I.T. TEST Chapter 1

A customer needs additional storage space on an older computer. What will the technician look at in the computer to determine if an additional hard drive can be added?

an available PATA/SATA connection...PATA supports two devices per cable. PATA cables sometimes have only one device connector. A new PATA cable could be purchased that had two device connectors. Each SATA device, on the other hand, requires a SATA port and a SATA cable.

Which characteristic describes a DIP?

an individual memory chip that has dual rows of pins used to attach it to the motherboard

Which tool can protect computer components from the effects of ESD?

antistatic wrist strap...An antistatic wrist strap equalizes the electrical charge between the technician and the equipment and protects the equipment from electrostatic discharge.

Which two devices are considered input devices?

biometric authentication device and digital camera...Biometric authentication devices and digital cameras are considered input devices. Speakers, projectors, and printers are all considered as output devices.

A customer comes into a computer parts and service store. The customer is looking for a device to provide secure access to the central server room using a retinal scan. What device should the store owner recommend to accomplish the required task?

biometric scanner

Which characteristic describes GDDR SDRAM?

chips specifically designed for video graphics that are used in conjunction with a dedicated GPU

Which characteristic describes PROM?

chips that are manufactured blank and then can be programmed once by a PROM programmer

Which characteristic describes ECC memory?

chips that can detect multiple bit errors and correct single bit errors in memory

Which characteristic describes DDR3 SDRAM?

chips that run at clock speeds of 800 MHz and have a connector with 240 pins

Which component controls the communications and interactions between the CPU and other components on the motherboard?

chipset...The chipset controls communication between the CPU and other computer components.

A customer comes into a computer parts and service store. The customer is looking for a device to scan some old family photos into a laptop. What device should the store owner recommend to accomplish the required task?

flatbed scanner

Which statement describes a characteristic of SRAM in a PC?

it is used for cache memory...SRAM is used for cache memory. It takes a small, but constant source of power to function.

A customer comes into a computer parts and service store. The customer is looking for a device to train pilots how to land and take off in a computer simulation environment. What device should the store owner recommend to accomplish the required task?

joystick or gamepad

A customer comes into a computer parts and service store. The customer is looking for a device to manually input text for a new networking textbook that the customer is writing. What device should the store owner recommend to accomplish the required task?

keyboard

A customer comes into a computer parts and service store. The customer is looking for a device to allow secure access to the main doors of the company by swiping an ID card. What device should the store owner recommend to accomplish the required task?

magstripe reader

Refer to the exhibit. Which two port types are shown in the graphic?

network and USB...The port on the left is the USB port. The port on the right is the network port.

A technician looks at a motherboard and sees a 24-pin connector. What component would connect to the motherboard through the use of this 24-pin connector?

power supply

A customer comes into a computer parts and service store. The customer is looking for a device to display a promotional presentation to a large audience at a conference. What device should the store owner recommend to accomplish the required task?

projector

Which unit of measurement is used to indicate the hard drive speed?

revolutions per minute...Revolutions per minute (RPM) is the speed at which the spindle in a hard drive spins. The faster the spindle spins, the faster the data can be retrieved from the platters.

A customer comes into a computer parts and service store. The customer is looking for a device to help a person with accessibility issues input instructions into a laptop by using a pen. What device should the store owner recommend to accomplish the required task?

stylus

Which two storage devices use a magnetic medium for storing data?

tape drive and hard disk drive...A hard drive, or hard disk drive, is a magnetic storage device that is installed inside the computer. The hard drive is used as permanent storage for data. A tape drive is a magnetic storage that is most often used for backup or archive data. Magnetic tapes are used to store data via a magnetic read/write head.

Why is it important to ground both computers and network devices?

to provide a path of least resistance for stray current...In the event of stray current being generated by a fault within the computer, the ground will provide a path of least resistance for the current to flow harmlessly away.

Which adapter would a technician install in a desktop computer to enable a video signal to be recorded from a video recorder to the computer hard drive?

video capture card...A video capture card enables video to be saved as a file on the computer hard drive from a video recorder. A TV tuner card enables television signals to be received and viewed by the computer. A video adapter enables the computer to display computer output on a screen. A network interface card enables the computer to connect to a data network.

What three voltages are commonly provided by the power supply to the various components inside the computer?

3.3 volts, 5 volts, and 12 volts...Computer power supplies typically deliver three voltages to various components inside the computer. These are 3.3 volts for CPUs, 5 volts for motherboard components, and 12 volts for disk drive motors.

A customer comes into a computer parts and service store. The customer is looking for a device to help when repairing an airplane and that will allow the customer to see and interact with the repair manual at the same time. What device should the store owner recommend to accomplish the required task?

AR headset

What is an active cooling solution for a PC?

Add an additional case fan...Active cooling solutions require power (like adding a case fan) while passive cooling solutions do not.

Which statement describes the proper use of an anti-static wrist strap?

An anti-static wrist strap should make contact with the skin...ESD can cause permanent damage to electrical components. An anti-static wrist strap must be worn and grounded when working on a PC. Computer case paints may not be conductive and thus it is better to ground the bare section of a computer case.

A technician is building a thick client workstation that would be used to run a database and wants to ensure the best protection against errors. What type of memory would be best suited for this?

ECC...RDRAM, DDR2, and DDR3 RAM do not offer any error correction abilities for data within the memory module. ECC RAM allows for the detection of multiple bit errors and correction of single bit errors within the memory modules.

Which type of interface was originally developed for high-definition televisions and is also popular to use with computers to connect audio and video devices?

HDMI...High definition multimedia interface, or HDMI, was originally a television standard. However, because it has many digital features, it is also a popular interface to connect audio and video devices to computers.

Hard drives in a grocery warehouse keep failing because of vibrations in the warehouse environment. What would be a possible solution for this high failure rate?

Install an SSD drive in each computer...SSD drives are an outstanding choice in extreme temperatures, in unusual environments, and in an environment where there are vibrations.

Which statement describes a characteristic of GDDR Synchronous Dynamic RAM?

It is used in conjunction with a dedicated GPU...GDDR Synchronous Dynamic RAM is specially designed for graphics and is used in conjunction with a GPU.

A customer has a computer for a home business, but wants to have another computer as a web server. What would be the best solution for the customer to share the monitor, mouse, and keyboard between the two computers?

KVM switch...A KVM switch allows sharing the keyboard, video and mouse between computer systems.

A customer comes into a computer parts and service store. The customer is looking for a device to allow users to tap and pay for their purchases. What device should the store owner recommend to accomplish the required task?

NFC device

Which type of adapter is shown?

Network Interface...The card that is shown in the exhibit is a network interface adapter with an RJ-45 port which is used to connect the computer to a network via a network cable.

From which type of data storage does the CPU load information for processing during normal operation?

RAM...RAM is the temporary storage to which data and programs are loaded by the CPU for processing. ROM is read-only memory. Its content will not be altered by the CPU during normal operation. Both the hard drive and an SSD are data storage devices. The CPU will send data to them for storage or retrieve data from them and load into RAM for processing.

Which type of memory is primarily used as cache memory?

SRAM

Which two components usually interface directly with the Southbridge chipset on the motherboard?

USB ports and hard drive...The Southbridge chipset allows the CPU to communicate with the hard drive and USB ports (and other I/O ports). CPU access to RAM, video card, and PCIe slots is provided by the Northbridge chipset.

Which type of device would be used on a laptop to verify the identity of a user?

a biometric identification device...As biometric identification devices, laptops commonly use a fingerprint scanner or, for facial recognition, a camera.

Which characteristic describes ROM?

a chip that cannot be erased or rewritten and is now obsolete

Which characteristic describes EPROM?

a chip that is nonvolatile and can be erased by exposing it to strong ultraviolet light

Which characteristic describes a SIMM?

a small circuit board that holds several memory chips and has a 30- or 72-pin configuration

Which two activities are normally controlled by the Northbridge part of the chipset?

access to the RAM and access to the video card...The Northbridge chipset generally controls access to the RAM, video card, and the speeds at which the CPU can communicate with them.