Hardware (2) Flashcards
You have a motherboard that supports up-plugging. Which of the following statements regarding PCIe are true? (Choose two)
You can put an x1 card into an x8 slot
You can put an x8 card into an x16 slot
You can put an x8 card into an x1 slot
You can put an x16 card into an x8 slot
You can put an x1 card into an x8 slot
You can put an x8 card into an x16 slot
With up-plugging, you can put a smaller PCIe card into a larger slot, even though it does not fill it up completely. For example, you can insert an x8 card into an x16 slot. The x8 card won’t completely fill the slot, but it will work at x8 speeds
A technician needs to increase the fault tolerance of his computer’s storage system, and he has two hard drives available. Which of the following options is his best choice?
Install both drives and implement RAID-0
Install both drives and implement RAID-1
Install both drives and implement RAID-5
Install both drives and implement RAID-1
RAID-1 is called disk mirroring; it writes data simultaneously to both drives. If one drive fails, the other still has a working copy of the data. RAID-0 is disk striping and does not provide fault tolerance. RAID-5 is striping with parity and provides fault tolerance, but it requires three hard disks
During which step of the laser printer process does a fluorescent lamp discharge the photosensitive drum?
Cleaning
Charging
Exposing
Cleaning
During the cleaning step, a rubber blade inside the toner cartridge scrapes any toner left on the drum into a used toner receptacle, and a fluorescent lamp discharges any remaining charge on the imaging drum. (Remember that the drum, being photosensitive, loses its charge when exposed to light.)
Which type of laptop monitor technology uses a current of electricity to stimulate a sealed panel of inert gas?
LED
Plasma
LCD
Plasma
Plasma displays place electrodes in front of and behind sealed chambers full of inert gas (such as neon) and vaporized mercury. Current is run through the gas to ionize it and cause it to light up
What type of front- or top-panel connector uses a standard 3.5 mm jack to make connections?
USB
Audio
FireWire
Audio
The audio connector on the front or top panel will use a round, 3.5 mm connector. You can plug speakers into it. Alternatively, you could plug a headset with a boom microphone into it for additional privacy
The motherboard in your desktop computer supports dual-channel memory. Which of the following statements regarding RAM is true?
The RAM will work only if it’s installed in pairs
The RAM will work if only one module is installed, but only at half of its rated speed
The RAM will work if only one module is installed
The RAM will work if only one module is installed
With most dual-channel motherboards, RAM will work just fine if one module is installed. However, you will get better performance if you fill the entire bank
A single lane of PCIe 4.0 operates at what data rate?
250 Mbps
1 GBps
2 GBps
2 GBps
There are four major versions of PCIe currently specified: 1.x, 2.x, 3.0, and 4.0. For the four versions, a single omnidirectional lane operates at a data rate of 250 MBps, 500 MBps, approximately 1 GBps, and roughly 2 GBps, respectively
A technician needs to replace a failed power supply in a desktop computer. When choosing a replacement power supply, which two specifications are most important to consider? (Choose two)
Wattage
Dual rail
Dual voltage options
Number of connectors
Wattage
Number of connectors
When installing or replacing a power supply, always make sure that it has enough wattage to power the components in the computer. In addition, it should have enough connectors to connect to all the components that require their own power. Dual rail and dual voltage are optional features
What is an advantage of using double-sided memory over single-sided memory?
It allows the memory to operate twice as fast
It allows the CPU to access twice as much RAM at one time
It allows for twice a much memory to be used in the same amount of space
It allows for twice a much memory to be used in the same amount of space
Double-sided memory has chips on both sides of the RAM module instead of just on one side. It allows for doubling the amount of RAM on the module, so you get twice as much memory on one stick. This contrasts with “dual rank,” a term seen when describing memory modules. The “dual rank” module may have two sets of chips but only one rank or channel is accessible by the system at one time
You need to replace the magnetic hard drive in your manager’s laptop. She wants a high-speed, high-capacity drive. What are the most common issues associated with her request? (Choose two)
Increased battery usage
Increased heat production
Decreased component life span
Decreased space for other peripherals
Increased battery usage
Increased heat production
Faster hard drives transfer more data than slower hard drives, but there is no specific correlation between hard drive speed and its life span. The downsides to faster hard drives can be increased battery usage and heat production
What are the two speeds at which PCI expansion buses can operate in desktop computers? (Choose two)
33 MHz
66 MHz
133 MHz
266 MHz
33 MHz
66 MHz
PCI expansion buses operate at 33 MHz or 66 MHz (version 2.1) over a 32-bit (4-byte) channel, resulting in data rates of 133 MBps and 266 MBps, respectively, with 133 MBps being the most common, server architectures excluded
A designer from the corporate office is visiting your field office. He tries to print from his MacBook Pro to a networked printer, but it does not work. Local users in the office are able to print to the device using their Windows 8 computers. What would most likely solve the problem?
Select the Enable Mac Printing option in the print server configuration settings
Select the Enable Bonjour option in the print server configuration settings
Install a Mac printer driver on the print server
Install a Mac printer driver on the print server
Print servers need to have the appropriate drivers for all operating systems that will be clients. It’s possible that this print server does not have the Mac driver installed
The users on your network in the Human Resources department often have sensitive materials shown on their computer screens. What is their best option to dramatically limit the viewing angle of their monitors?
Lower the contrast setting
Install an antiglare filter
Install a privacy filter
Install a privacy filter
A privacy filter is a panel that fits over the front of a display and, through a polarization affect, intentionally limits the viewing angle of the monitor
You have an OLED monitor that you just plugged into a desktop computer. One of your co-workers changes the resolution from 1920x1080 to 1920x1200, but then the image looks highly distorted. What is the most likely cause of this?
The monitor has a native resolution of 1920x1080
The video adapter has a native resolution of 1920x1080
The monitor is plugged into the wrong monitor interface to support the new resolution
The monitor has a native resolution of 1920x1080
Most digital monitors have a native resolution, which is a single, fixed resolution that they support. Attempting to change the resolution may result in distorted images, or the image may not display at all
Which of the following are advantages of using a CPU liquid cooling system over an air-based system? (Choose two)
Easier to install and maintain
More efficient
Quieter
Safer for internal components
More efficient
Quieter
Liquid cooling systems are generally quieter than air-based systems that use fans, and they are more efficient at cooling the processor. However, they are more complex to install, and if the liquid were to leak out, that could cause damage to internal components
You need to perform preventive maintenance on an impact printer. What are two areas you should examine that you would not need to on most ink-jet printers?
(Choose two)
Ink cartridges
Output tray
Print head
Tractor feed mechanism
Print head
Tractor feed mechanism
Impact printers create images by impacting the paper, which can wear down the print head. Always check that. Also, impact printers most often use tractor feed mechanisms to load the paper, and they can wear down as well
Which expansion bus technology uses lanes, which are switched point-to-point signal paths between two components?
PCI
PCI-X
PCIe
PCIe
PCIe uses lanes. Each lane between any two intercommunicating devices comprises a separate pair of wires for both directions of traffic, which dramatically increases speed
You are installing new computers in a machine shop. The computers on the shop floor don’t need to run local applications or have their own hard drives, but they do need to connect to the shop’s server. What type of custom configuration should you recommend?
Thin client
Thick client
CAD/CAM workstation
Thin client
A thin client is any machine that divests itself of all or most local storage and varying levels of RAM and processing power without necessarily giving up all ability to process instructions and data
Which PC component reboots the computer from a cold startup point without removing power from the components?
Power button
Reset button
Reboot button
Reset button
The reset button, usually located on the front or top panel, allows a user to reboot the computer from a cold startup point without removing power from the components. This can be particularly helpful for dealing with software lockups
Which type of LCD panel is considered to have the best colour representation at wider angles of viewing?
TN
IPS
LED
IPS
The two most popular methods of manufacturing LCD panels are twisted nematic (TN) and in-plane switching (IPS). Of the two, IPS is regarded as having the best color representation in all angles, while TN is faster and less expensive. LED and plasma are not types of LCD panels
You have a user who needs recommendations for installing a home server PC. She wants her family to be able to share files and videos on their home network. She also wants data to be protected in the event of a hard drive failure. Which two components do you recommend she include? (Choose two)
Dedicated print server
RAID array
Gigabit NIC
Dual processors
RAID array
Gigabit NIC
A home server PC should be able to handle media streaming as well as file and printer sharing. A dedicated print server is not likely needed, though, as the operating system can function as a print server. A gigabit NIC will be helpful to manage the network traffic, and a RAID array can help protect against hard drive failure
What peripheral type is commonly used by a store for tracking inventory or checking out at the register?
Mouse/trackball
Barcode scanner/QR scanner
Screen projector
Barcode scanner/QR scanner
A barcode scanner/QR scanner can quickly look over a tagged or marked item for easy identification without physically touching the item
When purchasing a new power supply from abroad, what must be considered before connecting the power supply to your machine?
Input 115V vs 220V
Input 5.5V vs 12V
Output 115V vs 220V
Input 115V vs 220V
When connecting a new power supply, especially one from a different country, you must check the voltage the supply expects to receive as input from the power source. Most power supplies will have a small switch to toggle between 115V vs 220V input
