Final Review Questions

From Proprofs

You are here: Home > Schools > Comptia > Network+ Certification > Wiki Home >Study Guide

Let’s finish up our guide with a comprehensive review of some of the points we have covered. Instead of listing the points individually, however, we will instead review for the test by the most relevant way possible – through answering questions that cover tested material! The questions below have been especially selected because of either their frequency of occurrence on the actual examination or their merits as questions that require a good deal of thinking. The questions will also be drawn from all areas of the Network+ exam to give you a complete picture of the exam.

[edit section] The Questions

1. Which of the following topologies require the least amount of cabling?

A. Star

B. Mesh

C. Ring

D. Bus

Answer: You can easily eliminate Mesh, as this is the most media-intensive topology. In the Mesh topology, every node needs a connection to every other node! You can also eliminate the Star topology, which requires more cabling than Ring or Bus because every node requires a connection to a central hub or switch rather than a connection to the next node. Finally, you know that Bus requires less cabling than Ring because the ends of a Bus network only need be terminated. (D)

2. Which of the following is an objective of a fault-tolerant system?

A. Recovery of lost data

B. Efficiency in use of network resources

C. Multiple points of failure

D. Disk striping

Answer: Fault-tolerance refers to the ability of a system (a network, node, server, etc.) to remain available or operational even after a component of that system has failed. For example, a club’s telephone tree may have two different root branches so that if one person is not available, the other one should be. The only choice above that reflects this definition of fault tolerance is ( C ) “multiple points of failure,” because having multiple points of failure would imply that no one failure of any component would fail the system.

3. Complete: A repeater operates in Layer ___ of the OSI model.

A. 1

B. 2

C. 3

D. 4

Answer: Well, you should know that all a repeater does is amplify a data signal on the wire. It has no conception of network traffic or segments and is therefore only concerned with the physical electronic signals on the wire. Therefore, it operates in the Physical layer of the OSI model, which is layer 1. (A)

4. Workstation A cannot access the email server. Workstation B, however, can access the email server. Which of the following would be the most logical next step in troubleshooting workstation A’s issue?

A. Use Workstation B to attempt to connect to a different email server

B. Use a reflectometer to test the media that connects Workstation A to the network

C. Use Workstation A to attempt to connect to another network node

D. Use an outside host to attempt to connect to the email server

E. Use Workstation B to ping an outside host

Answer: In these types of questions, always remember that the only choices you are given are those following the question. Even if you feel there is a better answer than the choices out there (and there may very well be a better answer), choose the “BEST” of the given choices. You can easily eliminate choice A because Workstation B is essentially irrelevant to Workstation A’s issues. You can eliminate choice B because this would not be a logical next step – you would only use a reflectometer to test media, and you would have no idea (at this point) if the media was the issue. Choice D is totally irrelevant because it does not help in pinpointing the problem; in the given situation, you are not trying to connect from an outside host. The same holds true for choice E. Therefore, the only relevant and possible choice is choice C. By attempting to connect to another node, you could determine if A is totally disconnected from the network or if its problems in connecting are limited to its access to the email server. ( C )

5. Which of the following name resolution services would a Nix host typically use?

A. DHCP

B. Proxy

C. SAMBA

D. DNS

E. HOSTS

F. LMHOSTS

Answer: Right away you can eliminate choices A, B, and C because you know that none of these services provide name resolution. So the choice is between DNS, HOSTS, and LMHOSTS. The latter two are typically used in Microsoft Windows name resolution. The answer therefore is DNS, or domain name resolution service. This is used in both Nix and Windows environments and is also the correct answer. (D)

6. One user complains that he cannot access one application on a server but can access the other one. Four other users you ask say they can access both of the applications. What is the most logical next step?

A. Reboot the server

B. Reformat the workstation of the complaining user

C. Check the access permissions of the user

D. Reformat the server

E. Unpower the network hub

Answer: Again, remember that on questions like this, you have to choose the BEST ANSWER FROM THE ONES GIVEN. I cannot stress this enough. So, even if you feel that there are better choices than those out there, just assess each choice in comparison to the others. Obviously, choices B and D are rather drastic (in general, reformatting will never be a correct answer). Choice E will do absolutely nothing to correct the problem or even identify it. The choice is therefore between A and C. Rebooting the server could potentially solve the problem, but it is more likely that checking the access permissions of the user could identify why just that user is experiencing difficulties. The answer is therefore ( C ).

7. Where does a packet go if the destination is not on the local subnet?

A. DNS Server

B. Default Gateway

C. Repeater

D. Switch

E. Application-Level Firewall

Answer: Looking at the choices, you should be able to eliminate answers like A, C, D, and E. None of those choices are involved with the delivery or routing of packets. A Default gateway, as its name suggests, is the default place that a packet will go to when it doesn’t know where to go (when the destination is not the subnet). (B)

8. Which authentication/LAN access security system does Windows 2000 natively use?

A. Kerebos

B. IPSec

C. L2TP

D. PPTP

Answer: Some questions on the exam are simply knowledge based. You just have to know that Kerebos is used in Windows 2000; no amount of logical reasoning can get you to arrive at this answer. (A)

Good luck on the examination! I wish the best of luck to you.

Justin