B<0, the text is marked as yellow.
D. If TP-B<0 and TC-B<0, the text is marked as red.
正解：A,C,D
質問 5：
On a broadcast network, DIS election starts only after the neighbor relationship is established.
A. TRUE
B. FALSE
正解：B
質問 6：
Which of the following AS-_path attribute values can be niched by the AS-Path filter configured using ip as-path-filter 1 permit ,*(100|400)$ command?
A. 100
B. 3100
C. 300 4200
D. 1234 1400
正解：A,B,D
質問 7：
If no area is divided, which of the following statements regarding the link-state routing protocol are true?
A. Routers in the entire routing domain have the same LSDB.
B. Each router establishes a routing domain topology.
C. Routers in the same routing domain may repeatedly receive the same link state information.
D. The router sends all link state information from a neighbor to all the other neighbors to ensure data synchronization in the database.
E. Each router learns routing entries from updated routing information and adds them to the routing table.
正解：D
質問 8：
Improve reliability techniques including the following MPLS BGP VPNs?
A. At the access configuration layer CE dual network grouping
B. VPN FRR
C. VPN GR
D. PE CE IP FRR and private network routing
正解：A,B,C,D
質問 9：
Multicast IP 229.130.130.1, MAC: The address is the corresponding address of
A. 00-00-5E-82-82-01
B. 00-00-5E-02-82-01
C. 01-00-5E-02-82-01
D. 01-00-5E-82-82-01
正解：C
Saitoh -
H12-261問題集には丁寧な解説がひたすら書いてあります。次はH12-221-ENUに挑戦していきたいと思います。