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- Question
Which of the following are advantages 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 4
- B. 3, 5 and 6
- C. 5 and 6
- D. 2, 4 and 6
- Correct Answer
- 2, 4 and 6
ExplanationNAT is not perfect, but there are some advantages. It conserves global addresses, which allow us to add millions of hosts to the Internet without "real" IP addresses. This provides flexibility in our corporate networks. NAT can also allow you to use the same subnet more than once in the same network without overlapping networks. - 1. Which switching technology reduces the size of a broadcast domain?
Options- A. ISL
- B. 802.1Q
- C. VLANs
- D. STP Discuss
- 2. Which of the following protocols are used to configure trunking on a switch?
- VLAN Trunk Protocol
- VLAN
- 802.1Q
- ISL
Options- A. 1 only
- B. 3 only
- C. 3 and 4
- D. 1, 3 and 4 Discuss
- 3. Which protocol reduces administrative overhead in a switched network by allowing the configuration of a new VLAN to be distributed to all the switches in a domain?
Options- A. STP
- B. VTP
- C. DHCP
- D. ISL Discuss
- 4. Which of the following modes are valid when a switch port is used as a VLAN trunk?
- Blocking
- Dynamic auto
- Dynamic desirable
- Nonegotiate
- Access
- Learning
Options- A. 1, 2 and 6
- B. 2, 3 and 4
- C. 4, 5 and 6
- D. 2, 4, and 5 Discuss
- 5. When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?
Options- A. By default, all VLANs are allowed on the trunk.
- B. No VLAN's are allowed, you must configure each VLAN by hand.
- C. Only configured VLAN's are allowed on the link.
- D. Only extended VLAN's are allowed by default. Discuss
- 6. Which of the following is considered to be the destination host before translation?
Options- A. Inside local
- B. Outside local
- C. Inside global
- D. Outside global Discuss
- 7. Which command will allow you to see real-time translations on your router?
Options- A. show ip nat translations
- B. show ip nat statistics
- C. debug ip nat
- D. clear ip nat translations * Discuss
- 8. 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
- 9. 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
- 10. 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
Network Address Translation problems
Search Results
Correct Answer: VLANs
Explanation:
Virtual LANs break up broadcast domains in layer 2 switched internetworks.
Correct Answer: 3 and 4
Explanation:
Cisco has a proprietary trunking protocol called ISL. The IEEE version is 802.1Q.
Correct Answer: VTP
Explanation:
Virtual Trunk Protocol (VTP) is used to pass a VLAN database to any or all switches in the switched network. The three VTP modes are server, client, and transparent.
Correct Answer: 2, 3 and 4
Explanation:
The valid modes of a VLAN trunk on a switch are dynamic auto, dynamic desirable, trunk (on), and nonegotiate.
Correct Answer: By default, all VLANs are allowed on the trunk.
Explanation:
By default, all VLANs are allowed on the trunk link and you must remove by hand each VLAN that you don't want traversing the trunked link.
Correct Answer: Outside local
Explanation:
The host on the global network before translation is considered to be an outside local host.
Correct Answer: debug ip nat
Explanation:
The command
debug ip nat will show you in real time the translations occurring on your router.
Correct Answer: Inside local
Explanation:
The host on the private network before translation is considered to be an inside local 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 global
Explanation:
The host on the private network after translation is considered to be an inside global host.
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