Huawei H31-161 Online Practice Questions and Exam Preparation

Huawei H31-161 Online Questions & Answers

• Question 11:

  RTA is a provider edge (PE) router. OSPF is deployed between RTA and a customer edge (CE). Which of the following can be used to avoid routing loops when RTA generate an autonomy system-external (ASE) link-state advertisement (LSA) and sends it to the CE?

  A. Configuring the same VPN route tag on the PE
  B. Configuring Shame Link among PEs
  C. Setting DN-bit in the ASE LSA
  D. Configuring the same domain ID on the PE
  C. Setting DN-bit in the ASE LSA
  D. Configuring the same domain ID on the PE

• Question 12:

  Refer to the exhibit.

  

  As shown in the figure, RTA belongs to AS 100 and has an EBGP neighbor relationship with RTB. RTB, RTC, RTD, RTE, and RTF belong to AS 200.RTB, RTD, and RTE are assigned to AS65001, RTC to AS65002, and RTF to AS65003.

  1.

  When route 1.1.1.1/32 is imported from RTA, what is the AS_Path attribute of this route to be advertised to RTF?

  2.

  When route 1.1.1.1/32 is imported from RTC, what is the AS_Path attribute of this route to be advertised to RTA?

  3.

  When route 1.1.1.1/32 is imported from RTC, what is the AS_Path attribute of this route to be advertised to RTE? The attributes are as follows:

  A. (65001) 100; 200; (65002)
  B. (65001) 200 100; (65002) (65001) 200; (65002)
  C. (65003) (65001) 200 100; 200; 200
  D. 100; 200; empty
  A. (65001) 100; 200; (65002)

• Question 13:

  As shown in the figure, a CE requires access to the internet , and PE 1is connected to the gateway. Configurations on PE 1 are as follows:

  PE 1 is connected to the internet gateway through interface 175.311.2 CE and CE 2 cannot ping the interface.

  Which of the following statements are true?

  A. NAT translation must be configured on interface pos2/1.0 instead of interface s0./01.0
  B. A private network route must be configured on the internet gateway.
  C. The public parameter of a static default route must be configured.
  D. A default must be configured on CE an CE 2.
  B. A private network route must be configured on the internet gateway.

• Question 14:

  All nodes in the topology belong to the same IGP area. They can learn routers from each other and have the TE capability. The tunnels configured below can be Up. Refer to the following configuration of RTA,Which of the following

  statements are true?

  #

  mpls lsr-id 1.1.1.1

  mpls

  mpls te

  mpls rsvp-te

  mpls te cspf

  #

  explicit-path pri-path

  next hop 3.1.1.2

  next hop 4.1.1.2

  next hop 5.1.1.2

  #

  explicit-path bypass-1

  next hop 2.1.1.2next hop 6.1.1.1

  #

  explicit-path bypass-2

  next hop 2.1.1.2

  next hop 7.1.1.2

  # explicit-path bypass-3 next hop 8.1.1.2

  next hop 9.1.1.2

  #

  interface Tunnel1/0/0

  ip address unnumbered interface LoopBack0

  tunnel-protocol mpls te

  destination 4.4.4.4

  mpls te tunnel-id 100

  mpls te record-route label

  mpls te path explicit-path pri-path mpls te fast-reroute mpls te commit # interface Tunnel2/0/0 ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 2.2.2.2 mpls te tunnel-id 101 mpls te record-route label mpls te path explicit-path bypass-1 mpls te bypass-tunnel mpls te protected-interface GigabitEthernet 3/0/0 mpls te commit # interface Tunnel2/0/1 ip address unnumbered interface LoopBack0

  tunnel-protocol mpls te destination 3.3.3.3 mpls te tunnel-id 102 mpls te record-route label mpls te path explicit-path bypass-2 mpls te bypass-tunnel mpls te protected-interface GigabitEthernet 3/0/0 mpls te commit # interface Tunnel2/0/2ip address unnumbered interface LoopBack0 tunnel-protocol mpls te destination 4.4.4.4 mpls te tunnel-id 103 mpls te record-route label mpls te path explicit-path bypass-3 mpls te bypass-tunnel mpls te protected-interface GigabitEthernet 3/0/0 mpls te commit #

  

  A. TE FRR link protection can be enabled on Tunnel2/0/0 to protect Tunnel1/0/0.
  B. TE FRR node protection can be enabled on Tunnel2/0/1 to protect Tunnel1/0/0.
  C. TE FRR node protection can be enabled on Tunnel2/0/2 to protect Tunnel1/0/0.
  D. TE FRR cannot be enabled on any tunnels.
  B. TE FRR node protection can be enabled on Tunnel2/0/1 to protect Tunnel1/0/0.

• Question 15:

  Refer to the exhibit.

  

  Which statement about Hub and Spoke MPLS VPN is false?

  A. If two Spoke sites are connected to the same Spoke PE, they must be assigned to different VPN instances to prevent them from exchanging routing information.
  B. The route of traffic from Spoke site 1 to Hub site 2: Traffic enters Hub site 3 through an interface under VPN1-Hub of the Hub PE and is then forwarded to Spoke site 2 through an interface under VPN1-Spoke of the Hub PE.
  C. The route of traffic from Spoke site 2 to Hub site 1: Traffic enters Hub site 3 through an interface under VPN1-Spoke of the Hub PE and is then forwarded to Spoke site 2 through an interface under VPN1-Hub of the Hub PE.
  D. The Hub PE can advertise aggregate Spoke site routes or default routes to Spoke PEs through VPNv4.
  E. vrf2
  F. vrf3
  G. vrf4
  H. None
  B. The route of traffic from Spoke site 1 to Hub site 2: Traffic enters Hub site 3 through an interface under VPN1-Hub of the Hub PE and is then forwarded to Spoke site 2 through an interface under VPN1-Spoke of the Hub PE.

• Question 16:

  Which of the following statements about LDP-IGP synchronization are true?

  A. The LDP-IGP synchronization means to postpone the route switchback until LDP completes convergence by suppressing the establishment of IGP neighbor relationships or setting the cost of route advertisement to the largest value.
  B. The LDP-IGP synchronization involves three timers: Hold-down, Hold-max-cost, and Syncachieved.
  C. The LDP and IGP synchronization involves four states: Init, Hold-down, Hold-max-cost, and Syncachieved.
  D. The LDP and IGP synchronization helps shorten the time for switching traffic from the standby link back to the active link and the switchback can be complete within several milliseconds.
  A. The LDP-IGP synchronization means to postpone the route switchback until LDP completes convergence by suppressing the establishment of IGP neighbor relationships or setting the cost of route advertisement to the largest value.
  C. The LDP and IGP synchronization involves four states: Init, Hold-down, Hold-max-cost, and Syncachieved.
  D. The LDP and IGP synchronization helps shorten the time for switching traffic from the standby link back to the active link and the switchback can be complete within several milliseconds.

• Question 17:

  Which of the following statements about the Dynamic Host Configuration Protocol (DHCP) snooping function are true?

  A. It prevents DHCP starvation attacks.
  B. It prevents fake DHCP server attacks.
  C. It prevents Mac Flood attacks.
  D. It prevents denial-of-service (Dos) attacks from changing the CHADDR value
  A. It prevents DHCP starvation attacks.
  B. It prevents fake DHCP server attacks.
  D. It prevents denial-of-service (Dos) attacks from changing the CHADDR value

• Question 18:

  The traffic classification behavior is configured to the single rate dual-bucket CAR in color- blind mode at the upstream interface of the router. Configurations are as follows: [Quidway]display traffic policy user-defined test User Defined Traffic Policy Information: Policy: test Statistic Enable Classifier: default-class Behavior: be -noneClassifier: test Behavior: test Committed Access Rate: CIR 400 (Kbit/s), PIR 0 (Kbit/s), CBS 100000 (byte), PBS 200000 (byte) Conform Action: pass Yellow Action: pass Exceed Action: discardIf the traffic on an interface matches the traffic policy, the traffic rate is 10,000 PPS and the packet frame length (including the CRC) is 125 bytes, which is the closest number of packets transmitted through the interface

  in the first one second?

  A. 400
  B. 2800
  C. 2000
  D. 1200
  B. 2800

• Question 19:

  Which of the following are conditions for bringing the remote CCC connection Up? (ABE)

  A. The interface that is bound to a CCC connection is physically Up.
  B. MPLS is enabled on the outbound interface of the public network.
  C. MPLS LDP is enabled on the outbound interface of the public network.
  D. If a next hop is specified in CCC configuration, a route to the next hop is available.
  E. If an outbound interface is specified in CCC configuration, the outbound interface is Up.
  A. The interface that is bound to a CCC connection is physically Up.
  B. MPLS is enabled on the outbound interface of the public network.
  E. If an outbound interface is specified in CCC configuration, the outbound interface is Up.

• Question 20:

  Exhibit.

  

  As shown in the figure, Super VLAN is enabled on SWA (a LAN switch). The Super VLAN configuration is as follows:

  

  Which of the following specifics the time order in which the preceding debugging information is generated?

  A. 3--4--1--2
  B. 1--2--3--4
  C. 1--4--2--3
  D. 3--2--1--4
  D. 3--2--1--4