From this figure, we can conclude that

R4andee8c.aOc2.baf3establishedIPv4,IPv6ofIS-ISNeighbor

R4andee8C. aOe2.baf3only establishedIPv6ofIS-ISNeighbor

R4andee8c.aOc2.bat3only establishedIPv4ofIS-ISNeighbor

When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong about using BGP to exchange routing information between PEs and CEs?

whenPEandCEbetweenBGPWhen exchanging routing information, if twoVPNThe autonomous system the site is in uses the same privateASnumber, can be passed throughASThe number replacement function is to use any specifiedASreplace the received private network route with theASnumber to preventASRoutes are discarded due to duplicate numbers

existCEIn the case of multi-homing, enableBGP ASThe number substitution function may cause routing loops that can be passed throughBGP SoDpreventVPNIntra-site routing loops

whenPEandCEbetweenBGPWhen exchanging routing information, if twoVPNThe autonomous system the site is in uses the same privateASnumber, can be passed throughASThe number replacement function is to use any specifiedASreplace the received private network route with theASnumber to preventASRoutes are discarded due to duplicate numbers

existHub&Spokescene, whenHub-CEandHub-PEuseIGPTimeSpoke-PEandSpake-CEcannot makeEBGP

whenPEandCEbetweenBGPWhen exchanging routing information, you do not need toPEPerform private network route import on theBGPoperation

What fields are added in Update in order to advertise IPv6 routes in BGP4+.

A new path attribute:MP_REA, CH_NLRI

a new oneNLRITypes of'Pv6_NLR,which carryIPv6 NLRI prefix lengthandIPv6 NLRI prefix

A new path attribute:MP_UNREA, CH_NLRI

A new path attribute:MP_REA, CH_NLRI

a new path attribute:IPv6_REA, CH_NLRI

About the difference between NSR and NSF, which is correct?

NSFMust rely on neighbor routers to complete

NSFCan be done without neighbor routers

NSRMust rely on neighbor routers to complete

NSFMust rely on neighbor routers to complete

NSRandNSFBy6Requires neighbor router to complete

When troubleshooting a network, if you need to confirm the business traffic path, which of the following may need to be done ()

Confirm data link layer service traffic path

Confirm the network layer service traffic path

Investigate service traffic path planning in the network design phase

Confirm data link layer service traffic path

Confirm the network layer service traffic path

Investigate service traffic path planning in the network design phase

Confirm the frequency of failure

The Discovery message of LDP is used for neighbor discovery, and LDP has different discovery mechanisms when discovering neighbors. The following statement about the Discovery message in the basic discovery mechanism is correct

Purpose of the messageIPaddress is multicastIPaddress224.0.0.2

This message is encapsulated inUDPIn the message, the destination port number is646

TCPAfter the connection is establisheD. LSRdo not continue sendingHello Message

Purpose of the messageIPaddress is multicastIPaddress224.0.0.2

This message is encapsulated inUDPIn the message, the destination port number is646

The message is sent to the specifiedLDP Peer

Which of the following actions may affect the normal operation of the customer's network?

Routing Protocol Configuration Changes

According to this picture, cooked I'] can be judged?

R1ofGEO/O/OinterfaceIS-ISThe interface type isLevel-1-2

R1ofGEO/O/Ointerface is enabledIS-IS IPv6

R1ofGE0/0/1Interface is not enabledIS-IS IPv6

R1ofGE0/0/1interfaceIS-ISThe interface type isLeve-1

R1ofGEO/O/OinterfaceIS-ISThe interface type isLevel-1-2

R1ofGEO/O/Ointerface is enabledIS-IS IPv6

According to this diagram, can we break the

system-IDforee8c.a0c2.baf2device whose type isLevel-1-2

system-IDforee8c.a0c2.baf2The device' whose type isLevel-1

system-IDforee8c.a0c2.baf2device whose type isLevel-1-2

A campus deploys OSPF to implement network interworking. The LSDB of R2 is shown in the figure. From this LSDB. it is possible toWhat information was obtained?

R2existOSPFThe default route is delivered in the process

ArealNone inType3 LSA. maybeR2in the area1In the correct directiontype3 LSAfiltered

R2WillType7 LSAThe default route is converted toType5 LSAdefault route for

R2existOSPFThe default route is delivered in the process

Which of the following reasons may cause the hosts in the same--VLAN LAN to fail to communicate with each other

port isolation is configured on the switch

the wrong port is configured on the machine, andMA, Caddress binding

interface is artificialshutdownor the physical interface is damaged

switchMA, Caddress learning errors

port isolation is configured on the switch

the wrong port is configured on the machine, andMA, Caddress binding

interface is artificialshutdownor the physical interface is damaged

switchMA, Caddress learning errors

Ethernet is a network that supports broadcasting, and once there is a loop in the network, this simple broadcasting mechanism can cause catastrophic consequences. Which of the following phenomena may be caused by loops

The device cannot log in remotely

pass throughPINGSerious packet loss during network test with command

use on the deviceDISPLAY INTERFA, CEcommand to view interface statistics, it is found that the interface receives a large number of broadcast message

The device cannot log in remotely

pass throughPINGSerious packet loss during network test with command

use on the deviceDISPLAY INTERFA, CEcommand to view interface statistics, it is found that the interface receives a large number of broadcast message

As shown in the figure, configure a backhaul summary route 10.0.0.0/24 on the border route RT1. next hop to RT2. At the same time, the default route to the external network is configured. At this point, a routing black hole will appear. The following is about routingIs the black hole statement correct? (multiple choice)

Configuring black hole routing can solve the routing black hole problem

Precise routing $ can always avoid routing black holes

If the terminal in the network sends data packets to the network segment that does not appear on the internal network, a loop will occur

Configuring black hole routing can solve the routing black hole problem

Routing black hole has no impact on the network and can be ignored

Precise routing $ can always avoid routing black holes

If the terminal in the network sends data packets to the network segment that does not appear on the internal network, a loop will occur

esigth uses different colors to distinguish different alarm levels, red represents emergency, orange represents important, and yellow representsThe table is secondary, and blue represents the prompt. Which of the following statements about different alarm levels is correct: (multiple choice)

Prompt: A potential or imminent business-impacting failure has been detecteD. but currently has little business impact

Minor: There is currently a certain impact on the business, but corrective actions are required to prevent serious failure alarms

Urgent: Alerts that have affected the business and require immediate corrective action

Important: An alarm that has affected the business and will have serious consequences if not handled in time

Prompt: A potential or imminent business-impacting failure has been detecteD. but currently has little business impact

Minor: There is currently a certain impact on the business, but corrective actions are required to prevent serious failure alarms

Urgent: Alerts that have affected the business and require immediate corrective action

Important: An alarm that has affected the business and will have serious consequences if not handled in time

On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements are true?

If SI is powered off, R1 directly uses the backup path to forward packets to R3.

If BFD (with default detection parameters) is enabled on the entire network and the link between R2 and SI is disconnected, R1 can quickly detect the OSPF adjacency fault.

If the link between R1 and SI is disconnected, R1 directly uses the backup path to forward packets to R3.

No backup path can be established between R1 and 10.0.3.3/32.

If SI is powered off, R1 directly uses the backup path to forward packets to R3.

If BFD (with default detection parameters) is enabled on the entire network and the link between R2 and SI is disconnected, R1 can quickly detect the OSPF adjacency fault.

If the link between R1 and SI is disconnected, R1 directly uses the backup path to forward packets to R3.

On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements is false?

If the link between R1 and SI is disconnected, Rl recalculates the optimal path to R3 and performs path switching instantly.

If the link between R2 and SI is disconnected, R1 recalculates the optimal path to R3 and performs path switching instantly.

If the link between R1 and SI is disconnected, R1 directly uses the backup path to forward packets to R3 because FRR is enabled on R1.

If the link between R1 and SI is disconnected and you check neighbor information on R1, the neighbor relationship between R1 and R2 will instantly display Down.

On the network shown in the figure, EBGP peer relationships are established between neighboring routers through directly connected interfaces. The router ID of each router is 10.0.X.X, and the AS number is 6500X, where X is the number of the router. Both Rl and R4 have static routes to 192.168.1.0/24, which are imported to BGP through the import-route command. R3 is configured with the peer y.y.y.y as-path-filter 1 import command for all peers. Which of the following sets of commands enables R3 to select the route with the longest AS_Path to 192.168.1.0/24?

jp as-path-filter 1 deny .*6500 ip as-path-filter 1 permit .*

ip as-path-filter 1 deny A65002 ip as-path-filter 1 deny A65005 ip as-path-filter 1 permit .*

ip as-path-filter 1 permit .* ip as-path-filter 1 deny 65001s ip as-path-filter 1 deny A65005

ip as-path-filter 1 deny 65001s ip as-path-filter 1 permit .*

On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. The import-route isis level-2 into level-1 command is configured on R2 and R5. In AS 65000, R1, R3, R4, and R6 each establish IBGP peer relationships with R2 and R5. R2 and R5 are RRs, and R1, R4, R3, and R6 are clients. The IBGP peer relationships are established using Loopback0. The IP address of Loopback0 on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command. Which of the following statements are true?

The route 192.168.2.0/24 in the routing table of R4 has two different outbound interfaces.

The routing table of R1 contains the route 192.168.2.0/24.

The routing table of R4 contains two equal-cost default routes.

The route 192.168.2.0/24 in the routing table of R4 has two different outbound interfaces.

The routing table of R1 contains the route 192.168.2.0/24.

The routing table of R1 contains two equal-cost default routes.

Huawei H12-831_V1.0 Practice Test 7 - Free Online Exam Prep & Questions

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