最新なHuawei H12-831-ENU問題集（420題）、真実試験の問題を全部にカバー！

質問 1：
Regarding the site in the BGP/MPLS IP VPN network architecture. Which of the following descriptions is correct?
A. The two networks that are geographically separated must belong to different sites
B. Under no circumstances can different sites belonging to the same VPN use overlapping address spaces
C. A site is a group of IP systems, and a network composed of a host cannot be called a site
D. Terminals connected to the operator's network through the same C may belong to different sites (MCE)
正解：D

質問 2：
As shown in the figure, configure a backhaul summary route 10.0.0.0/24 on border route R1.

The next hop points to R2. At the same time, the default route to the external network is configured. At this point, routing black holes will appear. Which of the following statements about routing black holes is correct? (Multiple choice)
A. Configuring black hole routing can solve the routing black hole problem
B. Routing black hole has no effect on the network and can be ignored
C. Precise routing summary can avoid routing black hole
D. If the terminal in the network sends data packets to the network segment that does not appear on the internal network, a loop will occur
正解：A,C,D

質問 3：
The operation process for putting the equipment on the shelf is to prepare the tools first, then install the mounting ears, install the floating nuts and slides according to the site conditions, and finally install the equipment to the cabinet.
A. False
B. True
正解：B

質問 4：
In the DU label distribution mode, if the Liberal retention mode is adopted, the device will retain the labels distributed by all LDP peers, regardless of whether the LDP peer is the optimal next hop to the destination network segment.
A. TRUE
B. FALSE
正解：A

質問 5：
The session-based stateful inspection firewall has different processing flows for the first packet and subsequent packets. Which of the descriptions of the flow is correct? (Multiple choice)
A. When the state check mechanism is turned on, subsequent packets also need to be checked for security policies.
B. When the stateful inspection mechanism is enabled, when the firewall processes TCP packets, only SYN packets can establish a session.
C. When a packet arrives at the firewall, it will look up the session table. If there is no match, the firewall will process the first packet.
D. When the packet reaches the firewall, it will look up the session table, and if it matches the firewall, the subsequent packet processing process will be performed.
正解：B,C,D

質問 6：
In the label forwarding table of the MPLS device, for different routes (the next hop is also different), the label is sent out:
A. must be different
B. may be the same
C. must be the same
正解：A

質問 7：
Link LSA of OSPFv3 are propagated throughout the area.
A. False
B. True
正解：A

質問 8：
In the MPLS VPN network, when the data packet enters the public network and is forwarded, it will be encapsulated with two layers of MPLS labels. Which of the following description about the two layers of labels is wrong? (Multiple choice)
A. The outer label of MPLS VPN is assigned by LDP protocol or statically, and the inner label is assigned by the IP BGP neighbor of the opposite end.
B. The outer label is used to correctly send the data packet to the corresponding VPN on the PE device.
C. The outer label of an MPLS VPN is called the private network label, and the inner label is called the public network label.
D. By default, the outer label is popped before the packet is forwarded to the last hop device.
正解：B,C