Cisco 642-885 Exam Dumps To Pass

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Question No. 1

Which multicast routing protocol is most optimal for supporting many-to-many multicast applications?

Answer: B

PIM-Bidirectional Operations

PIM Bidirectional (BIDIR) has one shared tree from sources to RP and from RP to receivers. This is unlike the PIM-SM, which is unidirectional by nature with multiple source trees – one per (S, G) or a shared tree from receiver to RP and multiple SG trees from RP to sources.

Benefits of PIM BIDIR are as follows:

* As many sources for the same group use one and only state (*, G), only minimal states are required in each router.

* No data triggered events.

* Rendezvous Point (RP) router not required. The RP address only needs to be a routable address and need not exist on a physical device.

Question No. 2

A network engineer of an ISP using Cisco IOS XR routers wants to limit the number of prefixes that BGP peers can accept. To accomplish this task, the command maximum-prefix 1000 is used. Which two results of this configuration are expected? (Choose two.)

Answer: A, E

Question No. 3

Which command set is used to implement an IPv6 PIM with the global scope embedded RP address of 2001:DB8::1 on a Cisco IOS XE router?

Answer: D

Question No. 4

The bsr-border router PIM interface configuration command is used for what purpose?

Answer: D

Question No. 5

Which two methods represent IPv6 tunneling implementations? (Choose two.)

Answer: B, C

Question No. 6

Which information does the multicast supported router need to forward the multicast traffic over the source or shared tree?

Answer: C

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