Latest Huawei H31-161 Actual Free Exam Questions & Community Discussion, Page 4

Question #43

Which statement about the Ethernet clock synchronization technology used m actual solutions is true?

A. The IEEE 1588 technology requites the intermediate node to support transparent clock transmission

B. The 802 1aS technology requires the intermediate node to support transparent clock transmission

C. The CES packet recovery technology requires the intermediate node lo support transparent clock transmission

D. The NTP technology requires the intermediate node to support transparent clock transmission

Discussion 0

Correct Answer: A Vote an answer

Question #44

As shown in the figure, the primary tunnel uses the path RTA -> RTB -> RTC. There are two FRR paths: One protects the link between RTA and RTB and the other one protects the link between RTB and RTC.If a path in the primary tunnel is faulty, which command can be used on RTA to locate the fault?

A. display mpls lsp verbose

B. display mpls te tunnel-interface

C. display mpls te tunnel path

D. display mpls te tunnel verbose

Discussion 0

Correct Answer: C Vote an answer

Question #45

As shown in the figure, the asymmetric VLL FRR networking is used. AC
interfaces on PE 1, PE 2, and PE 3 are configured as follows:
Configuration of the AC interface on PE 1:
interface Pos3/0/1link-protocol ppp
undo shutdown
oam detect lcp-terminal notify lcp-terminal
ip address 208.1.1.1 255.255.255.0
ip address 208.2.2.1 255.255.255.0 sub
mpls l2vc pw-template pw1 13579 ip-interworking
mpls l2vc pw-template pw2 24680 ip-interworking secondary
mpls l2vpn oam-mapping
mpls l2vpn reroute immediately resume 0
Configuration of the AC interface on PE 2:
interface Pos1/0/3
link-protocol ppp
undo shutdown
ip address 208.1.1.2 255.255.255.0
mpls l2vc pw-template pw1 13579 ip-interworking
mpls l2vpn oam-mapping
Configuration of the AC interface on PE 3:
interface Pos1/0/0
link-protocol hdlc
undo shutdown
oam detect hello-stop notify hello-stop
ip address 208.2.2.2 255.255.255.0
mpls l2vc pw-template pw1 24680 ip-interworking
mpls l2vpn oam-mapping
Which of the following statements are true on the condition that IGP and MPLS are configured correctly on the public network?

A. If a forwarding fault is detected on the PW between PE 1 and PE 2, traffic can be switched to the backup PW on PE 1.

B. The PW between PE 1 and PE 2 is the primary PW.

C. If a forwarding fault is detected on the public network side of the PW between PE 1 and PE 2, traffic from CE 2 to CE 1 can be switched to the PW between PE 1 and PE 3.

D. If a forwarding fault is detected on the PW between PE 1 and PE 2, traffic from CE 1 to CE 2 can be switched to the PW between PE 1 and PE 3.

Discussion 0

Correct Answer: A,B,D Vote an answer

Question #46

Which command is used to query the aging time of the firewall session .

A. display firewall server-map

B. display firewall session table verbose

C. display firewall packet-filter default all

D. display firewall session table

Discussion 0

Correct Answer: A,B Vote an answer

Question #47

In asymmetric dual-homing CE networking, which of the following
statements about the VPN are true?

A. RTs in the VPN instances configured on PE 2a and PE 2b may be different

B. RDs in the VPN instances configured on PE 2a and PE 2b may be different.

C. RTs in the VPN instances configured on PE 2a and PE 2b must be the same.

D. RDs in the VPN instances configured on PE 2a and PE 2b must be the same.

Discussion 0

Correct Answer: B Vote an answer

Question #48

Exhibit:

As shown in the figure, inter-AS VPN Option A is used. CE 1 and CE 2 belong to the same VPNAS 100 and AS 200 run IGP and LDP, respectively.
ASBRs communicate with each other through EBGP. the loopback interface address of CE 1 is 10.1.1.1/24 Suppose VPNs configured on the PE and ASBR are both named vpn-1 and CE 2 can ping CE1. Which command can be ruin on ASBR 2 to find out route 10.1.1.1/24?

A. Display ip routing-table vpn-instance vpn_1

B. Display ip routing-table

C. Display bgp vpnv4 all routing-table

Discussion 0

Correct Answer: A Vote an answer

Question #49

Refer to the exhibit.

As shown in the figure, DUT stands for the device under test and RTA is used to support the test.What is the correct procedure of a fast convergence test? ( )
1. Read data from the tester, record the numbers of sent and received packets, and count the number of lost packets.2. Switch the DUT-to-RTA background traffic to the link whose metric value is 100.3. DUT-to-RTA background traffic is forwarded along the link whose metric value is 10.4. Use the tester to advertise 10K routes to RTA and inject 10K flows to the DUT (each flow takes one route).5. Remove the optical fiber (providing a link whose metric value is 10) from the tester.6.
Calculate the convergence time based on the number of lost packets and packet sending rate.7.
Stop forwarding traffic when the packet receiving rate is equal to the packet sending rate.

A. 3, 4, 5, 7, 2, 1, 6

B. 1, 2, 3, 4, 5, 6, 7

C. 4, 3, 5, 2, 7, 1, 6

D. 3 5 4 2 1 6 7

Discussion 0

Correct Answer: C Vote an answer

Question #50

When a PW works in RAW mode, which of the following statements are true?

A. When the VSI uses Ethernet for encapsulation, the VLAN tag in a packet sent from a CE to its nearby PE must be reserved when the packet reaches a VPLS domain, and whether the packet needs to be encapsulated at the egress of the VPLS domain must be determined based on the encapsulation mode used on the peer AC.

B. When the VSI uses Ethernet for encapsulation, the VLAN tag in a packet sent from a CE to its nearby PE must be removed when the packet reaches a VPLS domain, and whether the packet needs to be encapsulated at the egress of the VPLS domain must be determined based on the encapsulation mode used on the peer AC.

C. When the VSI uses Ethernet for encapsulation, a packet sent from a CE to its nearby PE must be added with a VLAN tag when the packet reaches a VPLS domain, and whether the packet needs to be encapsulated at the egress of the VPLS domain must be determined based on the encapsulation mode used on the peer AC.

D. When the VSI uses Ethernet for encapsulation, a packet sent from a CE to its nearby PE does not need to be added with a VLAN tag when the packet reaches a VPLS domain, and whether the packet needs to be encapsulated at the egress of the VPLS domain must be determined based on the encapsulation mode used on the peer AC.

Discussion 0

Correct Answer: B,D Vote an answer

Question #51

In the inter-AS multicast, which statement about transmitting MSDP SA messages is false?

A. SA messages can be transmitted only between RPs in different PIM networks.

B. The router uses the SA cache to store SA messages.

C. The router checks the RPF after receiving SA messages.

D. The SA message contains the multicast source and group information

Discussion 0

Correct Answer: A Vote an answer

Question #52

Which of the following statements about the MAC address learning in VPLS are true? (ACD)

A. The PE learns the MAC address of a directly connected CE through the PW and learns the MAC address of a remote CE through the AC.

B. In unqualified mode, the PE learns MAC addresses on a per-VSI basis and all user VLANs share a broadcast domain and a MAC address space.

C. In qualified mode, the PE learns MAC addresses on a per-VLAN basis in each virtual switch instance (VSI). Each user VLAN has its own broadcast domain and independent MAC address space.

D. The PE learns the MAC address of a directly connected CE through the attachment circuit (AC) and learns the MAC address of a remote CE through the pseudo wire (PW).

Discussion 0

Correct Answer: B,C,D Vote an answer

Question #53

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 need to be met.VPNA-CE 1 can interwork with VPNA-CE 2. 2>VPNB-CE 1 can interwork with VPNB-CE 2.
The figure shows the types of links between CEs and PEs and the VC IDs used in Martini mode.
Which of the following VC ID configurations are correct?

A. VCID1 = 1, VCID2 = 2, VCID3 = 3, VCID4 = 4

B. VCID1 = 1, VCID2 = 2, VCID3 = 1, VCID4 = 2

C. VCID1 = 2, VCID2 = 2, VCID3 = 2, VCID4 = 2

D. VCID1 = 1, VCID2 = 1, VCID3 = 2, VCID4 = 2

Discussion 0

Correct Answer: B,C Vote an answer

Question #54

In the VRP, which of the following authentication modes are supported by the secure shell (SSH)?

A. md5

B. password

C. password-rsa

D. Rivest-Shamir-Adleman (RSA)

Discussion 0

Correct Answer: B,C,D Vote an answer

Question #55

With the NAT technology, which of the following elements can be translated?

A. Source port number

B. Destination IP

C. Session table

D. Destination port number

E. Source IP

Discussion 0

Correct Answer: A,B,D,E Vote an answer

Question #56

Exhibit:

As shown in the figure, virtual private LAN service (VPLS) is enabled on routers PE 1 and PE 2.CEs are connected to PEs through QinQ and PC A and PC B are connected to the two CEs. The two PCs belong to the same VPN and can communicate with each other properly. Which of the following statements about the communication process when you ping PC B from PC A are true?

A. A packet received by CE 2 from PE 2 has two VLAN tags CE 2 removed the outer tab and forwards the packets to PC B based on the inner tag

B. PE 1 add two MPLS labels to a packet before sending the packet to a router.

C. If the penultimate hop popping (PHP) feature of MPLS is enabled on PEs, a packet received by PE 2 from a P router has two VLAN tags one MPLS label.

D. PE 1 receives packets with a VLAN tag from CE 1 and adds a VLAN tag to these packets.

Discussion 0

Correct Answer: B,C,D Vote an answer

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