Hardware and Network Troubleshooting (5) Flashcards
You have a Windows 8.1 desktop computer that does not produce an image on the screen when it boots. You hear a POST beep and normal indicator lights are on. The monitor is connected to the computer and the power light is on. What should be your next troubleshooting step?
Try the monitor on another computer or another monitor on this computer
Replace the video card
Replace the monitor
Try the monitor on another computer or another monitor on this computer
Try another monitor or try this monitor on another computer. That will narrow it down pretty quickly. Remember, if it’s not the monitor, it’s probably the video card
A user shows you her mobile phone, and the screen is constantly flickering. She turns the device off and on again, and it still happens. Which component is likely causing the problem?
Display
Backlight
Converter
Backlight
Dim or flickering displays on mobile devices are usually caused by a faulty backlight in the display panel. A failing inverter can cause these problems too
A user reports that the video on her desktop computer does not display properly. There are several places where the screen will not light up: those spots are always black dots. What is this a symptom of?
Artifacts
Dead pixels
Overheating
Dead pixels
Dead pixels are spots on the screen that never “fire,” or light up. You can check for these by setting the background to white and seeing whether any spots don’t light up
You are troubleshooting a laptop computer that has a drifting mouse cursor. If nobody is moving the external mouse, the cursor will slowly drift up and to the right. You have tried a different external mouse and the problem still happens. What should you do to resolve this problem?
Replace the laptop keyboard
Recenter the laptop’s point stick
Recenter the laptop’s touch pad
Recenter the laptop’s point stick
Pointer drift is the mouse cursor slowly drifting in one direction even though you are not trying to make it move. This issue is generally related to the point stick not centering properly after it’s been used. If you have pointer drift, try using the point stick and moving it back and forth a few times to get it to recenter itself. You can also try rebooting. If the problem persists, either disable or replace the point stick
You are troubleshooting network connectivity issues in one section of the building. After a few hours, you come to the conclusion that the network cables in the wiring closet must be mislabelled. Which tool is most appropriate to test your theory?
Cable tester
Punchdown tool
Tone generator and probe
Tone generator and probe
If you need to trace a wire in a wall from one location to another, a tone generator and probe (or toner probe) is the tool for you. It consists of two pieces: a tone generator and a probe. Because it’s so good at tracking, you will sometimes hear this referred to as a “fox and hound.”
You are upgrading a laptop with new memory. Which of the following disassembly processes should you follow? (Choose two)
Remove the keyboard to access the memory sockets
Use appropriate hand tools
Leave the clamshell open
Document and label cable and screw locations
Use appropriate hand tools
Document and label cable and screw locations
When upgrading or repairing laptops, you should always document and label screw and cable locations, organize parts, refer to manufacturer instructions, and use appropriate hand tools. In some cases, but not all, you might need to remove the keyboard to upgrade the memory. Refer to the manufacturer’s instructions
A remote workstation can’t connect to the network. You want to narrow down the problem to the UTP cable or the network card. Which tool can help you determine whether the cable is causing the problem?
Multimeter
Cable tester
Crimper
Cable tester
Cable testers are indispensable tools for any network technician. Usually you would use a cable tester before you install a cable to make sure it works. Of course, you can test them after they’ve been run as well
You have just installed a new HP LaserJet printer on your network. You’ve plugged it directly into a CAT6a network cable. You try to install the printer on a client using the printer’s IP address, but you are unable to connect. The printer is in Ready state. What should you do next?
Double-check the printer’s IP configuration information
Stop and restart the spooler service
Take the printer offline and bring it back online
Double-check the printer’s IP configuration information
For network-enabled laser printers, no connectivity can be a sign of improperly configured IP settings such as the IP address. While each printer is somewhat different, you can manually configure most laser printers’ IP settings through the LCD control panel
Your network has recently grown from 50 client computers to about 90. All workstations on the network are connected using CAT5e or better cabling, and all network devices support at least 100 Mbps data transfers. Users have been reporting very slow network speeds since the expansion, and complaints are now coming more frequently. Which of the following actions is most likely to help resolve the issue?
Add another hub to the network
Upgrade all the cabling to at least CAT6a
Add another switch to the network
Add another switch to the network
On a wired network, if you run into slow speeds or intermittent connectivity, it’s likely a load issue. There’s too much traffic for the network to handle, and the network is bogging down. Solutions include adding a switch, replacing your hubs with switches, and even creating virtual LANs (VLANs) with switches. If you want to upgrade the cabling or connectivity infrastructure to combat a speed issue, you should do all of it and not just cables or a router
An iPhone 6 user just downloaded a new app that requires the use of GPS. It doesn’t function properly. Another app she has on her phone also needs GPS and it also does not work. How does she figure the phone to let the new app work properly?
Enable GPS under Settings > Privacy
Enable Location Services under Settings > Privacy
Enable Location Services under Settings > GPS
Enable Location Services under Settings > Privacy
The iPhone and iPad use the term Location Services to refer to GPS. Android devices will call it Location, Location Services, or Location Reporting. On an iPhone, you enable Location Services under Settings ➢ Privacy. In Android, location access settings are configured under Settings ➢ Location
A technician just replaced the toner cartridge in a laser printer. Now the printer only prints blank pages. What should you do to resolve the problem?
Reinstall the printer driver
Replace the toner cartridge with a new toner cartridge
Remove the toner cartridge, remove the sealing tape, and then reinstall the cartridge
Remove the toner cartridge, remove the sealing tape, and then reinstall the cartridge
One problem occurs with toner cartridges when someone installs a new toner cartridge and forgets to remove the sealing tape that is present to keep the toner in the cartridge during shipping. The solution to this problem is fortunately quite easy: Remove the toner cartridge from the printer, remove the sealing tape, and reinstall the cartridge
You are troubleshooting a desktop computer that is prone to unexpected shutdowns. The user reports that no error messages appear before the computer shuts down. Which two things are most likely to cause this? (Choose two)
Failing hard drive
Bad RAM
BIOS misconfiguration
Improperly seated chips
Bad RAM
Improperly seated chips
Unexpected shutdowns are difficult to troubleshoot, as are all intermittent issues. The first thing to check is to ensure that all socketed chips are seated properly; in fact, reseating them is a good option. If that does not resolve the issue, test the RAM or replace it if possible
You are troubleshooting a workstation that can’t connect to the network. Which tool should you use to test the functionality of the send and receive circuitry on the network card?
Punchdown tool
Loopback plug
Ping
Loopback plug
A loopback plug is for testing the ability of a network adapter to send and receive. The plug gets plugged into the NIC, and then a loopback test is performed using troubleshooting software. You can then tell whether the card is working properly
You want to transfer files from your computer to a remote server. To do this, you want to connect to a shared directory on the server and copy the files. Which command-line utility will allow you to do this?
netstat
net
netshare
net
Depending on the version of Windows you are using, net can be one of the most powerful commands at your disposal. While all Windows versions include a net command, its capabilities differ based on whether it is used on a server or workstation and the version of the operating system. Commonly, net share is used to create shared folders, and net use is used to connect to shared folders over the network
A user’s Windows-based desktop computer always attempts to boot to the DVD-ROM drive. Where can she go to change the settings to boot to the hard drive?
Windows Control Panel
Windows Device Manager
BIOS
BIOS
The system BIOS contains the boot sequence for a system. Most systems probably boot to the first hard drive, but they can also be configured to boot from a secondary hard drive, the optical drive, or the network. If a computer can’t find the right boot device, it could be that it’s attempting to boot from the wrong device. This setting is configured in the BIOS
