Building Cisco Service Provider Next-Generation Networks Part 2 (640-878) Free Practice Test

Question 1

Which two statements about NAT64 are true? (Choose two.)

A. NAT64 packets are translated two times.

B. NAT is performed by the CPE and also by the service provider edge router.

C. NAT64 packets traverse two IPv4 addressing domains.

D. The DNS64 server embeds the IPv4 address from the DNS A record with a preconfigured IPv6 translation prefix.

E. There are two types of NAT64 (stateful or stateless).

Correct Answer: D,E

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Question 2

When upgrading a Cisco ASR 1001 Router, when is the request platform software package expand file bootflash:image-name command required?

A. to perform Cisco IOS ISSU on the standby route processor

B. to run the router using a consolidated package

C. to run the router using individual subpackages

D. to copy the consolidated Cisco IOS XE image to the bootflash:

Correct Answer: C

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Question 3

DRAG DROP
Topology:

Correct Answer:

Explanation:

Question 4

On Cisco IOS XR software, how is LDP enabled on an interface?

A. LDP is automatically enabled globally on all interfaces, when ip cef is enabled globally.

B. LDP is enabled globally on all interfaces, using the mpls ip global configuration command.

C. LDP is enabled on each interface, using the interface command under mpls ldp (MPLS LDP configuration mode).

D. LDP is enabled globally on all interfaces, using the mpls ldp global configuration command.

E. LDP is enabled on each interface, using the mpls ip interface configuration command.

Correct Answer: C

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Question 5

DRAG DROP

Correct Answer:

Explanation:

Question 6

What do both Carrier Grade NAT and NAT64 have in common?

A. both require the use IPv6

B. both are used for tunneling IPv6 in an IPv4 network

C. both are methods for avoiding IPv4 address exhaustion

D. both are only used in carrier networks

Correct Answer: C

Question 7

Which IP addresses are matched by the permit 192.168.80.64 0.0.0.15 access-list entry?

A. 192.168.80.64 to 192.168.80.95

B. 192.168.80.64 to 192.168.80.255

C. 192.168.80.64 to 192.168.80.96

D. 192.168.80.64 to 192.168.80.80

E. 192.168.80.64 to 192.168.80.79

Correct Answer: E

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Cisco Building Cisco Service Provider Next-Generation Networks Part 2 (640-878) Free Practice Test