Try Cisco 642-889 Exam Questions – Updated 2018

By | January 31, 2018

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642-889 exam questions, 642-889 PDF dumps; 642-889 exam dumps:: https://www.dumpsschool.com/642-889-exam-dumps.html (76 Q&A) (New Questions Are 100% Available! Also Free Practice Test Software!)

Latest and Most Accurate Cisco 642-889 Dumps Exam Questions and Answers:

Question: 21

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

A. E-Tree
B. E-LAN
C. E-Line
D. E-Interworking

Answer: C

Explanation:
Explanation:
• 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: 22

When using the Cisco EVC software infrastructure, a double-tagged frame with a customer VLAN of 10 and a service provider VLAN of 150 will be best matched by which encapsulation configuration?

A. encapsulation dot1q 10 second-dot1q any
B. encapsulation dot1q 10 second-dot1q 150
C. encapsulation dot1q 10 second-dot1q 50-200
D. encapsulation dot1q 10
E. encapsulation dot1q 150

Answer: E

Question: 23

Which VPN technology uses the Group Domain of Interpretation as the keying protocol and IPsec for encryption that is often deployed over a private MPLS core network?

A. DMVPN
B. GET VPN
C. SSL VPN
D. L2TPv3

Answer: B

Explanation:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/deployment_guide_c07_554713.html

Question: 24

What is the primary difference between 6PE and 6VPE?

A. 6VPE does not require an MPLS core.
B. 6VPE requires an IPv6-aware core.
C. 6VPE provides IPv6 VPN services.
D. 6VPE tunnels IPv6 packets inside IPv4 packets.

Answer: C

Explanation:
6PE is for transporting ipv6 natively and 6VPE is for ipv6 mpls vpns

Question: 25

Refer to the Cisco IOS XR router output exhibit,

which method is being used to transport IPv6 traffic over the service provider network?

A. 6PE
B. 6VPE
C. native IPv6
D. native IPv4
E. dual stack

Answer: B

Explanation:
NOT SURE THIS MATCHES ANSWER

Question: 26

Which flavor of MPLS Layer 3 VPN has MPLS enabled on PE-CE links?

A. basic
B. CSC
C. inter-AS
D. AToM
E. VPLS

Answer: B

Explanation:
http://www.cisco.com/en/US/docs/ios/12_0st/12_0st14/feature/guide/csc.html

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