Building Cisco Service Provider Next-Generation Networks Part 2 (SPNGN2)

Here you have the best Cisco 640-878 practice exam questions

You have 122 total questions to study from
Each page has 5 questions, making a total of 25 pages
You can navigate through the pages using the buttons at the bottom
This questions were last updated on October 13, 2025
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Question 1 of 122

When configuring an ACL entry, which network and wildcard mask matches only IP addresses 10.8.144.0 to 10.8.151.255?

10.8.144.0 0.0.3.255

10.8.144.0 0.0.7.255

10.8.144.0 0.0.15.255

10.8.144.0 0.0.252.255

10.8.144.0 0.0.248.255

10.8.144.0 0.0.240.255

Correct Answer: B

Question 2 of 122

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

192.168.80.64 to 192.168.80.255

192.168.80.64 to 192.168.80.96

192.168.80.64 to 192.168.80.95

192.168.80.64 to 192.168.80.80

192.168.80.64 to 192.168.80.79

Correct Answer: E

Question 3 of 122

Which two statements about NAT444 are true? (Choose two.)

NAT444 packets are translated three times.

NAT packets traverse three IPv4 addressing domains.

NAT444 needs to work together with DNS64.

There are two types of NAT444 (stateful or stateless).

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

Correct Answer: B, E

Question 4 of 122

Refer to the exhibit.
Exam 640-878: Question 4 - Image 1

The access list has been configured on the Gi0/0/0/0 interface in the inbound direction. Which four packets that are sourced from 10.1.1.1 TCP port 1060, if they are routed to the Gi0/0/0/0 interface, will be permitted? (Choose four)

destination IP address: 192.168.15.37, destination TCP port: 8080

destination IP address: 192.168.15.41, destination TCP port: 8080

destination IP address: 192.168.15.49, destination TCP port: 8080

destination IP address: 192.168.15.36, destination TCP port: 80

destination IP address: 192.168.15.46, destination TCP port: 80

destination IP address: 192.168.15.49, destination TCP port: 80

Correct Answer: C, D, E, F

Question 5 of 122

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

NAT64 packets traverse two IPv4 addressing domains.

NAT64 packets are translated two times.

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

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

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

Correct Answer: C, E