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Home ‣ Networking ‣ EIGRP and OSPF See What Others Are Saying!
- Question
Which of the following are true regarding OSPF areas?
- You must have separate loopback interfaces configured in each area.
- The numbers you can assign an area go up to 65,535.
- The backbone area is also called area 0.
- If your design is hierarchical, then you don't need multiple areas.
- All areas must connect to area 0.
Options- A. 1 only
- B. 1 and 2 only
- C. 3 and 4 only
- D. 3, 4 and 5
- Correct Answer
- 3, 4 and 5
ExplanationLoopback interfaces are created on a router, and the highest IP address on a loopback (logical) interface becomes the RID of the router but has nothing to do with areas and is optional, so (1) is wrong. The numbers you can create an area with are from 0 to 4,294,967,295 option (2) is wrong. The backbone area is called area 0, so option (3) is correct. All areas must connect to area 0, so option (5) is correct. If you have only one area, it must be called area 0. This leaves option (4), which must be correct; it doesn't make much sense, but it is the best answer. - 1. 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
- 2. Which of the following are benefits of VLANs?
- They increase the size of collision domains.
- They allow logical grouping of users by function.
- They can enhance network security.
- They increase the size of broadcast domains while decreasing the number of collision domains.
- They simplify switch administration.
- They increase the number of broadcast domains while decreasing the size of the broadcast domains.
Options- A. 1 and 5
- B. 2 and 4
- C. 1, 3 and 5
- D. 2, 3 and 6 Discuss
- 3. You have a network that needs 29 subnets while maximizing the number of host addresses available on each subnet. How many bits must you borrow from the host field to provide the correct subnet mask?
Options- A. 2
- B. 3
- C. 4
- D. 5 Discuss
- 4. Which of the following are TCP/IP protocols used at the Application layer of the OSI model?
- IP
- TCP
- Telnet
- FTP
- TFTP
Options- A. 1 and 3
- B. 1, 3 and 5
- C. 3, 4 and 5
- D. All of the above Discuss
- 5. You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?
Options- A. The router is not configured for the new host.
- B. The VTP configuration on the switch is not updated for the new host.
- C. The host has an invalid MAC address.
- D. The switch port the host is connected to is not configured to the correct VLAN membership. Discuss
- 6. What does a VLAN do?
Options- A. Acts as the fastest port to all servers.
- B. Provides multiple collision domains on one switch port.
- C. Breaks up broadcast domains in a layer 2 switch internetwork.
- D. Provides multiple broadcast domains within a single collision domain. Discuss
- 7. Where are EIGRP successor routes stored?
Options- A. In the routing table only
- B. In the neighbor table only
- C. In the topology table only
- D. In the routing table and the topology table
- E. In the routing table and the neighbor table Discuss
- 8. What are reasons for creating OSPF in a hierarchical design?
- To decrease routing overhead
- To speed up convergence
- To confine network instability to single areas of the network
- To make configuring OSPF easier
Options- A. 1, 2 and 3
- B. 3 only
- C. 3 and 4
- D. 2, 3 nd 4 Discuss
- 9. Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?
Options- A. 192.168.168.129-190
- B. 192.168.168.129-191
- C. 192.168.168.128-190
- D. 192.168.168.128-192 Discuss
- 10. Which protocol is used to send a destination network unknown message back to originating hosts?
Options- A. TCP
- B. ARP
- C. ICMP
- D. BootP Discuss
More questions
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: 2, 3 and 6
Explanation:
VLANs break up broadcast domains in a switched layer 2 network, which means smaller broadcast domains. They allow configuration by logical function instead of physical location and can create some security if configured correctly.
Correct Answer: 5
Explanation:
A 240 mask is 4 subnet bits and provides 16 subnets, each with 14 hosts. We need more subnets, so let's add subnet bits. One more subnet bit would be a 248 mask. This provides 5 subnet bits (32 subnets) with 3 host bits (6 hosts per subnet). This is the best answer.
Correct Answer: 3, 4 and 5
Explanation:
Telnet, File Transfer Protocol (FTP), and Trivial FTP (TFTP) are all Application layer protocols. IP is a Network layer protocol. Transmission Control Protocol (TCP) is a Transport layer protocol.
Correct Answer: The switch port the host is connected to is not configured to the correct VLAN membership.
Explanation:
This question is a little vague, but the best answer is that the VLAN membership for the port is not configured.
Correct Answer: Breaks up broadcast domains in a layer 2 switch internetwork.
Explanation:
VLANs break up broadcast domains at layer 2.
Correct Answer: In the routing table and the topology table
Explanation:
Successor routes are going to be in the routing table since they are the best path to a remote network. However, the topology table has a link to each and every network, so the best answer is topology table and routing table. Any secondary route to a remote network is considered a feasible successor, and those routes are only found in the topology table and used as backup routes in case of primary route failure.
Correct Answer: 1, 2 and 3
Explanation:
OSPF is created in a hierarchical design, not a flat design like RIP. This decreases routing overhead, speeds up convergence, and confines network instability to a single area of the network.
Correct Answer: 192.168.168.129-190
Explanation:
256 - 192 = 64. 64 + 64 = 128. 128 + 64 = 192. The subnet is 128, the broadcast address is 191, and the valid host range is the numbers in between, or 129-190.
Correct Answer: ICMP
Explanation:
ICMP is the protocol at the Network layer that is used to send messages back to an originating router.
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