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H31-161 Exam Dumps - HCIE-Carrier IP (Written)

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Question # 17

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?

A.

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

B.

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

C.

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

D.

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

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Question # 18

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?

A.

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

B.

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

C.

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

D.

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

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Question # 19

The edge routers of the MPLS network, partial interface configurations on the IP access side are as

follows:

[Quidway]diffserv domain default

[Quidway-dsdomain-default]ip-dscp-inbound 10 phb ef green

[Quidway-dsdomain-default]mpls-exp-outbound ef green map 5

[Quidway-dsdomain-default]mpls-exp-inbound 4 phb ef green

[Quidway-dsdomain-default]ip-dscp-outbound ef green map 18

[Quidway-dsdomain-default]quit[Quidway] interface GigabitEthernet 2/0/0

[Quidway-GigabitEthernet2/0/0] trust upstream default

[Quidway-GigabitEthernet2/0/0] port-queue ef pq shaping 20 outbound

Which of the following statements about the preceding configurations are true?

A.

The trust upstream default command maps the DSCP priority to the corresponding EXP value when an IP packet enters the MPLS network and maps the EXP value to the corresponding DSCP priority when an IP packet leaves the MPLS network.

B.

If an IP packet with a DSCP value of 10 is sent to the MPLS network (non-PHP node) from

GigabitEthernet 2/0/0, the corresponding EXP value is 5. If an MPLS packet with an EXP value of 4 is sent from GigabitEthernet 2/0/0, the DSCP value of the corresponding IP packet remains unchanged.

C.

The port-queue ef pq shaping 20 outbound command configures PQ scheduling and a maximum of 20 Mbit/s bandwidth for the EF queue when GigabitEthernet 2/0/0 sends IP packets.

D.

When GigabitEthernet 2/0/0 sends IP packets, the bandwidth of these sent IP packets can reach 1 Gbit/s if the EXP value is 4.

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Question # 20

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

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Question # 21

Which statement about the configuration of route target (RT) and route distinguisher (RD) is true?

A.

If routes need to exchange between two VPNs, the value of import RT of one VPN must be partially the same as Export RT of the other VPN.

B.

RD and RT of a VPN instance cannot be the same as those of another VPN instance on the same PE.

C.

If routers need to exchanged two VPNs, the value of import RT of one of the same as that of RT of the other VPN.

D.

Two instances of a VPN share an RT.

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Question # 22

acl number 2000

rule 15 permit source 225.0.0.0 0.0.0.255

#

interface Ethernet6/1/1

ip address 40.1.1.4 255.255.255.0

igmp version 3

igmp group-policy 2000

igmp enable

pim sm

#

The preceding are partial router configurations. Which of the following behaviors does Ethernet

6/1/1 perform after receiving Internet Group Management Protocol Version 2 (IGMPv2) Report

messages for multicast groups 225.0.0.1 and 225.0.1.1?

A.

Create a record for group 225.0.0.1.

B.

Create a record for group 225.0.1.1.

C.

Do not create a record for group 225.0.1.1.

D.

Do not create a record for group 225.0.0.1.

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Question # 23

What is the SSM group address range the IANA allocates for IPv4?

A.

232.0.0.0/24

B.

225.0.0.0/8

C.

232.0.0.0/8

D.

225.0.0.0/24

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Question # 24

Which feature can make OSPF (or IS-IS) advertise MPLS TE tunnels as links?

A.

IGP Shortcut

B.

FA

C.

FRR

D.

SRLG

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