Chapter 7

Question 1

Refer to the exhibit. Traffic exiting R1 is failing translation. What part of the configuration is most likely incorrect?

Answer 1

access-list statement

Question 2

Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router?

Answer 2

defines which addresses can be translated

Question 3

How many bits of an IPv6 address are used to identify the interface ID?

Answer 3

64

Question 4

Refer to the exhibit. How many IPv6 broadcast domains exist in this topology?

Answer 4

0

Question 5

Refer to the exhibit. Which two addresses could be assigned to traffic leaving S0 as a result of the statement ip nat pool Tampa 179.9.8.96 179.9.8.111 netmask 255.255.255.240? (Choose two.)

Answer 5

179. 9.8.98

179. 9.8.101

Question 6

Refer to the exhibit. A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the graphic, what is the most likely problem?

Answer 6

The pool does not have a default router defined for the clients..

Question 7

Your organization is issued the IPv6 prefix of 2001:0000:130F::/48 by your service provider. With this prefix, how many bits are available for your organization to create subnetworks?

Answer 7

16

Question 8

After activating IPv6 routing on a Cisco router and programming IPv6 addresses on multiple interfaces, what is the remaining step to activate RIPng?

Answer 8

Enter the interface programming mode for each IPv6 interface and enable IPng RIP.

Question 9

Refer to the exhibit. IPv6 address 2006:1::1/64 eui-64 has been configured on the router FastEthernet0/0 interface. Which statement accurately describes the EUI-64 identifier configuration?

Answer 9

The configuration will derive the interface portion of the IPv6 address from the MAC address of the interface.

Question 10

What is true regarding the differences between NAT and PAT?

Answer 10

PAT uses unique source port numbers to distinguish between translations.

Question 11

Refer to the exhibit. The FTP server has an RFC 1918 private address. Users on the Internet need to connect to the FTP server on the Fa0/0 LAN of R1. Which three configurations must be completed on R1? (Choose three.)

Answer 11

open port 20
open port 21
NAT with port forwarding

Question 12

Refer to the exhibit. On the basis of the configuration shown, how should the pool of the excluded addresses be assigned to key hosts on the network, such as router interfaces, printers, and servers?

Answer 12

The addresses are statically assigned by the network administrator.

Question 13

Refer to the exhibit. A technician used SDM to enter the NAT configuration for a Cisco router. Which statement correctly describes the result of the configuration?

Answer 13

A user on the outside network sees a request addressed from 192.168.1.3 using port 80.

Question 14

Refer to the exhibit. According to the output, how many addresses have been successfully assigned or renewed by this DHCP server?

Answer 14

8

Question 15

What are two benefits of NAT? (Choose two.)

Answer 15

It saves public IP addresses.

It adds a degree of privacy and security to a network

Question 16

Refer to the exhibit. R1 is performing NAT for the 10.1.1.0/24 network, and R2 is performing NAT for the 192.168.1.2/24 network. What would be valid destination IP address for HostA to put in its IP header when communicating with the web server?

Answer 16

172.30.20.2

Question 17

Refer to the exhibit. Which two statements about the configuration are true? (Choose two.)

Answer 17

Traffic from the 10.1.1.0 network will be translated.

Permitted traffic gets translated to a single inside global IP address.

Question 18

What type of NAT should a network administrator use to ensure that a web server on the inside network is always available to the outside network?

Answer 18

static NAT

Question 19

Refer to the exhibit. Which address or addresses represent the inside global address?

Answer 19

209.165.20.25

Question 20

A technician has been told by a supervisor to always clear any dynamic translations before attempting to troubleshoot a failed NAT connection. Why has the supervisor issued these instructions?

Answer 20

Because entries can be cached for long periods of time, the supervisor wants to prevent decisions being made based on old data

Question 21

A network administrator wants to connect two IPv6 islands. The easiest way is through a public network that uses only IPv4 equipment. What simple solution solves the problem?

Answer 21

Use tunneling to encapsulate the IPv6 traffic in the IPv4 protocol.