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- Question
Which command will create a dynamic pool named Todd that will provide you with 30 global addresses?
Options- A. ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.240
- B. ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.224
- C. ip nat pool todd 171.16.10.65 171.16.10.94 net 255.255.255.224
- D. ip nat pool Todd 171.16.10.1 171.16.10.254 net 255.255.255.0
- Correct Answer
- ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.224
ExplanationThe command ip nat pool <name> creates the pool that hosts can use to get onto the global Internet. What makes option B correct is that the range 171.16.10.65 through 171.16.10.94 includes 30 hosts, but the mask has to match 30 hosts as well, and that mask is 255.255.255.224. Option C is wrong because the pool name has a lower case "T" in the pool name. Pool name's are case sensitive. - 1. Which of the following are disadvantages of using NAT?
- Translation introduces switching path delays.
- Conserves legally registered addresses.
- Causes loss of end-to-end IP traceability.
- Increases flexibility when connecting to the Internet.
- Certain applications will not function with NAT enabled.
- Reduces address overlap occurrence.
Options- A. 1, 3 and 5
- B. 3 and 4
- C. 2, 4 and 5
- D. 1 and 3 Discuss
- 2. Which command will show you all the translations active on your router?
Options- A. show ip nat translations
- B. show ip nat statistics
- C. debug ip nat
- D. clear ip nat translations * Discuss
- 3. Which of the following is considered to be the address after translation?
Options- A. Inside local
- B. Outside local
- C. Inside global
- D. Outside global Discuss
- 4. Which of the following would be good reasons to run NAT?
- You need to connect to the Internet and your hosts don't have globally unique IP addresses.
- You change to a new ISP that requires you to renumber your network.
- You don't want any hosts connecting to the Internet.
- You require two intranets with duplicate addresses to merge.
Options- A. 1, 2 and 4
- B. 2 and 4
- C. 3 only
- D. All of the above Discuss
- 5. Which of the following is considered to be the address before translation?
Options- A. Inside local
- B. Outside local
- C. Inside global
- D. Outside global Discuss
- 6. Which command will show you the summary of the NAT configuration?
Options- A. show ip nat translations
- B. show ip nat statistics
- C. debug ip nat
- D. clear ip nat translations * Discuss
- 7. Which of the following would be a good starting point for troubleshooting if your router is not translating?
Options- A. Reboot.
- B. Call Cisco.
- C. Check your interfaces for the correct configuration.
- D. Run the debug all command. Discuss
- 8. Which command will clear all the translations active on your router?
Options- A. show ip nat translations
- B. show ip nat statistics
- C. debug ip nat
- D. clear ip nat translations * Discuss
- 9. Which command would you place on interface on a private network?
Options- A. ip nat inside
- B. ip nat outside
- C. ip outside global
- D. ip inside local Discuss
- 10. Which are considered the methods of NAT?
- Static
- IP NAT pool
- Dynamic
- NAT double-translation
- Overload
Options- A. 1 and 6
- B. 3 only
- C. 1, 3 and 5
- D. All of the above Discuss
Network Address Translation problems
Search Results
Correct Answer: 1, 3 and 5
Explanation:
NAT is not perfect and can cause some issues in some networks, but most networks work just fine. NAT can cause delays and troubleshooting problems, and some applications just won't work.
Correct Answer: show ip nat translations
Explanation:
The command
show ip nat translations will show you the translation table containing all the active NAT entries.
Correct Answer: Inside global
Explanation:
The host on the private network after translation is considered to be an inside global host.
Correct Answer: 1, 2 and 4
Explanation:
The most popular use of NAT is if you want to connect to the Internet and you don't want hosts to have global (real) IP addresses, but option B and D are correct as well.
Correct Answer: Inside local
Explanation:
The host on the private network before translation is considered to be an inside local host.
Correct Answer: show ip nat statistics
Explanation:
The
show ip nat statistics command displays a summary of the NAT configuration as well as counts of active translation types, hits to an existing mapping, misses (causing an attempt to create a mapping), and expired translations.
Correct Answer: Check your interfaces for the correct configuration.
Explanation:
In order for NAT to provide translation services, you must have
ip nat inside and
ip nat outside configured on your router's interfaces.
Correct Answer: clear ip nat translations *
Explanation:
The command
clear ip nat translations * will clear all the active NAT entries in your translation table.
Correct Answer: ip nat inside
Explanation:
As in access-lists, you must configure your interfaces before NAT will provide any translations. On the inside networks you would use the command
ip nat inside. On the outside interface, you will use the command
ip nat outside.
Correct Answer: 1, 3 and 5
Explanation:
You can configure NAT three ways on a Cisco router: static, dynamic, and NAT Overload (PAT).
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