H31-161 Exam Questions Get Updated [2022] with Correct Answers
Practice H31-161 Questions With Certification guide Q&A from Training Expert Free4Torrent
NEW QUESTION 63
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. GE and FE links need to be used as the Eth-trunk between CEs to improve reliability.
- 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. The voice service must be carried by GE links and the signaling service must be carried by FE links.
Answer: B,C,D
NEW QUESTION 64
- A. Only one EXP value may be contained, and the value is uncertain.
- B. Which statement about EXP values corresponding to these three services is true?
- C. At least three EXP values may be contained, and the values are uncertain.
- D. Only two EXP values may be contained, and the values are uncertain.
- E. The EXP values must be 0, 1, and 4.
Answer: C
NEW QUESTION 65
The inner VLAN tag in layer 2 user packets is used to differentiated key services from other services. If
packets are not processed after being encapsulated by QinQ, the 802. 1p information of the inner VLAN tag
becomes invalid. After the QinQ is employed, three methods can be used to configure conditions for sensing
8021pconfiguration of the inner VLANtag:
1. Reset the 802.1p of the outer VLAN tag regardless of the existing 02 1p configurations of the inner VLAN
tag.
2. Automatically swap the 802. 1p configurations of the inner VLAN tag to that of the outer VLAN tag.
3. Reset the 802.1p configurations of the outer VLAN tag based on the existing 802.1p configurations of the
different VLAN tags
- A. False
- B. True
Answer: B
NEW QUESTION 66
Which functions does the bearer network NMS mainly provide?
- A. Switchover time of a device's active/standby system
- B. Packet loss delay
- C. Monitoring network traffic
- D. Monitoring device load(CPU and Memory)
Answer: B,C,D
NEW QUESTION 67
Which statement is false?
- A. The SSM multicast forwarding model considers an (S,G) entry as one channel.
- B. The ASM multicast forwarding model does not allow the receiver to specify a multicast source.
- C. The PIM SSM multicast routing protocol cannot set up shared multicast forwarding trees.
- D. The IGMP SSM Mapping function is to map a (*,G) Join message reported by the host to an (S,G) Join messag
Answer: D
NEW QUESTION 68
Exhibit.
Which statement about inter-AS MPLS VPN Option_B is false?
- A. When ASBRs are directly connected, packets transmitted on the VPN between them have only one
label. - B. The ASBR cannot be used as a PE simultaneously and a CE cannot be connected to an ASBR.
- C. When ASBRs are directly connected, VPN traffic can be forwarder between them only after MPLS is
enabled on the interfaces. - D. The undo policy vpn-target command must be configured in the VPN4 address family view of the BGP
neighbor of the ASBR to prevent routes from being filtered automatically.
Answer: D
NEW QUESTION 69
The Huawei router is the last hop DR where the SSM Mapping function is enabled at the interface.
Some IGMPv2 hosts expect to receive (1.0.0.1, 232.1.0.1), (1.0.0.1, 232.1.0.2), and (2.0.0.1,
232.1.3.2) dat
a. How can you satisfy the preceding requirements with the least configurations?
- A. ssm-mapping 232.1.3.0 8 2.0.0.1
- B. ssm-mapping 232.1.0.1 32 1.0.0.1
- C. ssm-mapping 232.1.3.2 16 2.0.0.1
- D. ssm-mapping 232.1.0.0 24 1.0.0.1
- E. ssm-mapping 232.1.0.2 32 1.0.0.1
- F. ssm-mapping 232.1.3.1 24 2.0.0.1
Answer: D,F
NEW QUESTION 70
The VRRP is enabled on the firewall dual-system Intranet users use NAT to access extranet FTP services Which of the following statements are true?
- A. The FTP Nat Alg function must be enabled on the firewall
- B. VRIDs of the VRRP must be bound with the NAT during NAT configuration in the outbound direction between domain.
- C. VRIDs of the VRRP do not need to be bound with the NAI during NAI configuration in the outbound direction between domains.
- D. The NAT cannot be used in easy IP mode.
Answer: A,B,D
NEW QUESTION 71
As shown in the figure, RTA connects to RTB and RTC. A TE tunnel is configured on RTA to reach RTC. The TE tunnel cannot be successfully established. However, CSPFbased path calculation is successful and RTA does not receive any PathErro messages. What are possible causes?
- A. Different authentication keys are configured on interfaces RTB-2 and RTC-1.
- B. An interface address on RTB is the same as the address of interface RTA-1.
- C. RSVP-TE is not configured at interface RTB-2.
- D. The reserved bandwidth is insufficient at interface RTB-2.
Answer: A,C
NEW QUESTION 72
In PIM-DM, which of the following scenarios about sending Join messages is true?
- A. The leaf router in the idle state receives host Join messages.
- B. The router receives state-refresh messages.
- C. The intermediate router receives graft messages from the downstream router when all downstream interfaces of the intermediate router are in the prune state.
- D. The router receives prune messages of the RPF neighbor from other routers when it is receiving data from the upstream.
Answer: D
NEW QUESTION 73
As shown in the figure , CE and CE 2 belong to VPN A, CE 3 and CE 4 belong to VPN B, VPN A and VPN B share the public network tunnels between border PE 1 and PE 2, and LDP tunnels are configured between PE 1 and PE 2. To isolate resources for VPN service data from PE 2 to PE 1, a unidirectional TE tunnel is configured t forward data from PE1. The QoS policy propagation though the border gateway protocol (QPPB) feature is configured on PE 2, and a QoS policy is defined when VPNs are bound to tunnel interfaces.
Which of the following statements about the configurations on PE 2 are true?
- A. The maximum reserved bandwidth must not exceed the bandwidth of the physical links.
- B. The mpls te commit command must be configured on the Tunnel1/0/0 interface,
- C. The maximum reserved bandwidth must not exceed the bandwidth of the tunnels.
- D. The mpls te cspf command must be configured in the global MPLS view.
- E. The mpls te commit command must be configured on the Post/0/0 interface.
Answer: A,B,D
NEW QUESTION 74
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 =2, VCID2 = 2, VCID3 =2, VCID4 +2
- B. VCID1 =1, VCID2 = 2, VCID3 =3, VCID4 +4
- C. VCID1 =1, VCID2 = 1, VCID3 =2, VCID4 +2
- D. VCID1 =1, VCID2 = 2, VCID3 =1, VCID4 +2
Answer: B
NEW QUESTION 75
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. 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 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. When SVC VLL is used, if PEs at two ends of a VC use different control words, the may not become Up.
- E. A control word generally has two bytes and can ne extended to four bytes.
Answer: E
NEW QUESTION 76
Which statement describes the delay requirement of the voice service for the IP bearer network?
- A. Bearer network delay=50 ms, allowed maximum delay = 100 ms
- B. No strict requirement.
- C. Bearer network delay=10s, allowed maximum delay = 20s
- D. Bearer network delay=150 ms, allowed maximum delay = 200 ms
Answer: A
NEW QUESTION 77
With the IPSec technology , which of the following description is true?
- A. ESP provides authentication service
- B. IPSec delivers service for transmission layer
- C. AH provides Data encryption
- D. ESP is more simple than AH
Answer: A
NEW QUESTION 78
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 debugginginformationis generated?
- A. 3--2--1--4
- B. 1--4--2--3
- C. 1--2--3--4
- D. 3--4--1--2
Answer: D
NEW QUESTION 79
With the SA, which of the following, option is correct?
- A. IKE SA is bidirectional
- B. IPSec SA is unidirectional
- C. KE SA is unidirectional
- D. IPSec SA is bidirectional
Answer: C,D
NEW QUESTION 80
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 the same domain ID on the PE
- C. Setting DN-bit in the ASE LSA
- D. Configuring Shame Link among PEs
Answer: B
NEW QUESTION 81
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