H31-161 by Huawei Actual Free Exam Questions And Answers

Question 1

As shown in the figure, RTA, RTB, RTC are interconnected over IS-IS, RTA, RTD, RTE, and RTC are interconnected over OSPF. Both IS-IS and OSPF use the default costs. RSVPTE is enabled on all routers and the interfaces between these routers. The Loopback0 interface of RTC is 192.168.0.3/32 and is advertised in both OSPF and ISIS areas. 192.168.0.3/32 is also the LSR ID of MPLS. Configurations of the MPLS and tunnel on RTA:
#
mpls lsr-id 192.168.0.1
mpls
mpls te
mpls rsvp-te
mpls te cspf
interface Tunnel1/0/0
tunnel-protocol mpls te
destination 192.168.0.3
mpls te tunnel-id 1
mpls te path metric-type igp
mpls te igp metric absolute 1
mpls te commit
#
Which path will be selected when the tunnel becomes Up? What is the metric of this tunnel?

A. RTA-RTD-RTE-RTC; 3

B. RTA-RTB-RTC; 20

C. RTA-RTB-RTC; 1

D. RTA-RTD-RTE-RTC; 1

Discussion 0

Correct Answer: D Vote an answer

Question 2

Which of the following methods can be used to ensure loop-free and reachable Martini VPLS links?

A. Poison reverse

B. Split horizon

C. Full-meshed PEs

D. Spanning tree algorithm

Discussion 0

Correct Answer: B,C Vote an answer

Question 3

Exhibit:

RTA is an edge router of the MPLS backbone network. It provides the access services for users under Layer 2 switches and different users by subinterface . User A access VLAN 12 and has subscribed to the His, VoIP, and IPTV services. According to 802 1p priorities, the value indicates the His service, 1 indicates the VoIp service, and 4 indicates the IPTV service. RTA is configured on he access side as follows.

What is the descending order of service priorities?

A. IPTV, VoIP, HSI

B. VoIP, IPTV, HSI

C. HSI, IPTV, VoIP

D. HSI, VoIP, IPTV

Discussion 0

Correct Answer: C Vote an answer

Question 4

Which statement describes the packet loss ratio requirement of the voice service for the IP bearer network?

A. No strict requirement

B. Allowed maximum packet loss =1%

C. Allowed maximum packet loss =1%

D. Allowed maximum packet loss =10-6

Discussion 0

Correct Answer: B Vote an answer

Question 5

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

A. The control word can be used to identically the packet sequence.

B. A control word generally has two bytes and can ne extended to four bytes.

C. When SVC VLL is used, if PEs at two ends of a VC use different control words, the may not become Up.

D. 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.

E. 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

Discussion 0

Correct Answer: B Vote an answer

Question 6

As shown in the figure, CEs connect to users 1 and 2 through access
interfaces or links.
[Quidway-GigabitEthernet1/0/4]portswitch
[Quidway-GigabitEthernet1/0/4]port link-type access
[Quidway-GigabitEthernet1/0/4]port default vlan 1
[Quidway-GigabitEthernet1/0/6]portswitch
[Quidway-GigabitEthernet1/0/6]port link-type access
[Quidway-GigabitEthernet1/0/6]port default vlan 2
[Quidway-GigabitEthernet1/0/3]portswitch
[Quidway-GigabitEthernet1/0/3]port link-type trunk
[Quidway-GigabitEthernet1/0/3]port trunk permit-pass vlan 1 to 2
Users 1 and 2 require different network transmission quality. Which of the following methods are feasible to configure 802.1p priority 1 for packets of user 1 and 802.1p priority 2 for packets of user
2?

A. On a PE, configure Dot1q tunnel interfaces and simple traffic classification (STC) for interfaces on the private network.

B. On a PE, configure vlan-stacking and STC for interfaces on the private network for users 1 and 2.

C. On a PE, configure vlan-mapping and STC for interfaces on the private network for users 1 and 2.

D. On a CE, configure STC for user VLANs on the user access side.

Discussion 0

Correct Answer: B,C Vote an answer

Question 7

[Quidway]multicast routing-enable
[Quidway]interface Ethernet10/1/0
[Quidway-Ethernet10/1/0]igmp enable
[Quidway-Ethernet10/1/0]igmp robust-count 4
[Quidway-Ethernet10/1/0]quit
[Quidway]igmp
[Quidway-igmp]timer query 100
[Quidway-igmp]robust-count 3
The default IGMP query interval is 60s and the default query response interval is 10s. If Ethernet 10/1/0 receives an IGMP Report message, how long is the timeout interval for creating a group record?

A. 310s

B. 410s

C. 250s

D. 130s

Discussion 0

Correct Answer: B Vote an answer

Question 8

In PIM-DM, which of the following scenarios about sending Join messages is true?

A. The intermediate router receives graft messages from the downstream router when all downstream interfaces of the intermediate router are in the prune state.

B. The router receives prune messages of the RPF neighbor from other routers when it is receiving data from the upstream.

C. The leaf router in the idle state receives host Join messages.

D. The router receives state-refresh messages.

Discussion 0

Correct Answer: B Vote an answer

Question 9

BFD for RSVP is a mechanism that uses BFD to check the connectivity of RSVP neighbors. As shown in the figure, TE FRR node protection is deployed to protect a node, the blue path is the primary LSP (RTA -> RTB -> RTC -> RTD -> RTE) and the red one is the bypass LSP (RTB -> RTF -> RTD). Which of the following statements about BFD for RSVP are true?

A. The BFD session triggered by RSVP is for the exclusive use of RSVP.

B. Only RSVP HELLO needs to be enabled if RSVP GR instead of TE FRR is deployed on a network.

C. TE FRR will be triggered only when the link between RTB (acting as the PLR) and RTC (the node under protection) is faulty or RTC is faulty but will not be triggered when the link between RTC and RTD (acting as the MP) is faulty. This problem can be solved by establishing a BFD session between RTB and RTD. In this case, faults may be reported falsely or be missed.

D. BFD for RSVP needs to be enabled only on RTB if you expect to set up a BFD for RSVP session on RTB to check the connectivity between RTB and RTC.

Discussion 0

Correct Answer: C Vote an answer

Question 10

When the RSVP LSP FRR protection is enables, which of the following statements about the original RSVP LSP are true?

A. The PATH message is sent by the PLR to the MP through a bypass LSP after modified.

B. The MP sends the ResvTear message to the upstream node of the original RSVP LSP.

C. The point of local repair (PLR) and the merge point (MP) can perceive the application of FRR but other nodes on the original RSVP LSP

D. The RESV message is sent by the MP to an upstream node through a bypass LSP after modified.

Discussion 0

Correct Answer: B,D Vote an answer

Question 11

Winch functions docs the beater network NMS mainly provide?

A. Switchover tune of a device's active/standby system

B. Packet delay

C. Monitoring network traffic

D. Monitoring device load(CPU and Memory)

Discussion 0

Correct Answer: D Vote an answer

Question 12

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. 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.

B. When RTA receives a Type 3 summary LSA with the DN bit in area 1, it ignores the calculation of the LSA.

C. Bit B is not set in the router LSA generated by RTA in 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.

Discussion 0

Correct Answer: A,B,D Vote an answer

Huawei HCIE-Carrier IP (Written) - H31-161 Exam Practice Test

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