Hardware and Network Troubleshooting (7) Flashcards
You are at a Windows server with a command prompt open. You believe that a user is improperly accessing files on a shared folder named docs. On the server, the D:\userfiles folder is shared as docs. Which command will immediately stop the sharing of this folder?
net share D:\userfiles /stop
net share docs /delete
net share docs /stop
net share docs /delete
The net share command is used to share folders on a network as well as stop sharing folders. (And net use will allow users to connect to them.) The proper syntax to share a folder is net share =:. To stop sharing, use net share /delete
You have sent several print jobs to a networked printer and nothing has printed. You do not have a printer administrator access. What can you do to see whether your Windows 7 computer is communicating properly with the printer?
Send the print job in RAW format
Stop and restart the print spooler
Print a test page
Print a test page
If your printer isn’t spitting out print jobs, it may be a good idea to print a test page and see whether that works. The test page information is stored in the printer’s memory, so there’s no formatting or translating of jobs required. It’s simply a test to make sure that your printer hears your computer
You are troubleshooting a laptop with an integrated wireless networking card. The user reports that the laptop will not connect to the internet. When you look at the network card, the connection and activity lights alternate blinking, in a steady pattern. What is the most likely cause of the problem?
No network connection
Failed network card
Unable to reach a DNS sever
No network connection
Some wireless cards will have their connection and activity lights alternatively blink if there is no network connection. If the card had failed, there likely would be no lights on it at all
You are troubleshooting a laptop that has a poor battery life. It will work for only about 30 minutes on a full charge. Which two things should you try first? (Choose two)
Replace the battery
Perform a battery calibration
Drain the battery completely and then charge it fully
Open the Power Management app and set the laptop to run on low energy mode
Perform a battery calibration
Drain the battery completely and then charge it fully
Small devices sometimes suffer from an extremely short battery life. If it’s a laptop, you can try to perform a battery calibration. For all mobile devices, you can try to drain the battery completely and then charge it fully before turning the device back on. If these options don’t work, then it’s likely that the battery needs to be replaced
The name resolution server on your local network does not appear to be resolving hostnames properly. Which command will allow you to verify the entries on this server?
dnslookup
nslookup
namelookup
nslookup
nslookup is a command that enables you to verify entries on a DNS server
You have installed a PCIe RAID controller and want to create a RAID-5 array with three disks. You plug the disks in and boot up the computer. The RAID array is not detected. Where should you go to set up or troubleshoot the RAID array?
Windows Device Manager
The RAID controller’s BIOS
The system BIOS
The RAID controller’s BIOS
Nearly all PCIe RAID controllers will have their own BIOS for setup, configuration, and troubleshooting. Some will have utilities available for use within an operating system as well
A user complains of a loud whining noise coming from her computer. It occurs whenever the computer is on and is relatively constant. Which component is most likely to cause this problem?
RAM
SSD
PSU
PSU
The power supply is the only component listed with moving parts and therefore is the most likely component to cause a whining sound. It’s more than likely a fan. Either it needs to be cleaned (desperately) or replaced. Power supplies that are failing can also sound louder and quieter intermittently because a fan will run at alternating speeds
You have just upgraded the RAM in a desktop computer. After you power on the computer, no video appears on the screen, and the computer produces a series of three long beeps. What does this indicate?
The systems BIOS detected an error in the POST routine
The system BIOS completed the POST routine normally
The motherboard needs to be replaced
The systems BIOS detected an error in the POST routine
Every computer has a diagnostic program built into its basic input/output system (BIOS) called the power-on self-test (POST). When you turn on the computer, it executes this set of diagnostics. If the computer doesn’t perform the POST as it should, one way to determine the source of a problem is to listen for a beep code. This is a series of beeps from the computer’s speaker. A successful POST generally produces a single beep. If there’s more than one beep, the number, duration, and pattern of the beeps can sometimes tell you what component is causing the problem. Check the documentation to determine the specific issue
You are troubleshooting a computer that will not boot up. When the computer powers on, the power supply fan spins, but the computer does not POST. You look at the motherboard and see that a capacitor has swollen and looks ready to burst. What should you do?
Replace the motherboard
Replace the power supply
Replace the capacitor
Replace the motherboard
Many motherboards have capacitors on them, which store electricity. They are short cylindrical tubes. Sometimes, when capacitors fail, they will bulge, and brownish-red electrolyte residue may seep out of the vents in the top. These are called distended capacitors. If a capacitor fails, the best option is to replace the motherboard
A user with an 802.11g network adapter is trying to join your 802.11n network. Her laptop is next to yours, which is connected to the network. However, she is unable to locate the SSID. What is the most likely cause of the problem?
802.11g is not compatible with 802.11n
SSID broadcasting is disabled on the wireless access point
The SSID has been changed
SSID broadcasting is disabled on the wireless access point
The most likely cause is that the router is configured to not broadcast SSIDs. 802.11g and 802.11n are compatible, and she is within range if your computer is connected
You are troubleshooting a laser printer that keeps producing vertical black lines running down the page. Which component is most likely causing this problem?
Pickup rollers
Exit rollers
EP drum
EP drum
A groove or scratch in the EP drum can cause the problem of vertical black lines running down all or part of the page. Because a scratch is lower than the surface, it doesn’t receive as much (if any) of a charge as the other areas. The result is that toner sticks to it as though it were discharged. The groove may go around the circumference of the drum, so the line may go all the way down the page
A user reports that the screen on his tablet computer is very dim and hard to see. He’s adjusted it to the maximum brightness and it’s still dim. Which component is likely causing the problem?
Backlight
Converter
Display
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
You have been troubleshooting a computer, and you believe the power supply has failed. Which of the following tools can you use to test the integrity of the power supply? (Choose two)
Power supply tester
Loopback plugs
POST card
Multimeter
Power supply tester
Multimeter
If you’re curious as to the state of your power supply, you can buy hardware-based power supply testers or multimeters to test it
A user is trying to display a presentation on a projector, but nothing appears on the external screen. She tries toggling her LCD cutoff switch, and it doesn’t help. Another user had just presented on the projector, and it worked fine. Which component is most likely causing the problem?
Backlight
Video card
Inverter
Video card
If the laptop won’t output a screen image to an external monitor or projector, it means one of two things (assuming you know that the monitor or projector works): Either the external VGA port is shot or the function keys aren’t working. In either case, you likely need to replace the motherboard if you want the display to appear on an external device
A user calls to report that she can’t access the internet or any local resources, including no network shares, printers on her email. The IP address on her computer is 169.254.1.102. Which of the following is most likely to have caused this?
Unable to reach a DNS server
Unable to reach a DHCP server
Unable to reach the default gateway
Unable to reach a DHCP server
The address shown is an APIPA/link local address, if your computer is set to receive an IP address from the Dynamic Host Configuration Protocol (DHCP) server and that server doesn’t respond. You can always tell an APIPA/link local address because it will be in the format of 169.254.x.x.
The day after an electrical thunderstorm, you are troubleshooting a computer. After you power it up, it flashes information briefly on the screen and then reboots. It continuously reboots itself after this. Which components are most likely to cause this problem? (Choose two)
Hard drive
Power supply
Motherboard
CPU
Motherboard
CPU
A failing motherboard or CPU may cause continuous reboots
Within the last five minutes, several users in one part of the building have called in to report that they have lost their network connection. It had been working earlier in the day. What is most likely the cause of the problem?
Faulty network card drivers
Bad network cable
Faulty switch
Faulty switch
If the problem affects multiple users, chances are that it’s an issue with the central connectivity device. Suspect an issue with the hub or switch that the computers are plugged into
All computers on your network are having intermittent internet connectivity issues. Some websites work, while others do not. If you want to track the problem down by verifying the path to the problematic websites, which tool should you use?
netstat
tracert
nslookup
tracert
tracert (trace route) is a Windows-based command-line utility that enables you to verify the route to a remote host. Execute the command tracert hostname, where hostname is the computer name or IP address of the computer whose route you want to trace. Tracert returns the different IP addresses the packet was routed through to reach the final destination
A user reports that he cannot see his network shares or email, or even connect to the printer. But local applications are working fine. You ask what has changed since the last access, and he mentions cleaning his desk. What might be the problem?
User might not have logged in
Network cable may not be connected
New group policy
Network cable may not be connected
Given he recently cleaned his desk, it is likely cables were moved. The first thing to check would be the network cable
During a meeting, the manager mentions the projector was giving her problems since the start of the meeting. She had tried the projector from a few laptops with no success. Multiple pop-ups were occurring. but it’s unknown what the pop-up windows reported. What might be your next step?
Open the log for information on failed jobs
Check the light source for failure
Verify that cables were attached
Open the log for information on failed jobs
Opening the projector’s log to review for relevant information is a good step to take. From the description, it doesn’t sound like the culprit was loose cables, lighting, or overheating
