Hardware and Network Troubleshooting (4) Flashcards
A worker drove heavy machinery over a bundle of unprotected network cables, and now you are replacing them. Your in the wiring closet and need to attach the cables to a 110 block. Which tool will you use to do this?
Crimper
Punchdown tool
Cable tester
Punchdown tool
If you’re working on a larger network installation, you might use a punchdown tool. It’s not a testing tool but one that allows you to connect (that is, punch down) the exposed ends of a wire into wiring harnesses, such as a 110 block (used many times in connectivity closets to help simplify the tangled mess of cables)
You are consulting with a user who has a failed hard drive in a Windows 7 computer. the user needs to get critical data off the drive, but he did not make a backup. Are there any options for him to recover the data?
Use the Windows Disk Repair tool to create a backup and then restore the backup to a new hard drive
Use a file recovery service or software package to try to recover the data
Install a second hard drive of the same or larger size. During Windows installation, choose Recover Contents Of Hard Drive from the Advanced Options menu
Use a file recovery service or software package to try to recover the data
If your hard drive fails completely and you need to get critical data off it, there are third-party companies that provide file recovery software and services. These services are generally very expensive. (And you should have been backing up the drive in the first place!)
In the morning a user calls from his desk and reports that his laptop will not connect to the wireless network. He had never had a problem connecting to the wireless network from that location. When you look at his wireless adapter, you notice that there are no lights illuminated. What is most likely the problem?
He is not receiving a Wi-Fi signal
The SSID cannot be found
His wireless card is disabled
His wireless card is disabled
If your wireless networking isn’t working, check to make sure that the LEDs on your network card are functioning. If there are no lights, it could indicate a problem with the card itself or, on some cards, that there is no connection or signal. Considering he received a signal in that location previously, it’s most likely something to do with the card. First, make sure the wireless card is enabled through the OS
A user calls the help desk stating that the icons on her computer screen are huge. She can see only about six of them, and she can’t see the Start menu. What most likely caused this issue?
Failing backlight
Incorrect video resolution
Incorrect video driver
Incorrect video resolution
Oversized images and icons are related to screen resolution; it usually means that your resolution is set too low for the monitor or projector you are using. Increase the resolution and the issue should disappear
A user calls you about a printer not working. The user is standing next to the printer while you are in the next building. What can the user do to be helpful in your diagnosing the problem?
Read the printer error code
Remove the jammed paper
Check the network link light
Read the printer error code
Without knowing the printer’s problem, it would be most helpful if the user can tell you the error code seen on the printer’s display. The error code might signify a paper jam or no connectivity, but knowing the error code will save the guesswork and possibly avoid creating more problems
Your iPhone 6 has appeared to lock up. The touch screen is unresponsive. You press and hold the power button, but it does not turn off. What should your next step be?
Hold the power button and the sleep/wake button simultaneously for 10 seconds and the phone will reboot
Use a paper clip to press the recessed reset button on the bottom of the phone to reset the phone
Hold the power button and the up and down volume buttons simultaneously for 10 seconds and the phone will reset
Hold the power button and the sleep/wake button simultaneously for 10 seconds and the phone will reboot
If an iPhone is entirely frozen, all you really can do is power it off and then back on. You might need to hold the power button down for several seconds to force the device to power off. If the power button does not work, you can reset an iPhone by pressing and holding the power button and the sleep/wake button simultaneously for about 10 seconds. The Apple logo will appear, and the phone should reset
The laser printer in your office recently started producing images that are not completely set. When the images come out, people are smudging them as they pick them up. What is causing this problem?
Fusing assembly
Drying assembly
Charging corona
Fusing assembly
The fusing assembly heats up the toner, and the toner melts into the paper. If the fuser isn’t heating properly, images can smudge
You frequently need to carry your laptop around the building as you troubleshoot computer issues. In several places, you notice that the Wi-Fi connection drops completely. What is the most likely cause of this problem?
Low RF signal
Oversaturated WAP
Failing Wi-Fi antenna in the laptop
Low RF signal
The most likely cause of this intermittent Wi-Fi issue is a low RF signal. If you get too far from a WAP, the signal will be too weak and the Wi-Fi will disconnect
You have just installed a printer on your client computer. When you print to the printer, the output is completely garbled characters. What is the most likely cause of this problem?
The print spooler
The printer driver
The print queue
The printer driver
The correct printer driver needs to be installed for the printer and operating system. For example, if you have an HP LaserJet III and a Windows 10 computer, then you need to install an HP LaserJet III driver made for Windows 10. If this is not done, you will get garbage out of the printer
A user calls to report that he can’t access the internet or a corporate server. However, he is still able to print to a printer nearby. He has not received any error messages. Other users in his area are also unable to access the internet. What is most likely the problem?
IP address conflict
Default gateway down
Network card failure
Default gateway down
You can immediately rule out client-side hardware issues because the user can connect to some resources. You just need to figure out why he can’t connect to others. This is most likely caused by one of two things: a configuration issue or a connectivity device (such as a router) problem. Since it’s affecting multiple people, it’s probably something to do with the router
A user’s laptop computer does not display anything on the screen, although the power light and other indicator lights are on. You plug in an external monitor, and after you toggle the LCD cutoff switch, an image appears on the external monitor. Which components are most likely causing the problem? (Choose two)
Video driver
Backlight
Screen
Video card
Backlight
Screen
If a laptop does not display any video, it could be the screen or the video card. To test it, plug in an external monitor (that you know works), and use the function keys on the laptop to switch to external video output. If that doesn’t work, it’s likely that the video card is defective. If the external monitor works, you know it’s a problem with the display on the laptop. The backlight (or inverter) could be dead or it could be the screen
You have an Android [+phone and it’s running very slowly. The apps aren’t working as fast as they used to, but you still have plenty of free memory, you have rebooted the phone several times and it’s still slow. What should you try next?
Reset the phone to factory specifications
Uninstall and reinstall all apps
Get a new phone
Reset the phone to factory specifications
If the phone is really slow but isn’t completely locked up, isolate the issue. Is it one app or overall performance? It could be that apps are running in the background and need to be closed. Shutting down those apps or powering the device off and then back on is a good step. You can also check to see how much memory is available. If it’s one app giving you problems instead of the entire device, look for updates to the app or delete and reinstall the app. Finally, if none of these steps works, perform a restore to factory settings. If the problems persist, it’s time for a new device
A technician is troubleshooting a RAID-5 array with four hard disks. One of the disks has failed. What can she do to recover the array?
Replace the failed disk and rebuild the array
Replace the failed disk and restore from backup
Remove the failed disk and rebuild the array
Replace the failed disk and rebuild the array
If you’re using RAID-5 (disk striping with parity), a single drive failure usually means that your data will be fine, provided you replace the failed drive. If you lose multiple drives at the same time, you will need to restore from backup
The laser printer you are using has started producing all-black pages. What should you do to fix the problem?
Use the maintenance kit to clean the printer
Replace the toner cartridge
Turn the printer off and back on again
Replace the toner cartridge
All-black pages happen when the charging unit (the charging corona wire or charging corona roller) in the toner cartridge malfunctions and fails to place a charge on the EP drum. Because the drum is grounded, it has no charge. Anything with a charge (like toner) will stick to it. As the drum rotates, all of the toner is transferred to the page and a black page is formed. Replace the toner cartridge. Other possible causes not listed include a defective DC Controller PCA or a defective high voltage power supply
You have installed an internal RAID controller and configured a RAID-5 array on it with four hard disks. It has been operating normally. Today when you boot up, you receive an error message saying, “RAID not found.” Which component is likely causing this issue?
One of the four hard disks
The RAID controller
The system BIOS
The RAID controller
If the system had been operating normally but now tells you RAID not found, it’s likely something is wrong with the RAID controller. Double-check to ensure that the RAID controller BIOS is configured properly and everything is connected as it should be
