Authentic H31-161 Dumps – Free PDF Questions to Pass [Q46-Q69]

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Authentic H31-161 Dumps – Free PDF Questions to Pass

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Huawei H31-161 Exam Syllabus Topics:

Topic	Details
Topic 1	BRAS user access, IP MAN, IP backbone network, and mobile bearer network architecture MPLS TE features, multicast advanced features
Topic 2	Capability of independently maintaining typical network of carriers Maintain large-scale IP networks
Topic 3	Advanced features, and applications of each protocol Plan and design network and services
Topic 4	MPLS VPN features, SR and EVPN features Network and technology evolution direction
Topic 5	Knowledge of carrier’s network architecture and services Advanced features of routing protocols

NO.46 An interface sends 300 Mbit/s user BE traffic. The downstream HQoS scheduling is configured at this interface as follows SQ: cir 15 Mbit/s pw 200 Mbit/s FQ. queue be Ipq shaping 10 CQ: port-queue be Ipq shaping shaping-percentage 10 outbound, port shaping 100 How much traffic is at the downstream outbound interface after HQoS scheduling?

20 Mbit/s

10 Mbit/s

200 Mbit/s

100 Mbit/s

NO.47 Which of the following statements about the VPLS packet forwarding are true?

If a PE receives broadcast packets from a local user, the PE forwards the packets to all other interfaces In the same VSI and all other PEs.

If the destination MAC address of a packet is not a broadcast address and a PE has not learned the MAC address, the broadcast this packet in one VSI

If the destination MAC address of a packets is not a broadcast address and a PE has not learned the MAC address, the PE broadcast this packet in on VSI.

If a receive broadcast packet sent a remote PE, it forwards the packet only to the AC interface instead of other PEs.

NO.48 Which statement about the MPLS LSP traceroute is true?

The destination IP address if an Echo request sent by the LSP traceroute is the IP address of the corresponding FEC.

The downstream mapping TLV is used to carry downstream information of the correct node.

Echo request route sends by the LSP traceroute can cay multiple downstream mapping TLVs.

The egress route sends back an reply packet containing the downstream mapping TLV if the receives Echo request contains the downstream mapping TLV.

NO.49 As shown in the figure, MPLS, MPLS TE, and MPLS RSVP-TE are configured on RTA, RTB, RTC, and RTD. Tunnel1/0/0 and Tunnel2/0/0 are set up based on the explicit path RTA-RTB-RTC. Tunnel1/0/0 has a hot-standby path (RTA-RTD-RTC) and an FRR path: RTA-RTD-RTC, whereas Tunnel2/0/0 has an ordinary path (RTA-RTD-RTC) and an FRR path. Which of the following statements are true?

When the link between RTA and RTB is faulty, the state of Tunnel1/0/0 is hotstanby inuse.

When the link between RTA and RTB is faulty, the state of Tunnel2/0/0 is ordinary inuse.

When the link between RTA and RTB is faulty, the state of Tunnel2/0/0 is FRR inuse.

When the link between RTB and RTC is faulty, the state of Tunnel2/0/0 is ordinary inuse.

NO.50 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?

CE cannot be connected to a PE through OSPF.

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

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

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

NO.51 On a router, HQoS parameter are configured for the users. The CURP of user 1 is Mbit/s. The CUR and PIR
ofuser 2 are 0 Mbit/s and 10 Mbit/s, respectively. The CIR and PR of user 3 are 0 Mbit and 20 Mbit/s
respectively. These three users join group with a bandwidth of 10 Mbit/s.
Which statements is true?

User 2 is of higher priority than user 1

User 1 is of the highest priority among these users

User 3 is of higher priority than user 2

No user can preempt the bandwidth of the other two users

NO.52 Which functions does the bearer network NMS mainly provide?

Monitoring network traffic

Switchover time of a device’s active/standby system

Monitoring device load(CPU and Memory)

Packet loss delay

NO.53 [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?

310s

250s

410s

130s

NO.54 Two BGP routes with the same prefix are received from two peers. The two routes have the same attributes except the next hop (NH1 and NH2).NH1 is iterated to the directly connected A and B, NH2 to directly connected C and D.
If maximum load-balancing2 is configured in BGP and a router can be configured with a maximum of six paths for load balancing, how many paths does a forward information base (FIB) generate regarding this prefix?

NO.55 CR-LSP and GRE are selected as tunneling policies. CR-LSP has a higher priority and a maximum of three tunnels can be configured for load balancing. Which statement about tunnel selection is false?

The CR-LSP tunnel in the Up state is preferred. If less than three CR-LSP tunnels are in the Up state, GRE tunnels in the Up state are also selected until there are three available tunnels.

One GRE tunnel is selected. If a new CR-LSP tunnel is added or a CR-LSP tunnel becomes Up, the selected GRE tunnel will be replaced with an active CR-LSP.

If the number of tunnels used for load balancing is less than the configured value and CR-LSP or GRE tunnels become Up, these tunnels will also be configured for load balancing.

When three CR-LSP tunnels are used for load balancing, the three CR-LSP tunnels must be in different

NO.56 An IPTV bearer network requires the broadband TV (BTV), VOD, and near video on demand (NVOD) services. Video programs use the standard MPEG 4 codec format. Which of the following statements about the QoS policy are true?

To ensure the IPTV service quality on the user side, reserve 4 Mbit/s bandwidth for the IPTV service for each user and plan extra bandwidth for the broadband Internet service.

To ensure the IPTV service quality on the user side, reserve 2.5 Mbit/s bandwidth for the IPTV service for each user and plan extra bandwidth for the broadband Internet service.

Ensure that the BTV service has a higher priority than the VOD/NVOD service, and forward the downstream traffic and some protocol packets, such as the IGMP and PIM packets in priority.

Ensure that the VOD/NVOD service has a higher priority than the BTV service and guarantee QoS of both the upstream and downstream traffic.

NO.57 On the OSPF network, which of the following statements about the authentication function of the OSPF protocol are true?

The OSPF protocol supports area authentication and interface authentication.

The interface authentication mode must be consistent with the area authentication mode . For Example, interface and area are authentication in simple or MDS mode or are not authenticated.

The interface authentication mode can be different from the area authentication mode.

The authentication function of the OSPF is implemented by parameter settings in hello packets.

NO.58 Which of the following statements about the MAC address learning in VPLS are true? (ACD)

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).

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.

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.

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.

NO.59 Which statement about the Ethernet clock synchronization technology used in actual solutions is true?

The IEEE1588 technology requires the intermediate node to support transparent clock transmission.

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

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

The 802.1as technology requires the intermediate node to support transparent clock transmission.

NO.60 Which of the following combinations of LDP working modes supports LDP FRR?

Downstream independent label distribution + ordered label control + free label retentionB.Downstream on-demand label distribution + independent label control + free label retention

Downstream independent label distribution + independent label control + conservative label retention

Downstream on-demand label distribution + ordered label control + conservative label retention

NO.61 Which statement about the tunnel policy configuration is false?(A)

The tunnel policy is configured in the system view. You can run the tunnel-policy policy-name command to create tunnel policies and enter the tunnel policy view. One VPN instance supports multiple tunnel policies, and multiple VPN instances can share a tunnel policy.

You can run tunnel select-seq { gre | lsp | cr-lsp } * load-balance-number load-balance-number in the tunnel policy view to configure the priorities of tunnels and the number of tunnels among which load is balanced.

You can run the tnl-policy policy-name command in the VPN instance view to apply tunnel policies to VPN instances. If the required tunnel policy does not exist, the configuration is saved but does not take effect. If you create this tunnel policy in the system view later, the saved configuration will take effect.

If a VPN instance does not have a tunnel policy, an LSP is used and the number of tunnels configured for load balancing is set to 1

NO.62 In PIM DM, which of the following statements about state-refresh message processing are true?

State-refresh messages are generated only on the DRs that directly connect to multicast sources.

Only state-refresh messages received by the RPF interface may be forwarded.

If an interface with the (S, G) entry is an assert loser, state-refresh messages are not forwarded to the interface.

If an interface with the (S, G) entry is in the prune state, state-refresh messages are not forwarded to the interface.

State-refresh messages carry the (S, G) assert and prune status of downstream interfaces.

NO.63 Exhibit:

The figure shows the typically mode in which a common softswitch access the bearer network. VRRP is enabled on RTA and RTB. In normal cases, RTA is the VRRP master router and RTB is the VRRP is the VRRP salve router. The ETH_trunk is enabled between RTA RTB. IF VRRP is not bounded to BFD and each [parameter uses their default settings, which statement is the true when the upstream link of RTA is faulty?

RTB cannot receive the heartbeat packet from RTA, and both routers become master routers.

The VRRP status remain unchanged but the downstream traffic is directly forwarded from RTB to the MSoftx.

The ARRP status remain unchanged but the downstream traffic is forwarded from RTB to the MSoft through RTA

The ARRP status immediately between RTA and RTB and RTB, and RTB becomes the master router.

NO.64 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?

display mpls te tunnel path

display mpls te tunnel-interface

display mpls lsp verbose

display mpls te tunnel verbose

NO.65 On a VPLS network a PE router receive a packet that containers layer 2 user data from a PE. How does the PE
router determine the source VSI of this packet?

Outer label of the packets

Destination MAC address in the L2 PDU encapsulation in the packet

MAC address and VLAN ID in the PDU encapsulated in the packet

Inner label of the packet

NO.66 For the Eudemon firewall, the nat-policy command is configured in which mode?

System mode

Interface mode

Interzone mode

Intrazone mode

NO.67 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?

RTD receive two external LSAs whose LS_ID is 1.1.1.0

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

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

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

NO.68 When the RSVP LSP FRR protection is enables, which of the following statements about the original RSVP LSP are true?

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

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

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

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

NO.69 The Huawei router is the hop RD where the SSM mapping function is enabled at the interface. Some IGMPv2
hosts expect to receive (1.0.01,232.1.0.1) (1.0.0.1232.1.0.2), and (2.0.0,232.1.3.2) data. How can you satisfy
the preceding requirement with the least configurations?

ssm-mapping 232.1.3.2 16.2.0.0.1

ssm mapping 232.1.3.1.24.2.0.0.1

ssm-mapping 232. 1 308 2 00.1

ssm-mapping 232 1.0. 1 32. 1. 0. 0. 1

ssm-mapping 232. 1.0. 2. 32. 1. 0. 0. 1

ssm-mapping 232. 1. 0. 0. 24. 1. 0. 0. 1