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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 1100:  Troubleshooting

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XXIII  Chapter 1100: Test for Success Questions
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XXIV  Chapter 1100: Test for Success Answers

1. Your company has recently added a new workstation to the network. The network is using both TCP/IP and IPX/SPX protocols. The servers on the network are running IPX/SPX only. The new workstation can connect to the other workstations using TCP/IP, but it cannot connect to the servers. What should you check first?

A. IP Address

B. DHCP settings

C. Subnet Mask

D. Frame Type

Explanation: In IPX/SPX, frame type settings can be easily mismatched. This causes two computers using the protocol to not be able to communicate.


2. The computer you just built gives you a series of beep when it is powered on. What should you do first?

A. There is nothing wrong. Boot again

B. Count the beeps. Look up the beep code in the motherboard manual or look it up on the BIOS manufacturers website.

C. Replace the motherboard

D. Replace the RAM

E. Replace the video card.

Explanation: Beep code can vary depending on the BIOS being used. Always consult your documentation before replacing any parts.


3. A user complains that she cannot see anything on her monitor. The monitor is powered on and has a green light showing. The computer successfully POST’s and appears to be loading the OS. What should you check first?

A. Reseat the video card

B. Replace the VGA cable.

C. Check the brightness setting

D. Replace the monitor

Explanation: It is not too uncommon for janitorial service to wipe down a monitor and roll the brightness knob down to zero. Always check the obvious first.


4. A workstation on your network is not connecting to any other computers. You verified that the domain and IP settings are correct. You can successfully PING and the computer’s IP address. The back of the NIC has no light illuminated. The port on the hub that the workstation is plugged into has no light illuminated either. What should you check first?

A. Replace the NIC

B. Reinstall TCP/IP

C. Check the DHCP settings

D. Replace the drop cable with a known working cable.

Explanation: Remember that 90% of networking issues are cable related. In this scenario, TCP/IP is successfully loaded and bound to the NIC, given that you can PING the MS Loopback Adapter ( and the IP address of the NIC. The lights on the NIC and the hub not illuminating are a telltale sign of a bad connection.


5. You are trying to read a floppy disk in you OS, but the OS is showing the contents of the last floppy disk that was in the machine. What should you do first?

A. Replace the floppy cable

B. Flip-flop the ribbon cable

C. Replace the FDD

D. Get a new floppy disk

Explanation: This is a sign that pin-34 on the cable, controller or FDD is bad. Replace the cheapest thing first.


6. A printer you are servicing is reporting that it is out of paper even though plenty is loaded. What should you check first?

A. Replace the printer cable

B. Reinstall the printer driver

C. Try different paper.

D. Clean the inside of the printer with canned air

Explanation: Many printers have sensors that tell the printer when it is out of paper. If they become dirty, they can provide false errors.


7. A computer you are servicing will not allow you to set a display mode higher than 640 x 480 with 16 colors. What should you do first?

A. Replace the video card

B. Reload the video drivers

C. Replace the VGA cable

D. Replace the RAM

Explanation: 640 x 480 x 16 is the default VGA setting for most video cards. Many times, reinstalling the drivers for the video card will resolve this issue.


8. You are trying to connect to a shared folder on your network. The computer gives you an error of “Access Denied.” What should you check first?

A. Reinstall TCP/IP

B. Reset your login password

C. Check the permissions of the folder

D. Replace the drop cable

Explanation: The error message says it all. You have network connectivity, you can see the network, and you are communicating with the network. Without sufficient permissions, you will not be able to access the share.


9. A computer that you are working has an external serial modem that connects to the Internet just fine in HyperTerminal. However, when you move the mouse to launch your browser, the computer locks up. What is the issue?

A. Replace the mouse

B. Replace the serial cable to the modem

C. Don’t use the mouse

D. Check the IRQ settings for the modem and mouse

Explanation: Older serial mice used a COM port, and hence an IRQ. The modem is using a COM port as well. If they are using the same IRQ, they cannot be used at the same time. Option C may work but is not very practical.


10. You are troubleshooting a PC. You reboot and are immediately asked to enter a password to continue with POST. What should you do?

A. Replace the motherboard

B. Set the Clear CMOS jumper

C. Replace the BIOS chip

D. The system is trashed. Get a new one

Explanation: Someone has set a password in the CMOS setup. You must set the Clear CMOS jumper or remove the CMOS battery.

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XXIII  Chapter 1100: Test for Success Questions
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Appendix A:  Decoding Math
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