Cisco Building Cisco Service Provider Next-Generation Networks Part 2 - 640-878 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

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?

A. install recovery B. turboboot C. netboot D. install add and install activate E. install rollback

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Correct Answer: B Vote an answer

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Question 2

Refer to the two show output examples below. The switch with the e8ba.70b5.7180 MAC address is the root bridge for which VLAN or VLANs?

A. VLANs 1 and 80 B. VLAN 1 C. VLANs 70 and 80 D. VLANs 1 and 70 E. VLANs 1, 70, and 80 F. VLAN 80 G. VLAN 70

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Correct Answer: F Vote an answer

Question 3

What is the foundation architecture of Cisco Next Generation Networks?

A. IP/MPLS B. TRILL C. IP SLA D. REP

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Correct Answer: A Vote an answer

Question 4

The permit 172.16.32.0 0.0.15.255 access-list entry permits exactly which IP address range?

A. 172.16.32.0 to 172.16.47.255 B. 172.16.32.0 to 172.16.48.255 C. 172.16.32.0 to 172.16.255.255 D. 172.16.32.0 to 172.16.62.255 E. 172.16.32.0 to 172.16.64.255 F. 172.16.32.0 to 172.16.63.255

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Correct Answer: A Vote an answer

Question 5

Refer to the partial configurations exhibit.

What additional configurations are required to enable inter-VLAN routing for VLANs 10 and 20 on the Cisco ME 3400 switch using the metro IP access image?

A. interface Fa0/1 ip address 192.168.10.1 255.255.255.0 ! interface Fa0/2 ip address 192.168.20.1 255.255.255.0 ! router eigrp 1 network 192.168.10.0 network 192.168.20.0 ! B. interface vlan 10 ip address 192.168.10.1 255.255.255.0 ! interface vlan 20 ip address 192.168.20.1 255.255.255.0 ! C. interface Fa0/1 encapsulation dot1q 10 ip address 192.168.10.1 255.255.255.0 ! interface Fa0/2 encapsulation dot1q 20 ip address 192.168.20.1 255.255.255.0
! D. interface Fa0/1 ip address 192.168.10.1 255.255.255.0 ! interface Fa0/2 ip address 192.168.20.1 255.255.255.0 !

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Correct Answer: B Vote an answer

Question 6

Refer to the exhibit.

A network engineer implemented these configurations. However, Intermediate System-to-Intermediate System (IS-IS) neighbors are unable to establish. What is the reason for this error?

A. missing MTU matching value B. missing router IS-IS x command C. missing IP router IS-IS command D. missing network mask E. missing network statement

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Correct Answer: C Vote an answer

Question 7

DRAG DROP
Topology:

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Correct Answer:

Explanation:

Question 8

A customer has installed a second router and copied the configuration from the first router, as shown below. What change is needed to ensure that router 1 is the primary IP address?
Router 1
standby 1 priority 110
standby 1 preempt
Router 2
standby 1 priority 120
standby 1 preempt

A. increase the priority on router 1 to 119 B. increase the priority on router 2 to 130 C. decrease the priority on router 1 to 109 D. remove standby 1 preempt from router 1 E. decrease the priority on router 2 to 109

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Correct Answer: E Vote an answer

Question 9

You have just enabled IS-IS on the lab testing network. You notice that IS-IS is not using the optimal path selection based on the interface bandwidth. Currently, the IS-IS routing process seems to be selecting the best path based on the hop count.
What configuration change can you make to cause IS-IS to select the optimal path based on the interface bandwidth?

A. Enable a narrow-style IS-IS metric. B. Change the interface bandwidth by using the bandwidth interface configuration mode command. C. Change the default auto-cost reference bandwidth to a higher value. D. Change the default IS-IS metric on each of the router interfaces to better correspond to the interface bandwidth. E. Enable a wide-style IS-IS metric.

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Correct Answer: D Vote an answer

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Question 10

Which spanning-tree mode can be used to map several VLANs to a single spanning-tree instance?

A. MST B. PVST+ C. RSTP D. PVRST+

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Correct Answer: A Vote an answer