Huawei H31-161 Online Practice Questions and Exam Preparation

Huawei H31-161 Online Questions & Answers

• Question 151:

  Which of the following statements about the destination addresses of packets and the Router Alert option are true?

  A. The Path message carrying the Router Alert option is sent to the egress node.
  B. The Resv message carrying the Router Alert option is sent to the ingress node.
  C. The PathTear message without the Router Alert option is sent to the next hop.
  D. The ResvTear message without the Router Alert option is sent to the previous hop.
  A. The Path message carrying the Router Alert option is sent to the egress node.

• Question 152:

  Refer to the exhibit.

  

  As shown in the figure, CE 1 and CE 3 belong to VPN-A, and CE 2 and CE 4 belong to VPN-B. VPN-target of VPN-A is 111:1, and that of VPN-B is 222:2.Users on different VPNs are not allowed to access each other. Configuration principles are as follows:

  1.

  On the backbone network, if a PE is connected to a CE, VPN instances need to be configured on the PE, and an interface on the PE for connecting to the CE must be bound to a VPN instance. After binding an interface to a VPN instance, you must configure the IP address of the interface.Between PEs, IS-IS is configured for PE interworking, MPLS basic capabilities and MPLS LDP are configured for MPLS LSP establishment, and MP-IBGP is configured for VPN route exchange. LDP is short for Label Distribution Protocol, and IBGP is short for Interior Border Gateway Protocol.

  2.

  A CE exchanges VPN routes with a PE over External Border Gateway Protocol (EBGP). Which of the following configurations of PE 1 is incorrect?

  (A)

  (1)

  Configure Interior Gateway Protocol (IGP) on the IS-IS+MPLS backbone network to achieve the interworking between PEs and P routers. # Configure PE 1 as follows: [PE 1] isis 100 [PE 1-isis-100] is-level level-2 [PE 1-isis-100] network-entity 10.1234.1234.1234.00 [PE 1] interface loopback1 [PE 1-LoopBack1] ip address 1.1.1.9 32 [PE 1-LoopBack1] isis enable [PE 1-LoopBack1] quit [PE 1] interface pos3/0/0 [PE 1-Pos3/0/0] ip address 172.1.1.1 24 [PE 1-Pos3/0/0] isis enable [PE 1-Pos3/0/0] quit

  (2)

  Configure MPLS basic capabilities and MPLS LDP for setting up LDP LSPs on the IS- IS+MPLS backbone network. # Configure PE 1 as follows: [PE 1] mpls lsr-id 1.1.1.9 [PE 1] mpls [PE 1-mpls] lsp-trigger all [PE 1-mpls] quit [PE 1] mpls ldp [PE 1-mpls-ldp] quit [PE 1] interface pos 3/0/0 [PE 1-Pos3/0/0] mpls [PE 1-Pos3/0/0] mpls ldp [PE 1-Pos3/0/0] quit(3) Configure VPN instances on a PE for connecting CEs to the PE. # Configure PE 1 as follows: [PE 1] ip vpn-instance vpna [PE 1-vpn-instance-vpna] route-distinguisher 100:1 [PE 1-vpn-instance-vpna] vpn-target 111:1 both [PE 1-vpn-instance-vpna] quit [PE 1] ip vpn-instance vpnb [PE 1-vpn-instance-vpnb] route-distinguisher 100:2 [PE 1-vpn-instance-vpnb] vpn-target 222:2 both [PE 1-vpn-instance-vpnb] quit [PE 1] interface gigabitethernet 1/0/0 [PE 1-GigabitEthernet1/0/0] ip binding vpn-instance vpna [PE 1-GigabitEthernet1/0/0] ip address 10.1.1.2 24 [PE 1-GigabitEthernet1/0/0] quit [PE 1] interface gigabitethernet 2/0/0 [PE 1-GigabitEthernet2/0/0] ip binding vpn-instance vpnb [PE 1-GigabitEthernet2/0/0] ip address 10.2.1.2 24 [PE 1-GigabitEthernet2/0/0] quit

  (4)

  Set up an EBGP peer relationship between a PE and a CE and import VPN routes. # Configure PE 1 as follows: [PE 1] bgp 100 [PE 1-bgp] ipv4-family vpn-instance vpna [PE 1-bgp-vpna] peer 10.1.1.1 as-number 65410 [PE 1-bgp-vpna] import-route direct

  [PE 1-bgp-vpna] quit [PE 1-bgp] ipv4-family vpn-instance vpnb [PE 1-bgp-vpnb] peer 10.2.1.1 as-number 65420 [PE 1-bgp-vpnb] import-route direct [PE 1-bgp-vpnb] quit

  (5)

  Set up an MP-IBGP peer relationship between PEs. # Configure PE 1 as follows: [PE 1] bgp 100 [PE 1-bgp] peer 3.3.3.9 as-number 100 [PE 1-bgp] peer 3.3.3.9 connect-interface loopback 1 [PE 1-bgp] ipv4-family vpnv4 [PE 1-bgp-af-vpnv4] peer 3.3.3.9 enable [PE 1-bgp-af-vpnv4] quit

  A. Import BGP routes in IS-IS process 100
  B. Import BGP routes in IS-IS process 200
  C. Import IS-IS 200 routes in IS-IS process 100
  D. Import IS-IS 100 routes in IS-IS process 200c
  B. Import BGP routes in IS-IS process 200

• Question 153:

  As shown in the figure, RTA, RTB, and RTC use the OSPF protocol. The default cost value is used for links, and unicast routes converge on the entire network. The Loopback 0 interface is set to configure RTC as the RP or BSR. The SPT switching threshold uses the default value on RTB. The receiver joins the multicast group 225.1.1.1. The multicast source sends multicast data to the destination address 225.1.1.1. Which interface is the inbound interface in the (10.1.1.1, 225.1.1.1) entry on RTB?

  

  A. Ethernet 1/0/0
  B. Ethernet 1/0/1
  C. Ethernet 2/0/0
  D. Null
  A. Ethernet 1/0/0

• Question 154:

  Exhibit.

  

  As shown in the figure, one enterprise has VPN A, the other has VPN B, and the two VPNs each have two CEs. The following requirements needs to be met.

  VPNA-CA 1 can interwork with VPNA-CE 2

  2>VPNA-CE 1 can interwork with VPNA-CE 2.

  The figure shows the types of links between CEs and PEs and the IDs used in Martini mode. Which the following VC ID configurations are correct?

  A. VCID1 =1, VCID2 = 2, VCID3 =3, VCID4 +4
  B. VCID1 =2, VCID2 = 2, VCID3 =2, VCID4 +2
  C. VCID1 =1, VCID2 = 2, VCID3 =1, VCID4 +2
  D. VCID1 =1, VCID2 = 1, VCID3 =2, VCID4 +2
  A. VCID1 =1, VCID2 = 2, VCID3 =3, VCID4 +4

• Question 155:

  Which of the following statements about control words in the L2VPN are true?

  A. When SVC VLL is used, if PEs at two ends of a VC use different control words, the may not become Up.
  B. When Martini VLL is used, if PEs at two ends of a virtual connection (VC) use different control words, the VC may not become Up
  C. The control word can be used to identically the packet sequence.
  D. A control word generally has two bytes and can ne extended to four bytes.
  E. The control word can be used for packet padding For example, when the public network uses Ethernet and the AC uses Peer-to-protocol (PPP), control words can be used to transfer and identify PPP packet with a bytes.
  D. A control word generally has two bytes and can ne extended to four bytes.

• Question 156:

  As shown in the figure, the bearer network is deployed in full mesh mode. For example, RTA uses the physical interface ATM 1/0/0. The interface is devised into ATM 10/0.2 connect to RTC and RTD, respectively . The GigabiteEthernet 2/0/0 and GigabitEthernet 3/0/0 interface are used to set up a trunk as the VRRP heartbeat cable. The UMG work in active/standby mode. Media interface connected to RTA and RTB belong to VLAN 10. VRRP is enable at the VLAN interface RTA is the master router. The interface is configured as follows:

  

  Which of the following RTA configurations are correct in VLAN 10?

  

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

• Question 157:

  Which of the following operations will make a PE send notifications to its peer in PWE3?

  A. Shut down an AC interface
  B. Delete the L2VPN services from an interface
  C. Shut down a public network tunnel
  D. Disable MPLS
  A. Shut down an AC interface
  C. Shut down a public network tunnel
  D. Disable MPLS

• Question 158:

  Which statement is false?

  A. The SSM multicast forwarding model does not require shared trees.
  B. The SSM multicast provides a better access control scheme than the ASM multicast.
  C. The SSM Mapping function can map the IS_IN(S,G) message of the IGMPv3.
  D. The PIM SM simultaneously supports SSM multicast and ASM multicast
  C. The SSM Mapping function can map the IS_IN(S,G) message of the IGMPv3.

• Question 159:

  Which statement about the MPLS LSP Ping is true?

  A. The LSP Ping Echo request must contain the downstream mapping TLV
  B. A unique Sender's Handle is generated during each LSP Ping operation
  C. A unique sequence number is generated during each LSP Ping operation
  D. The LSP Ping Echo request may contain the FEC stack TLV
  B. A unique Sender's Handle is generated during each LSP Ping operation

• Question 160:

  Configurations are as follows: # multicast routing-enable # msdp peer 2.2.2.2 connect-interface loopback0 peer 3.3.3.3 connect-interface loopback0 import-source acl 3000

  peer 2.2.2.2 sa--policy import acl 3001 peer 3.3.3.3 sa--policy export acl 3002 # Interface loopback0 ip address 1.1.1.1 32 pim sm # acl 3000 rule 5 deny ip destination 230.0.0.1 0 source 30.0.0.1 0 rule 10 permit ip # acl 3001 rule 5 permit ip destination 231.0.0.1 0 source 30.0.0.1 0 # acl 3002 rule 5 permit ip destination 233.0.0.1 0 source 30.0.0.1 0 # Which statement is true?

  A. A router sends a locally generated (30.0.0.1, 230.0.0.1) SA message to its MSDP peer 2.2.2.2.
  B. A router sends a locally generated (30.0.0.1, 230.0.0.2) SA message to its MSDP peer 2.2.2.2.
  C. A router can receive a (30.0.0.1, 230.0.0.2) SA message from its MSDP peer 2.2.2.2.
  D. After receiving a (30.0.0.1, 230.0.0.1) SA message from its MSDP peer 2.2.2.2, a router forwards the message to its MSDP peer 3.3.3.3.
  B. A router sends a locally generated (30.0.0.1, 230.0.0.2) SA message to its MSDP peer 2.2.2.2.