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質問 1：
The advanced access control list is a series of sequential rules composed of permit | deny statements. These rules can match IP packets according to which of the following attributes? (Multiple choice)
A. Destination port number
B. Source address
C. Destination address
D. Source port number
正解：A,B,C,D
質問 2：
In Huawei devices, when ISIS imports external routes and sets external route tags for routing information, the metric type of ISIS does not need to be modified, just keep the default.
A. False
B. True
正解：A
質問 3：
Which of the following is the correct description of the Register message in PIM-SM? (Multiple choice)
A. Register message is sent by the receiver router
B. Register message is sent by the source DR
C. Register message is sent to the RP by unicast instead of multicast.
D. Register message enables the RP to learn multicast source information.
正解：B,C,D
質問 4：
An OSPF protocol is running on a company network. An engineer wants to understand the OSPF mechanism to perform packet capture operations on the network, which of the following description about the OSPF packet is correct? (Multiple Choice)
A. Sending Hello packets immediately after the interface joins the OSPF area.
B. The LS Update message is sent only when the adjacency is established.
C. LS Update message synchronizes the link state database by sending detailed LSA information.
D. After receiving the LS Update message, the router must send LS Ack to confirm.
正解：A,C
質問 5：
If we configure a VPN instance on the router, if we need to view the VPN route on the Huawei router, which of the following commands should be used?
A. display
B. display ip routing-table vpn-instance vpn -instance-name
C. display vpn routing-table ip vpn-instance
D. display
正解：B
質問 6：
Regarding the processing mode of MPLS for TTL, which description is correct?
A. Uniform simulation, when the IP packet passes through the MPLS network, the IP TTL of the ingress node is decremented by 1, and the MPLS TTL field is a fixed value.
B. In MPLS VPN, if you want to hide the structure of the MPLS backbone network, you can use the uniform mode for Ingress packets for private network packets.
C. In Pipe mode, when an IP packet passes through the MPLS network, the IP TTL is decremented by 1 to the MPLS TTL field on the ingress node.
D. The TTL of the MPLS label has the same meaning as the TTL in the IP header, which can prevent the MPLS network from generating a routing loop
正解：D
The advanced access control list is a series of sequential rules composed of permit | deny statements. These rules can match IP packets according to which of the following attributes? (Multiple choice)
A. Destination port number
B. Source address
C. Destination address
D. Source port number
正解：A,B,C,D
質問 2：
In Huawei devices, when ISIS imports external routes and sets external route tags for routing information, the metric type of ISIS does not need to be modified, just keep the default.
A. False
B. True
正解：A
質問 3：
Which of the following is the correct description of the Register message in PIM-SM? (Multiple choice)
A. Register message is sent by the receiver router
B. Register message is sent by the source DR
C. Register message is sent to the RP by unicast instead of multicast.
D. Register message enables the RP to learn multicast source information.
正解：B,C,D
質問 4：
An OSPF protocol is running on a company network. An engineer wants to understand the OSPF mechanism to perform packet capture operations on the network, which of the following description about the OSPF packet is correct? (Multiple Choice)
A. Sending Hello packets immediately after the interface joins the OSPF area.
B. The LS Update message is sent only when the adjacency is established.
C. LS Update message synchronizes the link state database by sending detailed LSA information.
D. After receiving the LS Update message, the router must send LS Ack to confirm.
正解：A,C
質問 5：
If we configure a VPN instance on the router, if we need to view the VPN route on the Huawei router, which of the following commands should be used?
A. display
B. display ip routing-table vpn-instance vpn -instance-name
C. display vpn routing-table ip vpn-instance
D. display
正解：B
質問 6：
Regarding the processing mode of MPLS for TTL, which description is correct?
A. Uniform simulation, when the IP packet passes through the MPLS network, the IP TTL of the ingress node is decremented by 1, and the MPLS TTL field is a fixed value.
B. In MPLS VPN, if you want to hide the structure of the MPLS backbone network, you can use the uniform mode for Ingress packets for private network packets.
C. In Pipe mode, when an IP packet passes through the MPLS network, the IP TTL is decremented by 1 to the MPLS TTL field on the ingress node.
D. The TTL of the MPLS label has the same meaning as the TTL in the IP header, which can prevent the MPLS network from generating a routing loop
正解：D
金子** -
普段あんまり本を読む時間ないからPass4Testのこの問題集を購入して暗記しただけで、H12-261_V3.0-ENU試験に合格しました。