642-889 Cisco

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Sample Questions

Free 642-889 Sample Question 1

Which type of VPN requires a full mesh of vi rtual circuits to provide optimal site-to-  site connectivity?

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Free 642-889 Sample Question 2

Which three Layer 3 VPN technologies are based on the overlay mode l? (Choose three.)

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Free 642-889 Sample Question 3

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

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Free 642-889 Sample Question 4

What is the primary difference b etween 6PE and 6VPE?

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Free 642-889 Sample Question 5

Refer to the Cisco IOS XR  router output exhibit,

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

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Free 642-889 Sample Question 6

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

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Free 642-889 Sample Question 7

Which MP-BGP address family must be conf igured to use VPLS  autodiscovery in a  Cisco IOS XR router?

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Free 642-889 Sample Question 8

In MPLS Layer 3 VPN implementations, what  is used on the PE router to isolate  potential overlapping routing information between different customers?

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Free 642-889 Sample Question 9

Within the service provider IP/MPLS core  network, what must be implemented to  enable Layer 3 MPLS VPN services?

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Free 642-889 Sample Question 10

In MPLS Layer 3 VPN imple mentations, whic h mechanism is used to control which  routes are imported to a VRF?

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Free 642-889 Sample Question 11

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

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Free 642-889 Sample Question 12

Which Cisco IOS XR BGP configuration command is required to enable MP-BGP  to carry IPv6 VPN routes?

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Free 642-889 Sample Question 13

Which statement regarding the Cisco IOS  BGP configuration exhibit is correct?

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Free 642-889 Sample Question 14

When implementing MPLS Layer 3 VPNs w ith customers running OSPF as the CE-  PE routing protocol, the service provider MPLS backbone looks like what to the CE  routers?

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Free 642-889 Sample Question 15

When imple menting MPLS Layer 3 VPNs w ith customers running OSPF as the CE-  PE routing protocol, which situation will require a sham link to be implemented in  the MPLS backbone?

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Free 642-889 Sample Question 16

On Cisco IOS and IOS XE Layer 3 MPLS VPN implementations, when  redistributing the customer RIP routes into MP-BGP, the RIP metric is copied into which BGP attribute?

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Free 642-889 Sample Question 17

Which option is used as a loop prevention mechanism to support MPLS VPN customers with multihomed sites?

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Free 642-889 Sample Question 18

Refer to the partial Cisco IOS XR PE router configuration e xhibit for supporting a  Layer 3 MPLS VPN cust omer using BGP as the CE-to-PE routing protocol.

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The service provider AS number is 64500,  the customer AS number is 64501, and  the customer CE router is 10.1.1.1. What is missing in the configuration?

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Free 642-889 Sample Question 19

Based on the Cisco IOS XR VR F configuration exhibit,

https://dumps4download.us/exam/wp-content/uploads/2016/01/331.png

which two data flows between the MPLS  VPNs will be allowed? (Choose two.)

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Free 642-889 Sample Question 20

Refer to the partial Cis co IOS XR PE  router VRF configuration exhibit.

https://dumps4download.us/exam/wp-content/uploads/2016/01/341.png

To implement a central-service VPN supporting both customer1 and customer2,  what will be the required corresponding VRF configuration on the central-service-  server PE router?

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Free 642-889 Sample Question 21

Which two statements about implementing a separate MPLS VPN to provide customers Internet access are correct? (Choose two.)

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Free 642-889 Sample Question 22

Which CE-to-PE routing protocol implements the down bit as a loop prevention mechanism?

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Free 642-889 Sample Question 23

When you are using OSPF as the CE-to- PE routing protocol in MPLS VPN  implementations, an OSPF route from customerA site 1 in Area 0 will appear as  which kind of OSPF route in cust omerA site 2, also in Area 0?

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Free 642-889 Sample Question 24

In Layer 3 MPLS VPN implementations, if  some of the VPNv4 routes on one PE  router do not appear on another PE  router, what could be the problem?

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