5.0 Hardware and Network torubleshooting Flashcards
You press the power button on a PC. The fans make some noise but the PC does not boot. Which component should you check first ?
Power Supply
Which windows command querys the DHCP server requesting fresh DHCP info ?
ipconfig /renew
A network printer is not printer, what’s the first thing you should do ?
Clear the print queue
A laser printer keeps printing vertical black lines. What is the likely cause of this problem ?
Scratch/dent on the EP drum
What provides power to the corona wire inside a laser printer ?
High Voltage Power Supply (HVPS)
What computer components is the most likely to overheat ?
CPU
What commands allow you to show a route a packet takes to get to a destination ?
Tracert (windows) and traceroute (MacOSX & Linux)
PC does not boot. You here a ticking noise from inside the case. What’s the most likely problem ?
Failed hard drive
What does the netstat command do ?
shows active connections, routing tables and traffic stats of the network.
You’re getting garbled print jobs, what’s the first thing you should do ?
Reinstall the print driver
Which command could be used to check a hard disk for bad sectors or errors ?
CHKDSK
What is Low resolution mode and what causes it ?
- Low resolution display
- Video driver is improperly installed/needs updating.
You’ve checked the external physical layer protocol on a non functioning screen. Whats the next thing you should check ?
Replace the screen with a known working screen. This will determine whether its the screen or another hardware issues such as a GPU.
Your screen displays incorrect colour patterns once booted into the OS. Whats the likley cause of this problem ?
Wrong setting on video card.
Boot into safe mode
check settings on the card and update if necessary
Your screen displays incorrect colour patterns the moment you turn your PC on . Whats the likley cause of this problem ?
Hardware the likely culprit: Monitor, cable, GPU.
You fire up the projector in your office only to notice the projected image is distorted. What’s the likley cause of this ?
Defect in the lens
Where can you find clues for most display issues ?
System or application log
What is an inverter ?
An inverter takes the DC power from within a laptop and converts it to AC in order to run the backlight of the LCD.
You’ve restarted you’re Samsung phone but the touch screen still isnt working. What could try to do before sending it back to Samsung ?
Android has a device diagnostics tool.
Consult samsungs guide/site to access.
What is Slow performance along with high disk activity a sign of ?
Virus
You notice your laptop has been given an APIPA. What steps could you take to connect back to the network ?
In the command prompt use the ipconfig/release then renew command.
What causes streaks from a laser printer ?
Fuser isn’t heating toner on to paper
The fuser on a laser printer isn’t heating toner to the paper and is casuings streaks. What is the solution ?
Replace the fuser ?
What are some of the causes of vertical black lines from a laser printer ?
Scratch on EP drum. Replace.
Dirty Corona wire. Clean it.
Whats the primary cause of white lines on a (laser) print out ?
Debris on the corona wire stop the transfer of toner to the paper.
Solution: Use the brush provided to clean the wire.
What should you do if multiple print jobs cause the printer to freeze ?
Delete jobs
clear queue
Hard reset
What’s the first thing you should try if a printer refuses to print any jobs ?
Windows test page.
What is the result of a broken laser shutter ?
Image cannot be created on the drum
If no voltage is being applied to the transfer roller, What is the end result ?
No toner transfer
When there’s not an obvious error (For all trouble shooting) what’s the first thing you should check ?
External physical layer
What is the print spooler service ?
The print spooler service is in charge of sending print jobs to that printer.
If you can’t ping a resource by name, Whats the likely cause of this issue ?
DNS down
Incorrect IP from the DNS server
What doe this command do
ipconfig /flushdns
Clears cache of named IP entries and reloads them from the DNS server.
You have a incorrect subnet on a device. What should you do to resolve this issues ?
Match the subnet mask to that of the router
A laptop shutting down whenever it is moved. What is the likely cause of this issues ?
Loose battery connection
What is a perimeter network also known as ?
DMZ
A technician is building a new computer. The technician installs the motherboard, processor, memory, hard drives, and case fans, then they attempt to connect the cables to the appropriate connections. When the technician powers on the system, the fans spin, and the motherboard’s LEDs light up. Unfortunately, the computer does not successfully complete the POST and the monitor remains blank. What did the technician likely forget to connect to the motherboard?
CPU power cable
An employee is complaining that their workstation is not booting into Windows when they reboot their machine. You noticed that during the reboot, the system is loading into a PXE-based OS. What should you do next?
BIOS’s boot order should be changed from PXE to HDD
You see some fading across your papers when printing things using a laser printer. The black color appears to be more faded than the other colors on your documents. What is the BEST solution to this problem?
Replace the toner cartridge
You are troubleshooting a computer, and your supervisor believes that the issue is with the workstation’s RAM. Which of the following symptoms did your supervisor likely observe?
Continous rebbots
What would give the notice “failure predicted on hard disk 0”
SMART
Blank screen on boot
Video, RAM, CPU or BIOS config
BSOD causes ?
Bad hardware, bad drivers or bad app. Check the code given
Trouble shoot steps for BSOD
Rollback
Reseat hardware
Run hardware diagnostics
Printer lines down page, cause ?
Inkjet clean print heads
Laser scratch on drum
Echo images from previous prints ?
Not cleaning properly
Laser printer print jobs smudges ?
Toner not fusing properly
After installing the OS and rebooting the computer, you see the “Operating System Not Found” error on your display. You verify that the boot.ini file is configured properly, but the error still appears. What is MOST likely causing this error?
An incompatible partition is marked a active
You are troubleshooting a workstation for a customer. The workstation will not boot. When it is powered on, an error message of “OS not found” is displayed on the screen. What is the MOST likely solution to fix this error?
MBR (Master Boot Record) or GPT (Globally Unique ID Partition Table) is corrupted or faulty. If this occurs, you should reboot into the Windows recovery mode and use the ‘bootrec /fixboot’ command to fix the GPT.
Flickering image on a projector, most likely cause ?
Laptop-projector cable not secured properly
“Error loading operating system, BOOTMGR is missing, Press Ctrl+Alt+Del to restart.” What actions should you take first?
Recovery mode
CLI>”bootrec /fixmbr”
A technician believes that a hard drive is not recognized by the system based on an error message displayed on the screen. Which error messages was being displayed?
No boot device available” is an error message that indicates the workstation is not recognizing the hard drive
If certain pins on a VGA connector are damaged what could you see on the monitor ?
Incorrect colours
What metric should you consider to compare the performance of an SSD or HDD?
The input/output operations per second (IOPS)
Whenever you reboot your domain controller, you notice it takes a very long time to boot up. As the server is booting, you hear noises that sound like a steady series of clicks coming from the hard drive. What is the BEST action to help speed up the boot time of the server?
Defrag
You are troubleshooting a customer’s PC. You realize there is a problem with the RAM and decided to replace the faulty module. You turn on the PC, and after a few seconds, you hear a single beep. What does hearing a single beep indicate?
BIOS completed POST
If an image displayed by your projector is to dim, what’s the first thing to try ?
Try increasing the contrast
Your Windows 10 machine has just crashed. Where should you look to identify the cause of the system crash and how to fix it?
BSOD check the stop code
