Discussion
Home ‣ Networking ‣ Network Address Translation See What Others Are Saying!
- 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. The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?
Options- A. RAM should be erased and the router restarted.
- B. Flash should be erased and the router restarted.
- C. NVRAM should be erased and the router restarted.
- D. The new configuration should be entered and saved. Discuss
- 2. You want to create a standard access list that denies the subnet of the following host: 172.16.198.94/19. Which of the following would you start your list with?
Options- A. access-list 10 deny 172.16.192.0 0.0.31.255
- B. access-list 10 deny 172.16.0.0 0.0.255.255
- C. access-list 10 deny 172.16.172.0 0.0.31.255
- D. access-list 10 deny 172.16.188.0 0.0.15.255 Discuss
- 3. How does a host on an Ethernet LAN know when to transmit after a collision has occurred?
- In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
- In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
- You can improve the CSMA/CD network by adding more hubs.
- After a collision, the station that detected the collision has first priority to resend the lost data.
- After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.
Options- A. 1 and 3
- B. 2 and 4
- C. 1,3 and 4
- D. 2 and 5 Discuss
- 4. 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
- 5. Which of the following is true regarding VLANs?
Options- A. You must have at least two VLANs defined in every Cisco switched network.
- B. All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
- C. You should not have more than 10 switches in the same VTP domain.
- D. VTP is used to send VLAN information to switches in a configured VTP domain. Discuss
- 6. A switch has been configured for three different VLANs: VLAN2, VLAN3, and VLAN4. A router has been added to provide communication between the VLANs. What type of interface is necessary on the router if only one connection is to be made between the router and the switch?
Options- A. 10Mbps Ethernet
- B. 56Kbps Serial
- C. 100Mbps Ethernet
- D. 1Gbps Ethernet Discuss
- 7. You want to improve network performance by increasing the bandwidth available to hosts and limit the size of the broadcast domains. Which of the following options will achieve this goal?
Options- A. Managed hubs
- B. Bridges
- C. Switches
- D. Switches configured with VLANs Discuss
- 8. 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
- 9. 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 Discuss
- 10. Network 206.143.5.0 was assigned to the Acme Company to connect to its ISP. The administrator of Acme would like to configure one router with the commands to access the Internet. Which commands could be configured on the Gateway router to allow Internet access to the entire network?
- Gateway(config)# ip route 0.0.0.0 0.0.0.0 206.143.5.2
- Gateway(config)# router rip
- Gateway(config-router)# network 206.143.5.0
- Gateway(config-router)# network 206.143.5.0 default
Options- A. 1 only
- B. 3 only
- C. 1, 2 and 4
- D. 1 and 4 Discuss
More questions
Correct Answer: NVRAM should be erased and the router restarted.
Explanation:
Before you start to configure the router, you should erase the NVRAM with the
erase startup-config command and then reload the router using the
reload command.
Correct Answer: access-list 10 deny 172.16.192.0 0.0.31.255
Explanation:
First, you must know that a /19 is 255.255.224.0, which is a block size of 32 in the third octet. Counting by 32, this makes our subnet 192 in the third octet, and the wildcard for the third octet would be 31 since the wildcard is always one less than the block size.
Correct Answer: 2 and 5
Explanation:
Once transmitting stations on an Ethernet segment hear a collision, they send an extended jam signal to ensure that all stations recognize the collision. After the jamming is complete, each sender waits a predetermined amount of time, plus a random time. After both timers expire, they are free to transmit, but they must make sure the media is clear before transmitting and that they all have equal priority.
Correct Answer: Inside local
Explanation:
The host on the private network before translation is considered to be an inside local host.
Correct Answer: VTP is used to send VLAN information to switches in a configured VTP domain.
Explanation:
Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunk Protocol (VTP) is used to propagate VLAN information across a trunked link.
Correct Answer: 100Mbps Ethernet
Explanation:
Although you can use either 100Mbps or 1Gbps Ethernet, the 100Mbps is necessary at a minimum and is the best answer to this question. You need to trunk the link from the switch to the router to make this connection work with inter-VLAN communication.
Correct Answer: Switches configured with VLANs
Explanation:
By creating and implementing VLANs in your switched network, you can break up broadcast domains at layer 2. For hosts on different VLANs to communicate, you must have a router or layer 3 switch.
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: 2, 4 and 6
Explanation:
NAT 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.
Correct Answer: 1 and 4
Explanation:
There are actually three different ways to configure the same default route, but only two are shown in the answer. First, you can set a default route with the
0.0.0.0 0.0.0.0 mask and then specify the next hop, as in option A. Or you can use
0.0.0.0 0.0.0.0 and use the exit interface instead of the next hop. Finally, you can use option D with the
ip default-network command.
Comments
There are no comments.Programming
Copyright ©CuriousTab. All rights reserved.