Download New Latest (May) Cisco 640-878 Actual Tests 31-40

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QUESTION 31

A service provider needs to implement amanaged CE device that supports Cisco IOS ISSU, and the current CE support staff is highly trained in Cisco IOS only. Which Cisco router platform should the service provider implement as the managed CE device?

 

A.

Cisco ASR1K

B.

Cisco ISR-G2

C.

Cisco ASR9K

D.

Cisco 12000 GSR

E.

Cisco 7200

F.

Cisco 7600

 

Answer: A

Explanation:

 

 

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QUESTION 32

Your switch network has been configured to support multiple VLANs. In order for the users on one VLAN to communicate with users on another VLAN, which additional configuration isrequired?

 

A.

Enable a routing protocol like EIGRP on a router or on a Layer 3 capable switch

B.

Enable inter-VLAN routing on a router or on a Layer 3 capable switch

C.

Enable a switch virtual interface on the router, using the interface vlan global configuration command

D.

Enable a switch virtual interface on the switch, using the encapsulation dot1q

E.

subinterface configuration command

F.

Enable IP routing on a Layer 2 switch

 

Answer: B

 

 

QUESTION 33

Which three statements about service provider network requirements are true? (Choose three.)

 

A.

Service provider networks are becoming more specialized, with providers offering only one service.

B.

Service providers connect customers to the Internet.

C.

Jitter and packetloss are no longer an issue.

D.

Multiple access technologies are supported.

E.

Customers can connect directly using copper, wireless, or fiber-optic links.

 

Answer: BDE

 

 

QUESTION 34

HOTSPOT

 

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Answer:

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A.

 

B.

 

C.

 

D.

 

 

Answer:

 

 

QUESTION 35

Which three are common ISP access network technologies? (Choosethree.)

 

A.

DSL

B.

Cable modem

C.

DWDM

D.

MPLS

E.

PON

F.

MP-BGP

 

Answer: ABE

Explanation: http://blog.ioshints.info/2010/02/passive-optical-networks.html- PON

 

 

QUESTION 36

HOTSPOT

 

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Answer:

 

 

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A.

 

B.

 

C.

 

D.

 

 

Answer:

 

 

QUESTION 37

Refer to the partial Cisco IOS router configuration exhibit.

 

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Which statement is true?

 

A.

To support the subinterface configuration, the Fa0/0 main interface configuration is missing the encapsulation dot1Qcommand.

B.

The Fa0/0 interface/subinterfaces are configured correctly to operate as a trunk port to provide inter-VLAN routing for three VLANs (VLANs 1, 2, and 3).

C.

To provide inter-VLAN routing, the Fa0/0.1, Fa0/0.2 and Fa0/0.3 subinterface configuration is missing the encapsulation dot1Q vlan-id subinterface configuration

 

 

command.

D.

To provide inter-VLAN routing, the router is missing the vlan 1, vlan 2, and vlan 3 global configuration commands.

 

Answer: C

 

 

QUESTION 38

Refer to the exhibit.

 

clip_image011

 

Which three statements about MPLS LDP operations are true?

 

A.

The incoming label for 10.2.10.1/32 is 16010 (which is allocated by the local router), and the outgoing label is 22 (as advertised by the next-hop router).

B.

The 16003 and 16010 labels are learned from the 192.168.112.40 LDP neighbor.

C.

The ImpNull outgoing label for the 192.168.102.0/24 network means that the outgoing label should be removed when sending packets to the 192.168.112.40 next-hop router, when the incoming label is 16003.

D.

The ImpNull outgoing label for the 192.168.102.0/24 network means that the local router has not received a label for that network from its neighbor.

E.

The Unlabeled outgoing label for 10.10.10.100/32 indicates that a label pop is required when sending packets to the 10.10.10.1 next-hop router.

F.

The outgoing label of22 for 10.2.10.1/32 is learned from the 192.168.112.40 LDP neighbor.

 

Answer: ACF

Explanation: http://www.cisco.com/en/US/docs/ios/12_2t/12_2t2/feature/guide/ldp_221t.html

 

 

QUESTION 39

Which Cisco router platform supportsrunning either the Cisco IOS or IOS XR operating system?

 

A.

Cisco CRS

B.

Cisco ASR9k

C.

Cisco ASR1K

D.

Cisco ISR-G2

E.

Cisco 12000 GSR

 

Answer: E

Explanation: The CRS-1 platform natively runs the IOS XR operating system. The c12000 platform, originally being an IOS router, can be upgraded to run IOS XR. However, c12000 hardware, including line cards (LC) as well as route processors (RP), must be checked for XR compliance.

TURBOBOOT refers to a fresh boot of the router from ROMMON. TURBOBOOT is required if an IOS router is being converted to IOS XR or as a last resort disaster recovery in the case of CRS-1. If the router is already running an IOS XR image, there is no need to TURBOBOOT the router for an upgrade or downgrade. Later sections in thischapter address the upgrade scenario. This section deals with a fresh boot of the router from ROMMON.

A new c12000 platform can be ordered prebaked as an IOS XR router; however, there will always be cases where an IOS running c12000 needs to install IOS XR.

 

 

QUESTION 40

On Cisco IOS XR software, what are the four valid address-family configuration command options in static route configuration mode? (Choose four.)

 

A.

address-family ipv4 unicast

B.

address-family ipv6 unicast

C.

address-family ipv4 multicast

D.

address-family ipv6 multicast

E.

address-family vpnv4

F.

address-family vpnv6

 

Answer: ABCD

Explanation:

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