H12-831 Online Practice Questions and Answers

As shown in the figure, OSPF is enabled on all interfaces of the router, and the ip address identified in the figure is the device's IP address.

Loopback0 presses the IP address of the port, RI, R2, R3EJLoopbacD is advertised in the area 1, R4

LoopbacfkD advertises in area D and which of the following functional addresses can be pinged between the LoopbackD announcements of R5 and R5 in area 2?

A. 10.0.3.3 10.0.5.5

B. 10.0.4.4and10.0.2.2

C. 10.0.2.2and10.0.3.3

D. 10.0.2.2 10.0.5.5

As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?

A. 100

B. 150

C. 50

D. 200

Which of the following BGP routing attributes cannot control BGP routing?

A. MED

B. AS Path

C. Community

D. Originator ID

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

A. ArealNone inType3 LSA. maybeR2in the area1In the correct directiontype3 LSAfiltered

B. Area 1forNSSAarea

C. R2WillType7 LSAThe default route is converted toType5 LSAdefault route for

D. R2existOSPFThe default route is delivered in the process

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

A. TCPAfter the connection is establisheD. LSRdo not continue sendingHello Message

B. Purpose of the messageIPaddress is multicastIPaddress224.0.0.2

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

D. The message is sent to the specifiedLDP Peer

Which of the following will not cause the VRRP backup group to flap?

A. both endsVRRPBackup group preemption delay configuration is inconsistent

B. BackupDevice Interface Packet Loss

C. the time interval of the notification message is too small

D. transmissionVRRPLink flapping of advertisement packets

During the daily troubleshooting process, engineers may need to view some alarm information of the device. Run the terminal command to enable the terminal to display the debugging/log/alarm information sent by the information center.

A. monitor

When there are multiple redundant links in the IS-S network, multiple equal-cost routes may appear. Which of the following statements is false about equal-cost routing within an IS-IS network?

A. When the number of equal-cost routes in the network is greater than the number configured by the command, and these routes have the same priority, Preferred next hop deviceSystem IDLarge routes for load balancing

B. If load sharing is configured, the traffic will be evenly distributed to each link

C. After configuring equal-cost route priorityJS-ISWhen the device forwards the traffic reaching the destination network segment, it will not adopt the load balancing method, but forward the traffic to the next hop with the highest priority

D. For each route in the equal-cost route, a priority can be specified, and the route with higher priority will be preferred. the rest as backup routes

After the VLAN-based MA, C address flapping detection function is configured, if the MA, C address flaps. The interface can be configured to perform actions according to requirements. Which of the following is NOT a configurable action?

A. Traffic filtering

B. send alert

C. interface blocking

D. MA, Caddress blocking

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

A. port isolation is configured on the switch

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

C. interface is artificialshutdownor the physical interface is damaged

D. switchMA, Caddress learning errors