Module 6 Review Questions

Module 6 Review Questions

Assessment

Flashcard

Computers

12th Grade

Practice Problem

Hard

Created by

Wayground Content

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23 questions

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1.

FLASHCARD QUESTION

Front

Refer to the exhibit. What has to be done in order to complete the static NAT configuration on R1? Options: R1 should be configured with the command ip nat inside source static 209.165.200.1 192.168.11.11, R1 should be configured with the command ip nat inside source static 209.165.200.200 192.168.11.11, Interface S0/0/0 should be configured with the command ip nat outside, Interface Fa0/0 should be configured with the command no ip nat inside.

Media Image

Back

Interface S0/0/0 should be configured with the command ip nat outside.

Answer explanation

In order for NAT translations to work properly, both an inside and outside interface must be configured for NAT translation on the router.

2.

FLASHCARD QUESTION

Front

Refer to the exhibit. A network administrator has configured R2 for PAT. Why is the configuration incorrect?

Media Image

Back

NAT-POOL2 is bound to the wrong ACL.

Answer explanation

In the exhibit, NAT-POOL 2 is bound to ACL 100, but it should be bound to the configured ACL 1. This will cause PAT to fail. 100, but it should be bound to the configured ACL 1. This will cause PAT to fail.

3.

FLASHCARD QUESTION

Front

From the perspective of R1, the NAT router, which address is the inside global address?

Media Image

Back

209.165.200.225

Answer explanation

There are four types of addresses in NAT terminology. Inside local address Inside global address Outside local address Outside global address The inside global address of PC1 is the address that the ISP sees as the source address of packets, which in this example is the IP address on the serial interface of R1, 209.165.200.224.

4.

FLASHCARD QUESTION

Front

Refer to the exhibit. Given the commands as shown, how many hosts on the internal LAN off R1 can have simultaneous NAT translations on R1?

Media Image

Back

1

Answer explanation

The NAT configuration on R1 is static NAT which translates a single inside IP address, 192.168.0.10 into a single public IP address, 209.165.200.255. If more hosts need translation, then a NAT pool of inside global address or overloading should be configured.

5.

FLASHCARD QUESTION

Front

What is a disadvantage when both sides of a communication use PAT?

Back

End-to-end IPv4 traceability is lost.

Answer explanation

With the use of NAT, especially PAT, end-to-end traceability is lost. This is because the host IP address in the packets during a communication is translated when it leaves and enters the network. With the use of NAT/PAT, both the flexibility of connections to the Internet and security are actually enhanced. Host IPv4 addressing is provided by DHCP and not related to NAT/PAT.

6.

FLASHCARD QUESTION

Front

What IPv4 address is the source IP address in the packet between RT2 and the web server? Options: 192.0.2.2, 203.0.113.10, 172.16.1.254, 192.168.1.5, 209.165.200.245

Media Image

Back

209.165.200.245

Answer explanation

Because the packet is between RT2 and the web server, the source IP address is the inside global address of PC, 209.165.200.245.

7.

FLASHCARD QUESTION

Front

Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?

Media Image

Back

PAT using an external interface

Answer explanation

The output shows that there are two inside global addresses that are the same but that have different port numbers. The only time port numbers are displayed is when PAT is being used. The same output would be indicative of PAT that uses an address pool. PAT with an address pool is appropriate when more than 4,000 simultaneous translations are needed by the company.

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