JN0-660 Online Practice Questions and Answers

In which two ways does VPLS populate the MAC table? (Choose two.)

A. dynamically using BGP

B. dynamically using the source MAC address on received frames

C. dynamically using LDP

D. statically using CLI

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You are asked to configure an OSPF network based on the topology shown in the exhibit. You must keep the link-state database in Area 1 as small as possible. What will accomplish this?

A. Area 0 should be configured as a stub area so that it will not announce routes into Area 1.

B. Area 1 should be configured as an NSSA to limit the size of the link-state database.

C. Area 1 should be configured as a stub area with no-summaries to limit the size of the link- state database.

D. Area 0 should be configured with a virtual link to R4 to limit the size of the Area 1 link-state database.

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Referring to the exhibit, your network management systems have alerted you to a loss of connectivity to the CE2 router in your Layer 3 VPN. The loopback address of the CE router is 10.10.1.1/32.Which operational command on PE2 verifies connectivity across the PE-CE link?

A. ping 10.10.1.1

B. ping 10.10.1.1 table customer-a

C. ping 10.10.1.1 instance customer-a

D. ping 10.10.1.1 routing-instance customer-a

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Referring to the OSPF link metrics in the exhibit, which path will traffic from R6 take to reach R1?

A. R6, R3, R2, R4, R1

B. R6, R3, R2, R1

C. R6, R5, R4, R1

D. R6, R5, R3, R2, R4, R1

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In the exhibit, R1 and R2 have a static default route configured that points toward the provider. Both routers redistribute the default route into OSPF. R2 is the preferred gateway to reach the provider. R1 is the backup gateway. All link metrics are equal. Which two steps ensure that traffic to the provider flows through R2 while the network is working properly? (Choose two.)

A. Redistribute the default route as a Type 1 external route on router R1 and a Type 2 external route on router R2.

B. Redistribute the default route as a Type 2 external route on router R1 and a Type 1 external route on router R2.

C. Modify the preference value of the default route on router R1 so that it is less preferred than OSPF external routes.

D. Modify the preference value of the default route on router R2 so that it is more preferred than OSPF external routes.

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On your MX Series router, traffic using the less-critical scheduler is out of profile. All other data is currently in profile. Referring to the exhibit, which statement is correct?

A. The less-critical queue can use the remaining bandwidth.

B. The less-critical queue cannot buffer traffic, so traffic is dropped.

C. The less-critical queue is serviced before the critical queue.

D. The less-critical queue cannot use the remaining bandwidth.

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What is the significance of RIB groups, as shown in the exhibit?

A. RIB groups alter the multicast RPF check table to inet.0.

B. RIB groups alter the multicast RPF check table to inet.2.

C. RIB groups alter the multicast RPF check table to inet.4.

D. RIB groups alter the multicast RPF check table to inet.3.

You have established an MSDP peering between multicast domains for your AS and a neighboring AS. You are concerned about unnecessary flooding or looping of source active messages between MSDP peers. Which MSDP mechanism is used to prevent this problem?

A. The receiving MSDP peer performs a multicast RPF check to ensure that the SA messages are forwarded away from only the originating multicast source.

B. The receiving MSDP peer sends register-stop messages towards the originating RP that forwarded the SA messages.

C. The receiving MSDP peer performs amulticast peer-RPF check to ensure that the SA messages are forwarded away from only the originating RP.

D. The receiving MSDP peer sends prune messages to all upstream neighbors to avoid receiving additional SA messages.

-- Exhibit

-- Exhibit -Click the Exhibit button.

Which configuration parameter would create a routing table as shown in the exhibit?

A. routing-options forwarding-table export load-balance-policy

B. multipath

C. protocols bgp export load-balance-policy

D. multihop

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-- Exhibit -

Click the Exhibit button.

Referring to the exhibit, your network contains eight devices participating in OSPF Area 0, and they are all in a full IBGP mesh. R7 is learning the 172.27.0.0/24 network and is injecting this route into OSPF and BGP. You must ensure that on R2, all traffic destined to the 172.27.0.0/24 network from R1 uses the R2to-R7 RSVP LSP through your core network.

How should you accomplish this behavior?

A. Use the install active feature on R2.

B. Use the install feature on R2.

C. Use OSPF and BGP import policies on R2.

D. Use OSPF and BGP export policies on R2.