Huawei H31-161 Online Practice Questions and Exam Preparation

Huawei H31-161 Online Questions & Answers

• Question 61:

  Refer to the exhibit.

  

  OSPF process 1 is started on RTA and assigned to the vpn1 instance.

  After the vpn-instance-capability simple command is configured in the OSPF view, which of the following statements are false?

  A. Bit B is not set in the router LSA generated by RTA in area 1.
  B. When RTA receives a Type 3 summary LSA with the DN bit in area 1, it ignores the calculation of the LSA.
  C. After RTA imports a BGP route from the MPLS VPN backbone network, if Domain ID of the BGP route is the same as that used in the local OSPF area and the BGP route is an intra-area route, a Type 3 summary LSA is generated and flooded to area 1.
  D. When RTA imports a BGP route from OSPF process 1, an extended community identification must be carried to specify the OSPF attributes of the route.
  B. When RTA receives a Type 3 summary LSA with the DN bit in area 1, it ignores the calculation of the LSA.
  C. After RTA imports a BGP route from the MPLS VPN backbone network, if Domain ID of the BGP route is the same as that used in the local OSPF area and the BGP route is an intra-area route, a Type 3 summary LSA is generated and flooded to area 1.
  D. When RTA imports a BGP route from OSPF process 1, an extended community identification must be carried to specify the OSPF attributes of the route.

• Question 62:

  Which statement about the configuration of route target (RT) and route distinguisher (RD) is true?

  A. If routes need to exchange between two VPNs, the value of import RT of one VPN must be partially the same as Export RT of the other VPN.
  B. RD and RT of a VPN instance cannot be the same as those of another VPN instance on the same PE.
  C. If routers need to exchanged two VPNs, the value of import RT of one of the same as that of RT of the other VPN.
  D. Two instances of a VPN share an RT.
  A. If routes need to exchange between two VPNs, the value of import RT of one VPN must be partially the same as Export RT of the other VPN.

• Question 63:

  Interface Ethernet 3/1/0 is configured as follows:

  

  Ethernet 3/1/0 receives multicast group 232 0.0.31 IGMFV2 Report messages, If no multicast traffic sent to group 232.0.31 can be detected on Ethernet 3/1/0, which of the following causes may be true?

  A. The TTL value is less than 20 in data messages sent to group 232.0.0.31.
  B. Ethernet 3/1/0 does not function as a PIM DR
  C. The multicast border of group 232 0.0.31 is configured on Ethernet 3/1/0.
  D. SSM mapping is not configured for group 232 0 0 31.
  A. The TTL value is less than 20 in data messages sent to group 232.0.0.31.
  B. Ethernet 3/1/0 does not function as a PIM DR
  D. SSM mapping is not configured for group 232 0 0 31.

• Question 64:

  In the VRP, which of the following authentication modes are supported by the secure shell (SSH)?

  A. password
  B. Rivest-Shamir-Adleman (RSA)
  C. password-rsa
  D. md5
  A. password
  B. Rivest-Shamir-Adleman (RSA)
  C. password-rsa

• Question 65:

  On the typical access network of a bearer network, a core network device connects to two upstream CEs. CEs connect to PEs in a square shape. This access network must bear voice and signaling services. A CE must be configured with two VPNs to separate the voice and signaling services and ensure high security and QoS. The signaling service works in active/standby mode, and the voice service works in load sharing mode. The VRRP must be enabled between the CEs to terminate the signaling flow. If the network robustness is ensured and the network architecture is rational, which of the following statements about the topological structure are true?

  A. The voice service must be carried by GE links and the signaling service must be carried by FE links.
  B. Instead of POS links, GE links are recommended between CEs and PEs.
  C. The total link bandwidth between CEs cannot be less than that between CEs and PEs.
  D. GE and FE links need to be used as the Eth-trunk between CEs to improve reliability.
  A. The voice service must be carried by GE links and the signaling service must be carried by FE links.
  B. Instead of POS links, GE links are recommended between CEs and PEs.
  C. The total link bandwidth between CEs cannot be less than that between CEs and PEs.

• Question 66:

  Exhibit.

  

  RTA is an edge route of the MPLS backbone network. It provides the access for users under layer 2 switches and differentiates user by subinterface. User access VALN 100 and has subscribed to the His ViIP , and services. According to 802 1p priorities, the value 0 indicates the HIS service, 1 indicates the VoIp service and 4 indicate the IPTV service. The DiffSerc model is deployed in E-LSP mode on the MPLS network,

  And the STC is configured for subinterface on the access side of RTA (the qos phb disable command is not configured). Outgoing on the traffic on the G1/0/0.1 suninterface involves the His VoIP, and services on the access side of RTA. Which statements about EXP about values corresponding to these three services is true?

  A. At least three EXP values be contained, and the values are uncertain.
  B. Only two EXP values be contains, and the values are certain.
  C. The EXP values must be 0, 1, and 4.
  D. Only one EXP may be contained, and the value is uncertain
  A. At least three EXP values be contained, and the values are uncertain.

• Question 67:

  A gold user and a common user access a carrier network through the MPLS Layer 3 VPN. On the entire MPLS network (from PE to PE), the carrier performs queue scheduling for the gold user by trusting the IP priority of the user and for the common user by using the carrier's own operation policy. Which of the following is the tunnel mode of the MPLS differentiated service for the gold user and common user, respectively?

  A. pipe; short pipe
  B. short pipe; pipe
  C. uniform; pipe
  D. uniform; short pipe
  D. uniform; short pipe

• Question 68:

  Which of the following statements about TE FRR in forwarding adjacency (FA) mode and TE FRR in IGP Shortcut mode are true?

  A. When TE FRR in FA mode is enabled, nodes except the node on which FA is configured can sense the TE tunnel interface. When the primary tunnel link becomes faulty, the PLR switches traffic to the bypass tunnel through protection switching. The upstream node assumes the TE tunnel link is normal and therefore it continues traffic forwarding. In this case, the route does not change and an FRR is not triggered.
  B. When TE FRR in FA mode is enabled, nodes except the node on which FA is configured can sense the TE tunnel interface. When the primary tunnel link becomes faulty, the PLR switches traffic to the bypass tunnel through protection switching. The upstream node assumes the TE tunnel link changes and therefore it triggers an FRR.
  C. When TE FRR in IGP Shortcut mode is enabled, nodes except the node on which FA is configured cannot sense the TE tunnel interface. When the primary tunnel link becomes faulty, the PLR switches traffic to the bypass tunnel through protection switching. On the PLR, traffic is still forwarded through the bypass tunnel. The upstream node of the PLR cannot sense the TE tunnel interface and does not trigger an FRR.
  D. When TE FRR in IGP Shortcut mode is enabled, nodes except the node on which FA is configured cannot sense the TE tunnel interface. When the primary tunnel link becomes faulty, the PLR switches traffic to the bypass tunnel through protection switching. Though the upstream node of the PLR cannot sense the TE tunnel interface, IGP can sense the faulty link. Therefore, the upstream node triggers an FRR.
  A. When TE FRR in FA mode is enabled, nodes except the node on which FA is configured can sense the TE tunnel interface. When the primary tunnel link becomes faulty, the PLR switches traffic to the bypass tunnel through protection switching. The upstream node assumes the TE tunnel link is normal and therefore it continues traffic forwarding. In this case, the route does not change and an FRR is not triggered.
  D. When TE FRR in IGP Shortcut mode is enabled, nodes except the node on which FA is configured cannot sense the TE tunnel interface. When the primary tunnel link becomes faulty, the PLR switches traffic to the bypass tunnel through protection switching. Though the upstream node of the PLR cannot sense the TE tunnel interface, IGP can sense the faulty link. Therefore, the upstream node triggers an FRR.

• Question 69:

  As shown in the figure, the costs of paths from RTA to RT 11, RT 12, RT 13, RT 14, and RT 15 are all 10 and the available bandwidth is 200 Mbit/s.

  The costs of paths from RTB to RT 31, RT 32, RT 33, RT 34, and RT 35 are all 10 and the available bandwidth is 200 Mbit/s.

  The costs of paths from RT 11 to RT 21 and from RT 21 to RT 31 are both 5. The available bandwidth is 200 Mbit/s.

  The cost of the path from RT 12 to RT 32 is 5 and the available bandwidth is 120 Mbit/s. The cost of the path from RT 13 to RT 33 is 10 and the available bandwidth is 80 Mbit/s.

  The cost of the path from RT 14 to RT 34 is 10 and the available bandwidth is 100 Mbit/s.

  The cost of the path from RT 15 to RT 35 is 10 and the available bandwidth is 100 Mbit/s.

  The load balancing rule of Constraint Shortest Path First (CSPF) is set to Random on RTA.

  Which path will a 100 Mbit/s tunnel from RTA to RTB take?

  A. RTA-RT11-RT21-RT31-RTB
  B. RTA-RT12-RT32-RTB
  C. RTA-RT13-RT33-RTB
  D. RTA-RT14-RT34-RTB
  E. RTA-RT15-RT35-RTB
  D. RTA-RT14-RT34-RTB
  E. RTA-RT15-RT35-RTB

• Question 70:

  An IPTV bearer network requires the broadband TV (BTV), VOD, and near video on demand (NVOD) services. Video programs use the standard MPEG 4 codec format. Which of the following statements about the QoS policy are true?

  A. To ensure the IPTV service quality on the user side, reserve 4 Mbit/s bandwidth for the IPTV service for each user and plan extra bandwidth for the broadband Internet service.
  B. To ensure the IPTV service quality on the user side, reserve 2.5 Mbit/s bandwidth for the IPTV service for each user and plan extra bandwidth for the broadband Internet service.
  C. Ensure that the BTV service has a higher priority than the VOD/NVOD service, and forward the downstream traffic and some protocol packets, such as the IGMP and PIM packets in priority.
  D. Ensure that the VOD/NVOD service has a higher priority than the BTV service and guarantee QoS of both the upstream and downstream traffic.
  B. To ensure the IPTV service quality on the user side, reserve 2.5 Mbit/s bandwidth for the IPTV service for each user and plan extra bandwidth for the broadband Internet service.
  C. Ensure that the BTV service has a higher priority than the VOD/NVOD service, and forward the downstream traffic and some protocol packets, such as the IGMP and PIM packets in priority.