Download HCIE-R&S (Written) (Huawei Certified Internetwork Expert-Routing & Switching).H12-261.VCEplus.2025-03-30.171q.tqb

Vendor: Huawei
Exam Code: H12-261
Exam Name: HCIE-R&S (Written) (Huawei Certified Internetwork Expert-Routing & Switching)
Date: Mar 30, 2025
File Size: 6 MB
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Demo Questions

Question 1
You are assigned the task of compressing an IPv6 address as much as possible. If the original IPv6 address is 2013:0000:130F:0000:0000:09C0:876A:130B, which of the following is the IPv6 address in its compressed format?
  1. 213::13F::9C0:876A:13B
  2. 2013::130F::09C0:876A:130B
  3. 2013:130F:0:0:9C0:876A:130B
  4. 2013:0:130F:0:0:09C0:876A:130B
  5. 2013:0:130F::09C0:876A:130B
Correct answer: E
Question 2
Assuming three routers (A, B, and C) uses BGP as the routing protocol. A sends Update packets to B and B sends the Update packets toC. 
Which of the following attributes meet the following two conditions?
(1) A can select whether to carry this attribute in Update packets.
(2) If B receives an Update packet carrying this attribute, B still advertises the Update packet to C although B cannot identify this attribute. 
Then, Router C may identify and use this attribute.
  1. Multi_Exit_Disc 
  2. Local_Pref
  3. Community
  4. Aggregator
Correct answer: CD
Question 3
Which of the following statements regarding deploying IS-IS in an IPv6 environment is true?
  1. On a broadcast network, the IPv4 DIS priority and IPv6 DIS priority can be set, respectively.
  2. If the isis silent command is run on an IS-IS interface, the interface does not send but receives IS-IS packets.
  3. On a broadcast network, if each router supports both IPv4 and IPv6, the IPv4 DIS and IPv6 DIS must be the same device.
  4. By default, the DIS priority of Level-1 and Level-2 broadcast interfaces is 1.
Correct answer: A
Question 4
Which of the following statements regarding MP-BGP is false?
  1. The MP_UNREACH_NLRI attribute of Update packets does not contain path information
  2. MP_REACH_NLRI and MP_UNREACH_NLRI are optional transitive attributes
  3. The complete MP_REACH_NLRI attribute structure contains the address family, next hop, and prefix information
  4. MP-BGP can be used to allocate labels
Correct answer: B
Question 5
Which of the following statements regarding OSPFv3 LSAs are true?
  1. The Link State ID of an Inter-Area-Prefix-LSA contains prefix information
  2. Router-LSAs and Network-LSAs do not contain routing information
  3. Inter-Area-Prefix-LSAs contain link-local information
  4. When the Referenced Link State Type of an Intra-Area-Prefix-LSA is 2, the Referenced Link State ID contains the interface ID of the DR
Correct answer: D
Question 6
When a Layer 3 switch forwards IP packets between locally attached VLANs, which of the following fields is rewritten?
  1. Layer 2 TTL
  2. Layer 3 transport protocol
  3. Layer 3 destination IP address 
  4. Layer 3 source IP address
  5. Layer 3 TTL
Correct answer: E
Question 7
Which of the following statements regarding the packet processing method in the MPLS network model are false?
  1. The device discards IP packets that enter the MPLS domain.
  2. An LSR does not remove any label.
  3. A Label Switched Path (LSP) is determined and established through various protocols during the packet forwarding process.
  4. Both LERs and LSRs distribute labels.
Correct answer: A
Question 8
On an intra-AS MPLS BGP VPN, data packets are encapsulated with two MPLS labels before being sent to the public network. 
Which of the following statements regarding the labels is false?
  1. By default, a router assigns the same label value to all VPNv4 routes destined for the remote PE.
  2. The egress PE uses the inner label to determine the egress CE which packets are sent.
  3. Two labels are used on an MPLS BGP VPN: public network label (outer label) and VPN label (inner label).
  4. VPN labels are distributed by MP-BGP when routing information is transmitted. Public network labels are distributed by LDP.
Correct answer: A
Question 9
As shown in the figure below, an enterprise wants to implement secure access between the headquarters and branches through MPLS VPN. VPN traffic of branches must be forwarded through the headquarters for traffic monitoring. Which of the following statements regarding this solution is false?
 
  1. When the Hub-CE and Hub-PE use EBGP to transmit routing information, the Hub-PE must be able to accept routes with the AS number repeated once so that routes advertised by the Hub-CE can be received.
  2. OSPF can be used to exchange routing information between Hub-CEs and Hub-Pes as well as between Spoke-Pes and Spoke-CEs.
  3. BGP can be used to exchange VPN routing information between CEs and Pes.
  4. The MP-IBGP peer relationship can be established between Spoke-Pes to exchange VPN routing information.
Correct answer: A
Question 10
Which of the following statements regarding the inter-AS MPLS VPN are false?
  1. In inter-AS VPN Option B mode, an MP-EBGP peer relationship needs to be established between two ASBRS.
  2. In inter-AS VPN Option B mode, two ASBR-Pes are interconnected through multiple interfaces (including sub-interfaces), each interface is associated with one VPN, and each ASBR-PE considers the remote device as a CE.
  3. In inter-AS VPN Option A mode, the routes advertised between two ASBRs are common IPv4 routes.
  4. In inter-AS VPN Option C solution 2, if only LDP is used to advertise public network labels, three labels need to be used during packet forwarding.
Correct answer: D
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