Cisco 640-878 Practice Exam Questions

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Question No. 1

On Cisco IOS XR software, which set of commands enables OSPF area 0 on the Gi0/0/0/0 interface that has an IPv4 IP address of 192.168.1.1/24?

Answer: C

Question No. 2

You want to configure HSRP between a Cisco IOS and a Cisco IOS XR router for the 192.0.2.0/24 subnet. Half of the PCs on the 192.0.2.0/24 subnet are configured to use 192.0.2.1 as the default gateway, and the other half of the PCs are configured to use 192.0.2.254 as the default gateway. The intent is to load balance the traffic across both routers.

Which two IOS and IOS XR configurations are needed? (Choose two.)

Answer: A, D

Question No. 3

Which three statements about OSPFv2 or OSPFv3 authentication are true? (Choose three.)

Answer: A, B, D

Question No. 4

Which procedure is used as the last resort disaster recovery procedure to completely replace the currently installed IOS XR software on Cisco IOS XR routers?

Answer: B

Question No. 5

Refer to the exhibit.

Which three commands are required on interface fastethernet 5/6 in order to create a trunk link between another Cisco Catalyst Switch? (Choose three.)

Answer: A, B, D

Question No. 6

What is dual IOS mode on the Cisco ASR 1001 Router?

Answer: B

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