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Huawei H31-161 - Questions & Answers

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Question 1
Single choice

Which message does the pseudo wire emulation edge-to-edge (PWE3) add for LDP signaling extension compared with Martini VLL?

A.

Request

B.

Mapping

C.

Withdraw

D.

Release

E.

Notification

Question 2
Single choice 
<Quidway>display igmp group

IGMP interface group report information of VPN-Instance: public net

Ethernet6/1/1(40.1.1.1):

Total 1 IGMP Group reported

Group: 232.0.0.1

Uptime: 00:00:22

Expires: off

Last reporter: 40.1.1.3

Last-member-query-counter: 0

Last-member-query-timer-expiry: off

Group mode: include

Version1-host-present-timer-expiry: off

Version2-host-present-timer-expiry: off

Source list:

Source: 20.1.1.56
Uptime: 00:00:22

Expires: 00:05:08

Last-member-query-counter: 3

Last-member-query-timer-expiry: 00:00:01

Source: 20.1.1.57

Uptime: 00:00:22

Expires: 00:00:17

Last-member-query-counter: 3

Last-member-query-timer-expiry: 00:00:01

The preceding information shows the entry states in the IGMP interface table on Ethernet 6/1/1.

Which statement is true when IGMP sends source/group query messages?

A.

IGMP sends two messages. In one message, the multicast source is 20.1.1.56 and the S flag is not configured. In the other message, the multicast source is 20.1.1.57 and the S flag is set to 1

B.

IGMP sends two messages. In one message, the multicast source is 20.1.1.56 and the S flag is set to
1. In the other message, the multicast source is 20.1.1.57 and the S flag is not configured.

C.

IGMP sends one message in which the multicast sources are 20.1.1.56 and 20.1.1.57 and the S flag is set to 1.

D.

IGMP sends one message in which the multicast sources are 20.1.1.56 and 20.1.1.57 and the S flag is not configured.

Question 3
Multiple choice 
<Quidway>display current-configuration

multicast routing-enable

#

acl number 2000

rule 5 permit source 225.0.0.0 0.0.0.255
#

interface Ethernet6/1/0

ip address 10.1.1.1 255.255.255.0

igmp enable

pim sm

#

igmp

#

pim

ssm-policy 2000

#

return

The preceding are partial multicast router configurations. Which of the following configurations are required to configure the SSM Mapping on Ethernet 6/1/0 and map IGMPv2 Report messages for multicast group
225.0.0.1 to multicast source 2.2.2.2?

A.

ssm-mapping 225.0.0.0 255.255.255.0 2.2.2.2

B.

igmp on-demand

C.

igmp prompt-leave

D.

igmp ssm-mapping enable

Question 4
Single choice

As shown in the figure, the bearer network is deployed in full mesh mode. For example, RTA uses the physical interface ATM 1/0/0. The interface is devised into ATM 10/0.2 connect to RTC and RTD, respectively . The GigabiteEthernet 2/0/0 and GigabitEthernet 3/0/0 interface are used to set up a trunk as the VRRP heartbeat cable. The UMG work in active/standby mode. Media interface connected to RTA and RTB belong to VLAN 10. VRRP is enable at the VLAN interface RTA is the master router. The interface is configured as follows:

Which of the following RTA configurations are correct in VLAN 10?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question 5
Multiple choice

Which of the following operations will make a PE send notifications to its peer in PWE3?

A.

Shut down an AC interface

B.

Delete the L2VPN services from an interface

C.

Shut down a public network tunnel

D.

Disable MPLS

Question 6
Multiple choice

Which of the following can be implemented in an IP backbone network?

A.

RIP

B.

BGP

C.

ISIS

D.

MPLS

Question 7
Single choice

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

Question 8
Multiple choice

Which of the following are conditions for bringing the remote CCC connection Up? (ABE)

A.

The interface that is bound to a CCC connection is physically Up.

B.

MPLS is enabled on the outbound interface of the public network.

C.

MPLS LDP is enabled on the outbound interface of the public network.

D.

If a next hop is specified in CCC configuration, a route to the next hop is available.

E.

If an outbound interface is specified in CCC configuration, the outbound interface is Up.

Question 9
Single choice

On a router, HQoS parameter are configured for the users. The CURP of user 1 is Mbit/s. The CUR and PIR of user 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?

A.

User 2 is of higher priority than user 1

B.

User 1 is of the highest priority among these users

C.

User 3 is of higher priority than user 2

D.

No user can preempt the bandwidth of the other two users

Question 10
Single choice

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 debugging information is generated?

A.

3--4--1--2

B.

1--2--3--4

C.

1--4--2--3

D.

3--2--1--4

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