[Dec 29, 2021] Fully Updated H31-161 Dumps - 100% Same Q&A In Your Real Exam
Latest H31-161 Exam Dumps - Valid and Updated Dumps
NEW QUESTION 43
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 =10-6
- C. Allowed maximum packet loss =1%
- D. Allowed maximum packet loss =1%
Answer: C
NEW QUESTION 44
Exhibit:
Which statement about inter-AS MPLS VPN Option_B is false?
- A. The ASBR cannot be used as a PE simultaneously and a CE cannot be connected to an ASBR.
- B. 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.
- C. When ASBRs are directly connected, VPN traffic can be forwarder between them only after MPLS is enabled on the interfaces.
- D. When ASBRs are directly connected, packets transmitted on the VPN between them have only one label.
Answer: A
NEW QUESTION 45
As shown in the figure. CE 1 and CE 3 belong to VPN-A, and CE 2 CE 2 4 belong to VPN-B VPN-target VPN-A is 111:1 and that of VPN-B is 222:2 users on different VPNs are not allowed to access each other. Configuration principles are as follows:
On the backbone network VPNs are not connected to a CE, VPN instance need to be configured on the PE, and an interface on the PE for connecting to the CE must be bounded to a VPN instance. After binding an interface to a VPN instance, you must configure the IP address of the interface Between PEs, IS-IS is configured for PE interworking. MPLS basic capabilities and MPLS LDP are configured for MPLS LSP establishment, and MP-IBGP is configured for VPN route exchange.
How to enable CE 1 to learn routes from AS 64430?
- A. Import BGP routes in IS-IS process 200
- B. Import IS-IS 200 routes in IS-IS process 100
- C. Import BGP routes in IS-IS process 100
- D. Import IS-IS 100 routes in IS-IS process 100
Answer: C
NEW QUESTION 46
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. RSVP-TE is not configured at interface RTB-2.
- B. Different authentication keys are configured on interfaces RTB-2 and RTC-1.
- C. An interface address on RTB is the same as the address of interface RTA-1.
- D. The reserved bandwidth is insufficient at interface RTB-2.
Answer: A,B
NEW QUESTION 47
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. 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. - B. PE 1 receives packets with a VLAN tag from CE 1 and adds a VLAN tag to these packets.
- C. PE 1 add two MPLS labels to a packet before sending the packet to a router.
- D. A packet received by CE 2 from PE 2 has two VLAN tags CE 2 removed theouter tab and forwards the
packets to PC B based on the innertag
Answer: C
NEW QUESTION 48
Which statement about the OSPF VPN is true? (B)
- A. When a PE is an OSPF ABR, the PE is connected to a CE only in a non-backbone OSPF area.
- B. An OSPF process can be configured with one or multiple primary domain IDs.
- C. OSPF ASs are differentiated by domain ID. Therefore, devices within one AS must be configured with the same domain ID.
- D. A VPN instance can include multiple OSPF processes. An OSPF process can be bound to multiple VPN instances.
Answer: C
NEW QUESTION 49
Which functions does the bearer network NMS mainly provide?
- A. Packet loss delay
- B. Monitoring device load(CPU and Memory)
- C. Monitoring network traffic
- D. Switchover time of a device's active/standby system
Answer: A,B,C
NEW QUESTION 50
Which statement describes the delay variation requirement of the voice service for the IP bearer network?
- A. No strict requirement
- B. Bearer network delay variation = 10 ms. Allowed maximum delay variation =20ms
- C. Bearer network delay variation +100 ms, allowed maximum delay variation +200 ms
- D. Bearer network delay variation + 1s
Answer: B
NEW QUESTION 51
Which of the following statements about the L2VPN are true?
- A. When providing the MPLS L2VPN service for enterprise users, the carrier must filter user route advertisements. Otherwise, flapping of user routes may lead to flapping of network routes.
- B. When a traditional L2VPN (ATM and FR) is upgraded to an MPLS L2VPN, the network topology does not need to be adjusted.
- C. On a L2VPN, routing information of users does not need to be maintained or managed.
- D. If the length of a L2VPN packet that arrives at a P node exceeds the maximum transmission unit (MTU) of relevant interfaces of the P node, the packet will be fragmented and then forwarded.
Answer: B,C
NEW QUESTION 52
Which of the following statements about the Martini VPLS are true?
- A. Labels are retained using the liberal label retention method.
- B. A VC must be established using remote LDP.
- C. Labels are allocated for PWs in DU mode when they are established.
- D. When LDP is used to transmit signaling, LDP TLVs carry the VPLS information.
- E. Labels are allocated for PWs in DoD mode when they are established.
Answer: A,C
NEW QUESTION 53
On the IP bearer network, which of the following methods can be used to manage devices on the backbone network and switches on the signaling VPN?
- A. Leak public and private network routes to manage devices on the public and private networks.
- B. Construct an outband NM network to manage all devices.
- C. Establish two physical or logical links with the PE to manage devices on the public and private networks. One link belongs to the public network and the other belongs to the private network.
- D. Establish a physical or logical link with the PE and mount MCEs to the PE to manage devices on the public and private networks.
Answer: A,B,C
NEW QUESTION 54
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 CE, configure STC for user VLANs on the user access side.
- 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 PE, configure Dot1q tunnel interfaces and simple traffic classification (STC) for interfaces on the private network.
Answer: B,C
NEW QUESTION 55
Refer to the exhibit.
This figure shows the MPLS L3VPN networking. CE 1 and CE 3 belong to VPN A.
CE 2 and CE 4 belong to VPN B.
Two MPLS TE tunnels (5 Mbit/s and 10 Mbit/s) and an LSP tunnel are set up between PE 1 and PE 2.It is expected that a tunnel policy is configured on PE
1 to distribute traffic in the three tunnels and MPLS TE tunnels are preferred. Configurations on PE
1:
Configuration of PE 1
#
sysname PE1
#
ip vpn-instance vpna
route-distinguisher 100:1
tnl-policy policy1
vpn-target 111:1 export-extcommunity
vpn-target 111:1 import-extcommunity
#
ip vpn-instance vpnb
route-distinguisher 100:2
tnl-policy policy2
vpn-target 222:2 export-extcommunity
vpn-target 222:2 import-extcommunity
#
mpls lsr-id 1.1.1.1
mplsmpls te
mpls rsvp-te
mpls te cspf
#
mpls ldp
#
interface Pos1/0/0
link-protocol ppp
ip address 100.1.1.1 255.255.255.252
mpls
mpls te
mpls te max-link-bandwidth 20000
mpls te max-reservable-bandwidth 15000
mpls rsvp-te
mpls ldp
#
interface Pos2/0/0
link-protocol ppp
ip binding vpn-instance vpna
ip address 10.1.1.2 255.255.255.252
#
interface Pos2/0/1
link-protocol ppp
ip binding vpn-instance vpnb
ip address 10.2.1.2 255.255.255.252
#
interface LoopBack1
ip address 1.1.1.1 255.255.255.255
#
interface Tunnel1/0/1
ip address unnumbered interface LoopBack1
tunnel-protocol mpls te
destination 2.2.2.2
mpls te tunnel-id 11
mpls te bandwidth bc0 5000
mpls te commit
#
interface Tunnel1/0/2
ip address unnumbered interface LoopBack1
tunnel-protocol mpls te
destination 2.2.2.2mpls te tunnel-id 22
mpls te bandwidth bc0 10000
mpls te reserved-for-binding
mpls te commit
#
bgp 100
peer 2.2.2.2 as-number 100
peer 2.2.2.2 connect-interface LoopBack1
#
ipv4-family unicast
undo synchronization
peer 2.2.2.2 enable
#
ipv4-family vpnv
policy vpn-target
peer 2.2.2.2 enable
#
ipv4-family vpn-instance vpna
import-route direct
#
ipv4-family vpn-instance vpnb
import-route direct
#
ospf 1
opaque-capability enable
area 0.0.0.0
network 100.1.1.0 0.0.0.3
network 1.1.1.1 0.0.0.0
mpls-te enable
#
tunnel-policy policy1
tunnel binding destination 2.2.2.2 te Tunnel1/0/2
#
tunnel-policy policy2
tunnel select-seq cr-lsp lsp load-balance-number 3
#
returnUnder the preceding configurations, traffic cannot be distributed to the three tunnels. To implement load balancing, which of the following modifications are correct?
- A. Create a GRE tunnel to 2.2.2.2 on PE 1.
- B. Create a TE tunnel to 2.2.2.2 on PE 1.
- C. Delete policy 1 in the vpna instance view.
- D. Delete policy 1 from PE 1.
Answer: B,D
NEW QUESTION 56
Which statement about the MPLS LSP traceroute is true?
- A. The egress route sends back an reply packet containing the downstream mapping TLV if the receives
Echo request contains the downstream mapping TLV. - B. The downstream mapping TLV is used to carry downstream information of the correct node.
- C. Echo request route sends by the LSP traceroute can cay multiple downstream mapping TLVs.
- D. The destination IP address ifan Echo request sent by the LSPtraceroute is the IP address of the
corresponding FEC.
Answer: C
NEW QUESTION 57
If a (*, G) entry exists in the RP, which of the following statements about the source registration process are true in PIM-SM?
- A. The first hop DR connecting to the source encapsulates received multicast data into PIM registration information and unicasts the encapsulated information to the RP.
- B. The RP decapsulates registration information and uses RPT to send data packets to be sent to the multicast group to the outbound interface.
- C. The RP unicasts a registration stop message to the first hop router connected to the multicast source.
- D. The RP sends an (S, G) Join message hop by hop to the first hop DR connected to the multicast source to add the multicast source to the SPT.
- E. The first-hop DR connecting to the source sends received multicast data to the RP hop by hop.
Answer: A,B,C,D
NEW QUESTION 58
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