Preparation Guide For Cisco 642-889 Exam

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Question No. 1

Which two statements regarding Cisco 6PE operations are correct? (Choose two.)

Answer: B, C

Question No. 2

VPWS/EoMPLS offers which type of Ethernet services as defined by the MEF?

Answer: C

* E-Line is based on a point-to-point Ethernet Virtual Connection. Two E-Line services are defined:

— Ethernet Private Line (EPL): A very simple and basic point-to-point service characterized by low frame delay, frame delay variation, and frame loss ratio. No service multiplexing is allowed, and other than a committed information rate (CIR) no class of service (CoS) (Bandwidth Profiling) is allowed.

— Ethernet Virtual Private Line (EVPL): A point-to-point service wherein service multiplexing (more than one Ethernet Virtual Connection) is allowed. The individual Ethernet Virtual Circuits can be defined with a rich set of Bandwidth Profiles and Layer 2 Control Protocol Processing methods as defined by the Metro Ethernet Forum.

Question No. 3

When implementing VPLS on Cisco IOS XR routers, the VPLS PW neighbors can be statically defined under which configuration mode?

Answer: C

Question No. 4

Which service can be used to extend the same broadcast domain across the WAN to multiple customers?

Answer: A

Question No. 5

Which command is used in Cisco IOS XE to display the contents of the LIB?

Answer: A

Question No. 6

Which sentence describes the primary difference between E-Line and E-LAN?

Answer: A

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