Valid H12-831-ENU Test Answers & Huawei H12-831-ENU Exam PDF
Huawei H12-831-ENU Certification Real 2023 Mock Exam
NEW QUESTION 252
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 of an MPLS VPN is called the private network label, and the inner label is called the public network label.
- C. The outer label is used to correctly send the data packet to the corresponding VPN on the PE device.
- D. By default, the outer label is popped before the packet is forwarded to the last hop device.
Answer: B,C
NEW QUESTION 253
As shown in the figure, a sham link is established between PE1 and PE2 through the LoopBack0 interface. CE2 can learn the route of network segment 192.168.1.0/24 (the direct route on CE1) through the sham link and the backdoor link. If the default configuration is maintained, the cost of the route from CE2 to network segment 192.168.1.0/24 should be ( ). (Please fill in the Arabic numerals directly, without symbols)
- A. 4
Answer: A
NEW QUESTION 254
When OSPFv2 evolves to OSPFv3, the LSA format and function are exactly the same, except that the network layer address in the LSA changes from IPv4 to IPv6.
- A. True
- B. False
Answer: B
NEW QUESTION 255
BGP4+ carries the next hop address of the IPv6 route through the Next_Hop attribute in the Update packet.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 256
As shown in the figure, in a medium-sized network, in order to improve the reliability of RR, BGP generally deploys double R.
When deploying dual EE, the Cluster IDs of the two RRs are generally set to be the same. What is the reason for this?
- A. Prevent RR from receiving too many routes and causing insufficient memory
- B. Prevent the client from receiving too many routes and causing insufficient memory
- C. Prevent loops
- D. Prevent suboptimal
Answer: A
NEW QUESTION 257
Basic QinQ can choose the outer tag encapsulation method according to the business type.
- A. True
- B. False
Answer: B
NEW QUESTION 258
Which of the following functions will affect BGP neighbor establishment? (Multiple choice)
- A. ebgp max hop
- B. BGP Certification
- C. BGP GSTM
- D. BGP route filtering
Answer: A,B,C
NEW QUESTION 259
What are the situations in which packet loss may occur? (Multiple choice)
- A. Packet loss occurs in the queue
- B. Packet loss occurs during transmission
- C. It may be because the CPU is busy and cannot process packets, resulting in packet loss
- D. Packet loss occurs during reception
Answer: A,B,C
NEW QUESTION 260
OSPFv2 is an IGP running on an IPv4 network, OSPFV3 is an IGP running on an IPv6 network. The packet types of OSPFV3 and OSPFV2 are the same, including Hello packets, DD packets, LSU packets, LSU packets, and LSAck packets. Which of the following statements is true about OSPFv3 packets?
- A. The OSPFV3 Hello packet carries the IPv6 address prefix list of the router interface
- B. OSPFv3 uses IPv6 multicast address FF02
- C. OSPFv3 uses the link-local address as the source address of the outgoing packet. The packet can be forwarded outside the range of the originating link
- D. OSPFV3 uses the authentication field in the packet header to complete packet authentication
Answer: B
NEW QUESTION 261
OSPFv2 is an IGP that runs on IPv4 networks. OSPFV3 is an IGP running on IPv6 networks. Compared with OSPFv2, OSPFv3 has similar LSAs, but has slightly different functions.
The following is the description of the LSA function of OSPFV3, please drag the LSA to the correct LSA function column.
Answer:
Explanation:
NEW QUESTION 262
What is the meaning of ipv6 enable topology ipv6 in IS-IS protocol view?
- A. SPF calculation is performed separately in the topology of IPv4 and IPv6
- B. IPv4 and IPv6 use the same topology to perform SPF calculation
- C. has no meaning
- D. SPF calculation that does not support IPv6
Answer: A
NEW QUESTION 263
To ensure security, authentication can be configured in the OSPFv3 process area view.
- A. False
- B. True
Answer: B
NEW QUESTION 264
The LDP session is used to exchange messages such as label mapping and release between LSRs. Regarding the description of the LDP session establishment process, which of the following is correct? (Multiple choice)
- A. KeepAlive Messagel is used to monitor the integrity of the TCP connection of the LDP Session
- B. Two LSRs exchange Hello messages to trigger the establishment of an LDP session
- C. When the ingress node LSR receives the label mapping message, it completes the establishment of the LDP session
- D. Initialization Message is used to negotiate parameters during LDP Session establishment
Answer: A,D
NEW QUESTION 265
Senior engineers with rich experience can quickly solve faults only by experience with high efficiency.
- A. False
- B. True
Answer: B
NEW QUESTION 266
An engineer uses two routers to test IPV6 services, and simulates the interconnection between the headquarters and branches by running BGP4+.
The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between the two-way devices, which of the following statements is false?
- A. Route transmission will carry recognized mandatory attributes such as AS Path
- B. When routing is delivered, the Next Hop attribute must be an IPv6 global unicast address
- C. BGP4+ transmits routing information between peers through Update packets
- D. If the Update packet carries the AP REACH NLRI attribute, it means that the advertisement is a reachable route
Answer: B
NEW QUESTION 267
What are the advantages of PQ+WFQ? (Multiple choice)
- A. Implement bandwidth allocation by weight
- B. Realize the needs of flexible classification of packets according to user definition
- C. It can ensure the timely scheduling of low-latency services
- D. Messages with different priorities cannot be treated differently
Answer: A,C
NEW QUESTION 268
By viewing DHCP configuration information and packet statistics, you can view the running status of the device and the count of DHCP packets received and sent, so as to locate problems during routine maintenance. Which of the following commands can be used to view DHCP messages directly? (Multiple choice)
- A. display dhcp relay staitstics
- B. display dhcp server statistics
- C. display dhcp statistics
- D. display dhcp
Answer: A,B,C
NEW QUESTION 269
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