Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - H12-831_V1.0-ENU FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

OSPFv3 packets are encapsulated in IPv6 packets. Which of the following is the value of the Next Header field in the IPv6 packet header?
Options:

A. 6 B. 89 C. 17 D. 189

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Correct Answer: B Vote an answer

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Question 2

OSPF requires that routers in the same area have the same link state database (LSDB). As the number of routes on the network increases, some routers cannot carry so much routing information due to limited system resources. This state is called database overflow. If the Isdb-overflow-limit number 7 command is run on all routers on an OSPF network, which of the following conditions are likely to cause routers to enter the overflow state?

A. The number of Type 4 LSAs exceeds 7. B. The number of Type 5 LSAs exceeds 7. C. The number of Type 3 LSAs exceeds 7. D. The number of Type 7 LSAs exceeds 7.

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Correct Answer: B Vote an answer

Question 3

On the OSPF network shown in the figure, the cost values of links are marked. IS-IS Auto FRR is enabled on R1. The primary path from R1 to 10.0.3.3/32 is R1 # R2 # R3, and the backup path is R1 # R4 # R2 # R3.
Is this statement TRUE or FALSE?

A. FALSE B. TRUE

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Correct Answer: A Vote an answer

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Question 4

Which of the following symptoms may accompany a Layer 2 loop occurring on a network?

A. The interface bandwidth usage is excessively high. B. The service port indicator blinks frequently. C. Login to the device fails or the device responds slowly upon a login. D. The CPU usage is excessively high.

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Correct Answer: A,B,C,D Vote an answer

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Question 5

On the OSPF network shown in the figure, the cost values of links are marked. OSPF IP FRR is enabled on R1, and the maximum load-balancing 8 command is configured in the OSPF process. Which of the following is the cost value of the route 10.0.35.0/24 in the routing table of R1?

A. 20 B. 10 C. 40 D. 30

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Correct Answer: A Vote an answer

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Question 6

On the OSPF network shown in the figure:
* Area 1 is a common area.
* Area 2 is a totally NSSA (Not-So-Stubby Area).
* Area 3 is an NSSA.
* R5 imports the external route 10.0.5.5/32 into OSPF.
Which of the following routers have the route 10.0.5.5/32 in their routing tables?

A. R4 B. R6 C. R2 D. R3

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Correct Answer: B,C,D Vote an answer

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Question 7

On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RRs (Route Reflectors), and R1, R4, R3, and R6 are clients. The iBGP peer relationships are established using Loopback0 on each router, and the router ID is 10.0.0.X/32, where X is the number of the router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import- route command. Which of the following statements are true?

A. The route 192.168.1.0/24 in the routing table of R3 has two next hops. B. The routing table of R1 does not contain the route 192.168.2.0/24. C. The routing table of R4 contains two equal-cost default routes. D. For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2, and R6 preferentially selects the BGP route received from R5.

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Correct Answer: A,D Vote an answer

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Question 8

VPN traffic transmitted on a typical BGP/MPLS IP VPN network typically contains two labels. Which of the following statements are false about the two labels?

A. The inner label is distributed by MP-BGP. The remote CE transmits the inner label to the local CE through BGP Update packets. B. Both inner and outer labels are distributed by LDP for end-to-end transmission of VPN traffic. C. The outer label is distributed by LDP. If PHP is enabled, the VPN traffic received by the egress PE carries only the inner label distributed by MP-BGP. D. The outer label is distributed by MP-BGP to instruct the remote PE to find the corresponding CE.

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Correct Answer: A,B,D Vote an answer

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Question 9

A network device has established an OSPF neighbor relationship with another device. The figure shows the configuration of GE0/0/0 on the network device.

Which of the following commands would NOT affect the OSPF neighbor status of the interface?

A. undo ospf dr-priority B. undo description C. undo ip address 10.0.12.2 24 D. undo ospf cost

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Correct Answer: B Vote an answer

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Question 10

Which of the following statements are true about OSPFv3 Link-LSAs and Intra-Area-Prefix-LSAs?

A. Each device generates an Intra-Area-Prefix-LSA for each link. B. A Link-LSA describes the link-local address and IPv6 prefix address on the link. C. The prefix information described by the Intra-Area-Prefix-LSA is associated with the Router-LSA or Network-LSA. D. Each device generates a Link-LSA for each link.

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Correct Answer: B,C,D Vote an answer

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Question 11

Service routes of an enterprise are transmitted on the network. Some configurations of PE1 and PE2 are shown in the figure. Which of the following LSAs may CE2 receive?

A. Type 7 LSA B. Type 3 LSA C. Type 5 LSA D. Type 1 LSA

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Correct Answer: B,D Vote an answer

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Question 12

The figure shows the logical network architecture of a migration project. The purpose of the migration is to enable terminals in different geographical locations to communicate with each other and deploy the gateway of the terminals on the PE routers.
After the migration is complete, which of the following methods can be used by network engineers to preliminarily check the network connectivity?

Options:

A. On PE1 and PE2, checking whether there are routes to each other's network segment in the routing tables. B. On PE1 and PE2, checking whether the ARP table contains the ARP entry of the peer network segment. C. Configuring NQA on PE1 and PE2, with the destination address being the IP address of each other. D. On PE1, using 192.168.1.1 as the source address to ping 192.168.2.1.

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Correct Answer: A,C,D Vote an answer

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