Network Address Translation problems
- 1. 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
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.
- 2. 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
Correct Answer: clear ip nat translations *
Explanation:
The command
clear ip nat translations * will clear all the active NAT entries in your translation table.
- 3. 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
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.
- 4. 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
Correct Answer: 1, 3 and 5
Explanation:
You can configure NAT three ways on a Cisco router: static, dynamic, and NAT Overload (PAT).
- 5. When creating a pool of global addresses, which of the following can be used instead of the netmask command?
Options- A. / (slash notation)
- B. prefix-length
- C. no mask
- D. block-size Discuss
Correct Answer: prefix-length
Explanation:
Instead of the
netmask command, you can use the
prefix-length <length> statement.
- 6. Which of the following is considered to be the destination host after translation?
Options- A. Inside local
- B. Outside local
- C. Inside global
- D. Outside global Discuss
Correct Answer: Outside global
Explanation:
The host on the global network after translation is considered to be an outside global host.
- 7. Port Address Translation is also termed what?
Options- A. NAT Fast
- B. NAT Static
- C. NAT Overload
- D. Overloading Static Discuss
Correct Answer: NAT Overload
Explanation:
Another term for port address translation is NAT Overload because that is the command used to enable port address translation.
- 8. Which command would you place on interface connected to the Internet?
Options- A. ip nat inside
- B. ip nat outside
- C. ip outside global
- D. ip inside local Discuss
Correct Answer: ip nat outside
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.
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