Latest Huawei H31-161 Actual Free Exam Questions & Community Discussion, Page 7

Question #85

Exhibit:

As shown in the figure, RTA and have one BGP session. To detect fault fast, the BFD for BGP feature needs to be configured on RTA and RTB. BGP-related configurations are as follows:

The only Ethernet link between RTA and RTB becomes faulty when the BGP neighbor session is in ESTABLISHED state and the BFD session is in the UP state. Which statements is true? (Note: BFD works in asynchronous mode)

A. RTB detect the fault faster than RTA.

B. The BGP session between RTA and RTB is interrupted when the BGP hold time (time duration is 180s by default) express.

C. RTA detect the fault faster than RTB.

D. RTA and RTB detect the fault simultaneously.

Discussion 0

Correct Answer: A Vote an answer

Question #86

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. 1200

B. 2000

C. 2800

D. 400

Discussion 0

Correct Answer: C Vote an answer

Question #87

Which of the following statements about the working principle f LDAP FRR are true?

A. LDP TFRR can be deployed on the ingress node and the intermediate node. The primary and backup LSPas are recorded in the ILM table on the intermediate node and on the FIB table on the ingress node.

B. After LDP FRR enable, a backup can degenerated for a primary LSP to prevent serious packet loss during fats flapping of the primary LSP.

C. Multiple LSPs can be up on the ingress node, that is entries about multiple backup LSPs are generated in the forwarding table according to the priority of the FRR, implementing multi-layer protection.

D. After LDP FRR is enabled, a backup LSP is generated both the primary and backup LSPs are stored in the forwarding table.

Discussion 0

Correct Answer: B Vote an answer

Question #88

Refer to the exhibit.

As shown in the figure, PE 1 sets up an MP-IBGP neighbor relationship
with PE 2 and they communicate over MPLS LDP. A CE communicates with a PE over OSPF.
Configure the VRF on PE 1 as follows:
ip vpn-instance vrf1
route-distinguisher 100:1
vpn-target 1:1 export-extcommunity
vpn-target 1:1 import-extcommunityConfigure OSPF on PE 1 as follows:
ospf 1 vpn-instance vrf1
area 0.0.0.0
network 100.1.1.0 0.0.0.255
Configure BGP on PE 1 as follows:
bgp 100
peer 22.22.22.22 as-number 100
peer 22.22.22.22 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 22.22.22.22 enable
#
ipv4-family vpnv4
policy vpn-target
peer 22.22.22.22 enable
#
ipv4-family vpn-instance vrf1
import-route ospf 1
PE 2 has the same configurations as PE 1. MP-IBGP neighbor relationships have been set up between PEs, and OSPF neighbor relationships have been set up between PEs and CEs. A valid route 1.1.1.1/32 is imported from CE 1 to an OSPF area, but CE 1 does not learn the route. What is the reason?

A. CE cannot be connected to a PE through OSPF.

B. CE can be connected to a PE through OSPF only when the PE also runs OSPF.

C. BGP routes must be imported to OSPF areas on a PE.

D. An RD is shared by VRFs on PE 1 and PE 2.

Discussion 0

Correct Answer: C Vote an answer

Question #89

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.

Discussion 0

Correct Answer: A,B,D Vote an answer

Question #90

Which multicast protocol can support the SSM? (

A. IGMPv2

B. BGP

C. MLDv2

D. OSPF

E. IGMPv3

F. PIMDM

G. PIMSSM

Discussion 0

Correct Answer: C,E,G Vote an answer

Question #91

Which of the following statements about the Martini VPLS are true?

A. Labels are retained using the liberal label retention method.

B. When LDP is used to transmit signaling, LDP TLVs carry the VPLS information.

C. Labels are allocated for PWs in DU mode when they are established.

D. Labels are allocated for PWs in DoD mode when they are established.

E. A VC must be established using remote LDP.

Discussion 0

Correct Answer: A,C Vote an answer

Question #92

Which of the following statements about BFD for MPLS LSP are true?

A. An MPLS LSP may be unidirectional .If BFD packets are transmitted along an MPLS LSP in the forward direction., these packets may be forwarded over IP in the reverse direction. Then the forward and reverse paths of a packet may be different As a result, when a fault occurs on the reverse path, BFD detects and reports the fault even if the MPLS LSP is normal.

B. If MPLS LSPs work in load balancing mode, a BFP session should be triggered on each LSP in principle. Only one BFD session. however, can be initialed for load-balancing MPLS LSPs to an intermediate node In this case, the forwarding path ol BFD packets may be different from what expected. As a result may be reported or missed.

C. In BFD for MPLS LSP, LSP Ping is used to negotiate the identifier and parameters of a BFD session.

D. BFD for MPLS LSP detects faults only on the forwarding plane. LSP Ping, however, can not only detect faults on the forwarding plane, but also find out inconsistencies between the forwarding plane and the control plain- Therefore, they are often combined for a better fault detection solution.

Discussion 0

Correct Answer: A,B,D Vote an answer

Question #93

A. No route

B. Only one (The route leading to CE 3 is learned based on the IBGP neighbor relationship between PEs. The other route is filtered out by OSPF loopback detection.)

C. The static route is imported to the OSPF,
and the OSPF route is imported to the VPN instance of the BGP. The MP-IBGP neighbor relationship is established among the PEs. Subinterfaces are enabled in the links between PEs and are bound to the same VPN to exchange VPN route information between PEs. How many routes on PE1-B can reach CE 3?

D. Only the OSPF category-5 route can reach CE 3.

E. Two (One route is learned based on the IBGP neighbor relationship between PEs, and the other one is the OSPF category-5 route.)

Discussion 0

Correct Answer: A Vote an answer

Question #94

Exhibit:

As shown in the figure, external route 1.1.1.0/24 is imported to RTA that is located in the NSSA area RTD is a backbone area router. RTB and RTC are both area border router (ABRs). OSPF configuration are as follows.

Which statement is true?

A. RTD receive an external LSAs whose LS_ID is 1.1.1.0 and advRouter is 2.2.2.2.

B. RTD receive an external LSAs whose LS_ID is 1.1.10/24 based on category 7 LSAs sent by RTA

C. RTD receive an external LSAs whose LS_ID is 1.1.1.0 and advRouter is 3.3.3.3.

D. RTD receive two external LSAs whose LS_ID is 1.1.1.0

Discussion 0

Correct Answer: C Vote an answer

Question #95

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

A. 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

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

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

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

Discussion 0

Correct Answer: B,C Vote an answer

Question #96

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 232.1.0.2 32 1.0.0.1

B. ssm-mapping 232.1.0.0 24 1.0.0.1

C. ssm-mapping 232.1.0.1 32 1.0.0.1

D. ssm-mapping 232.1.3.0 8 2.0.0.1

E. ssm-mapping 232.1.3.2 16 2.0.0.1

F. ssm-mapping 232.1.3.1 24 2.0.0.1

Discussion 0

Correct Answer: B,F Vote an answer

Question #97

The RADIUS or Huawei Terminal Access Controller Access Control System (HWTACACS) protocol can be used for authentication during network access. Which of the following statements about these two protocols are false?

A. The RADIUS implements authentication and authorization separately to improve security

B. The RADIUS uses the Triple Data Encryption Standard (3Des) to encrypt passwords and some important data packets. The RADIUS provides a higher level of security than the HWTACACS.

C. Both the HWTACACS and RADIUS encrypt all data in the packet body.

D. The HWTACACS uses TCP to transmit data while the RADIUS uses UDP to transmit data.

Discussion 0

Correct Answer: A,B,C Vote an answer

Question #98

Exhibit:

As shown in the figure, complex traffic classification is configured for RTA's upstream GigabitEthernet 1/0/0. The QoS is configured as follows:

A tester sends TCP packets from GE 1/1 to GE 1/2 at 40 1.2.2 IF DSCP values of packets GE receives are not 46, what are the possible causes?

A. DSCP values of sent packets are not 10.

B. The qos phb command is enabled on RTA's GigabitEthernet1/0/0.

C. STC is disabled at RTA's GigabitEthernet 1/0/0.

D. The default mapping from the EF value to the DDCP value is modified

Discussion 0

Correct Answer: A Vote an answer

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