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Table Of Contents  CertiGuide to Network+
 9  Appendix A: Answers to Success Questions and Real World Exam Questions

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Chapter 1001: Networking in the Real World Answers

1. When a managed threshold is exceeded, a management agent issues a:

A. Warning

B. Trap

C. Alert

D. Credit

E. Message

Explanation: When an agent is programmed with certain thresholds and a value falls outside of the acceptable threshold range, the agent issues a trap. This notifies the management console of the issue.

& Domain 2.7: Identify the purpose of the following network services (e.g. DHCP/bootp, DNS, NAT/ICS, WINS and SNMP)


 

2. What three configurations must be checked in order to avoid conflicts that could cause a modem to fail?

A. Electrical flow, analog signaling, and plug-and-play compatibility

B. Serial COM ports, I/O addresses, and IRQ settings

C. Serial COM ports, RAM, and Windows95 compatibility

D. IRQ settings, COM ports greater than 4, and sufficient disk space

Explanation: A modem will fail if it conflicts with the resources used by other devices installed in your computer. Common items to be checked include: COM ports, I/O addresses, and IRQ settings.

& Domain 4.2: Given a troubleshooting scenario involving a small Office/Home Office network failure (e.g., xDSL, cable, home satellite, wireless, POTS) identify the cause the problem.

& Domain 4.3: Given a troubleshooting scenario involving a remote connectivity problem (e.g., authentication failure, Protocol configuration, physical connectivity) identify the cause a problem.

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.

& Domain 4.12: Given a network-troubleshooting scenario involving a wiring/infrastructure problem, identify the cause of the problem) e.g., bad media, interference, network hardware).


 

3. A customer calls saying that the new modem they just installed is not connecting to their Internet Service Provider. They hear the dial-tone and the other modem answering, but the connection is dropped within a few seconds. What might be a logical reason for this?

A. The modems are incompatible

B. The modem is configured on the wrong COM port

C. The customer has call waiting and another call is disrupting the connection

D. The customer checked the "only connect at this speed" option and the ISP's modems are not as fast as the customer's.

Explanation: If the "only connect at this speed" box is checked the modem will dial and try to connect at the maximum speed. If the maximum speed is not met, the modem may disconnect and retry the connection until the maximum speed is negotiated. If the ISP's modem is not the same speed as the new modem the problem would remain until the box is unchecked.

& Domain 4.2: Given a troubleshooting scenario involving a small Office/Home Office network failure (e.g., xDSL, cable, home satellite, wireless, POTS) identify the cause the problem.

& Domain 4.3: Given a troubleshooting scenario involving a remote connectivity problem (e.g., authentication failure, Protocol configuration, physical connectivity) identify the cause a problem.

& Domain: 4.9 Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.

& Domain 4.11: Given a network to allow sharing scenario involving a client connectivity problem (e.g., incorrect Protocol/client software/authentication configuration, or insufficient rights/permission), identify the cause the problem.

& Domain 4.12: Given a network-troubleshooting scenario involving a wiring/infrastructure problem, identify the cause of the problem) e.g., bad media, interference, network hardware).


 

4. If a workstation is located in an area where many small electrical devices are used, how should power to the computer equipment be obtained?

A. Daisy-chain a power-strip on an existing strip to assure you have enough outlets

B. Make sure the office has a 220v power source available

C. Place the computer on a separate outlet, and use a UPS if electrical drops or surges are identified.

D. Make sure all extension cords are UL approved.

E. Place the PC on a UL approved power strip with no more than 3 other devices on the same strip

Explanation: When drops and/or surges are possible, it is always best to use a UPS for the computer equipment.

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

5. Complete virus protection consists of:

A. Anti-virus software on the workstations to prevent entry to the network

B. Anti-virus software on user's floppy diskettes

C. A bootable diskette that is write-protected that contains anti-virus software

D. Anti-virus software on the server and on the workstations

Explanation: There are a number of protection schemes that can be deployed, but complete protection can only be assured when the anti-virus software is loaded on the workstation and the server. The Signature files must also be kept current

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

6. When you suspect a virus has infected a workstation on your network, the best way to initiate a virus scan is to:

A. Run the virus software from the network if the network is continually monitored for viruses

B. Run the virus software from another workstation

C. Run the virus software from a known virus free workstation

D. Boot the workstation with a write-protected diskette that contains the anti-virus software.

Explanation: Unless the PC is "booted clean" you cannot be certain that the antivirus software will detect the virus. Some viruses can "hide" themselves in memory so you must boot to a known-virus-free diskette and run the antivirus software from there.

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

7. Once the problem has been identified, the next logical step is to:

A. Check the WEB for newer drivers when a hardware component is at fault

B. Develop a plan to correct the problem

C. Replace the problem component

D. Do a clean reboot of the PC

E. Make sure all users are logged off the network.

Explanation: The documentation package should always contain a plan of action once the problem(s) is identified. This helps assure that the documentation is complete, and that your thought process has been checked.

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

8. A preliminary step in the troubleshooting process is:

A. Replacing questionable hardware

B. Verifying that the failed process had worked properly at one time

C. Verifying link lights on all hubs and routers

D. Resetting all hubs and routers

E. Verify that the servers are running

Explanation: Depending on the problem, the solution may or may not include the server or network component, but it is always important to know if the failed process has worked previously.

& 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

9. Which utility would you use to check your IP configuration on a Windows 95/98 system?

A. WINIPCFG

B. TRACERT

C. NETSTAT

D. IPCONFIG

E. PING

Explanation: WINIPCFG is the utility you would use in Windows 95/98 to discover your IP address, subnet mask, and gateway. IPCONFIG is the command used in Windows NT to provide the same information. Pinging your loopback address (127.0.0.1) would tell you if TCP/IP was installed correctly.

& Domain 4.1: Given a troubleshooting scenario, select the appropriate TCP/IP utility from among the following: Tracert, ping, ARP, NBTstat, Netstat. IPconfig/Ifconfig, WinIPcfg, Nslookup.


 

10. You are the LAN administrator for 32 workstations. You notice that during the day, when the lights are off, the network functions perfectly. At night, when fluorescent lights are turned on, a few workstations on a particular subnet do not function properly. What is the most likely cause?

A. Cabling was improperly laid over a fluorescent light

B. Recommended cabling length has been exceeded

C. Server is unavailable because backups are performed at night

D. A defective NIC is beaconing

E. All choices given are valid concerns

& Explanation: EMI (Electromagnetic Interference) is the most common cause of signal attenuation. The electrical ballast in the light fixture emits enough static to greatly reduce signal strength. The proper way to resolve this is to either put the cable through a conduit or simply go around the fixture entirely. Cat 5 cabling is cheap enough that the latter would not present a concern.

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.

& Domain 4.10: In a troubleshooting scenario involving a network with a particular physical topology (i.e., bus, Star/hierarchal, mesh, ring, and wireless) and including network diagram, identify the network area affected and the cause the problem.

& Domain 4.12: Given a network-troubleshooting scenario involving a wiring/infrastructure problem, identify the cause of the problem) e.g., bad media, interference, network hardware).


 

11. Your modem is located on COM2 and will not function. What is the most likely cause of the problem?

A. Conflict with IRQ3

B. Conflict with IRQ4

C. Conflict with port 80

D. Incorrect ISP address

E. Incorrect ISP phone number

Explanation: COMs 2 and 4 are assigned to IRQ 3, and COMs 1 and 3 are assigned to IRQ 4.

& Domain 4.2: Given a troubleshooting scenario involving a small Office/Home Office network failure (e.g., xDSL, cable, home satellite, wireless, POTS) identify the cause the problem.


 

12. While troubleshooting a PC that won't connect to the network, you find that using a different port on the wiring closet hub fixes the problem. What should be done immediately?

A. Replace the NIC

B. Replace the existing NIC drivers

C. Attempt to connect to the network and transfer a file

D. Document the problem and situation

E. Replace the hub

Explanation: The most logical step may seem to be to replace the hub. However, it is best to first document the problem, since this would be to let all pertinent persons know what is going on.

& 4.9 Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

13. When eliminating common variables to determine a hardware vs. software problem, you should:

A. Inspect all connections

B. Identify any recent changes to the computer

C. Scan the disk for viruses and file errors

D. Reload the operating system

E. Log on as a different user

Explanation: Reloading the operating system is a drastic measure and should only be used when all other problem solving tasks are exhausted. Logging on as a different user might help eliminate user problems, but won't help with many other kinds of trouble.

& Domain 4.9: Given a network problem scenario, select an appropriate course of action based on general troubleshooting strategy.


 

14. Prior to any network implementation, which of the following must be accomplished? (Choose two)

A. Disable network logons

B. Implement network load balancing

C. Compile documentation

D. Determine needs and expectations

E. Disconnect all power supplies from network cabling


Previous Topic/Section
Chapter 1000: Security in the Real World Answers
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Chapter 1010: Real World Exam Answers
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