JN0-660 Online Practice Questions and Answers

Your are the administrator for a network that uses IS-IS as its IGP. As the network grows, you find that the protocol's default capabilities for setting metrics is limiting your options. Which feature can you implement to provide a larger range of metric configuration capabilities?

A. extended metrics

B. wide metrics

C. expanded metrics

D. full metrics

Which operational mode command displays the number of configured forwarding classes?

A. show interfaces queue ge-1/0/0

B. show interfaces terse

C. show class-of-service interface

D. show forwarding classes

Click the Exhibit button.

CE1, CE2, and CE3 are part of a single VPLS VPN. R1, R2, and R3 are PEs in the provider network, and have just been powered on. The VPLS domain has converged, and frames have passed between all CEs in the last minute. An Ethernet frame has just arrived at R3 from CE3. It has a source MAC address of CE3 and a destination MAC address of CE1.What does R3 do with the Ethernet frame?

A. Drops the packet as the destination MAC address is not for R3.

B. Drops the packet as the destination MAC address is not in R3's MAC table.

C. Forwards the packet to R1 only.

D. Forwards the packet to R1 and R2.

Click the Exhibit button.

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

Click the Exhibit button.

Customer A wants a Layer 3 VPN between their two sites. To support this, you purchase a carrier-ofcarriers solution from ISP2. Referring to the topology in the exhibit, how many labels does PE1 push onto data packets destined for PE2?

A. 1

B. 2

C. 3

D. 4

How does a router use BGP to deflect a distributed denial-of-service attack against a prefix at all edge routers in the same AS?

A. It advertises the prefix with a local preference that is higher than any other node, and sets the next hop to a unicast route that has a discard next hop.

B. It advertises the prefix with a local preference that is higher than any other node and sets the next hop to self.

C. It advertises the prefix with a local preference that is lower than any other node and sets the next hop to a unicast route that has a discard next hop.

D. It advertises the prefix with a local preference that is lower than any other node and sets the next hop to self.

You are using the 224.2.0.0/16 multicast address range for SSM applications in your network. However, since you have deployed SSM in your network, SAP/SDP application communications have not been functioning properly.

What must you do to allow the SSM and SAP/SDP applications to function properly?

A. Use the 232.0.0.0/3 address range for SAP/SDP applications.

B. Use the 232.0.0.0/B address range for SSM applications.

C. Use the 224.1.0.0/16 address range for SAP/SDP applications.

D. Use the 224.1.0.0/16 address range for SSM applications

You are asked to implement PIM-SM in your network, which consists of equipment from multiple vendors.

You must configure multiple RP discovery methods in this environment for redundancy purposes. MSDP

cannot be used.

Which two statements are true? (Choose two.)

A. If you configure a static RP and auto-RP, auto-RP will be preferred and used by all routers.

B. If you configure a static RP and a BSR, the BSR will be preferred and used by all routers.

C. Auto-RP can be used to provide RP failover and load sharing between the elected RPs.

D. The BSR can be used to provide RP failover and load sharing between the elected RPs.

Refer to the exhibit.

You are implementing a Layer 3 VPN between Site 1 and Site 2. You notice that you are not sharing routes between PE1 and PE2. You have verified that MPLS and RSVP are functioning correctly. Referring to the exhibit, what is causing the problem?

A. The multihop feature is not enabled.

B. The next hop for the VPN routes is unusable.

C. The Layer 3 VPN NLRI has not been enabled on PE1.

D. The PE2 BGP session is restarting.

Which action is required for BGP confederations to function?

A. Remove the well-known private AS numbers.

B. Change the maximum number of times an AS can be in an AS path.

C. Replace the neighbor AS number with the local AS number.

D. Set the confederation autonomous system to include private AS number(s).