CIT CH 2
________ measure human characteristics such as fingerprints and eye retinas.
biometric scanners
The storage capacity of a single-layer ________ is 25 GB.
blu-ray disc
________ represent audio or video data by a series of 0s and 1s
digital devices
The ________ connects disk drives to the processor.
drive controller
Peripheral devices are connected to the system unit through ________.
drive controllers
Which of the following is NOT a modifier key?
capslock
________ is measured in billions of cycles per second
clock speed
A ________ projector has hundreds of thousands of tiny swiveling mirrors that create an image.
DLP
Up to ________ devices can share a single USB port.
127
The QWERTY keyboard was developed in ________.
1874
FireWire was initially released by ________ in 1995.
Apple
The ________ is a program that is used to start up the computer.
BIOS
Which of the following is NOT a type of logic calculation?
But
The ________ is considered to be the brain of the computer
CPU
The ________ is the measure of instruction cycles per second
Clock speed
The CPU consists of the arithmetic logic unit and the ________
Control unit
The ________ is part of the processor that manages the movement of data through the CPU
Control unit
What is the standard video port found on video cards?
DVI
________ hold the storage devices and openings for peripheral devices.
Drive bays
What type of printer produces the highest quality photo prints?
Dye sublimation
Clock speed is measured in trillions of cycles per hour
False
In 1831, Alexander Graham Bell made the first telephone call
False
Memory is permanent storage that your computer uses to hold instructions and data
False
NFC is a method used to read magnetic strips on plastic cards such as a credit card
False
On a notebook computer a network cable can be connected to the phone port
False
Similar to smartphone screens monitors work by lighting up pixels on the screen
False
Volatile memory does not need power to keep its data
False
When purchasing a printer you should factor in the cost of paper.
False
Which type of port enables peer-to-peer communication between devices such as video cameras?
FireWire
Which feature results in sharper images?
Image stabilization
The most common personal printers are ________ printers.
Inkjet
A game controller and microphone are ________ devices for use with video games and simulations.
Input
A ________ projector passes light through a prism that divides the light into three beams.
LCD
What type of monitor is composed of extremely thin panels of organic molecules sandwiched between two electrodes?
OLED
Data is stored on ________ using a laser to either melt the disc material or change the color of embedded dye
Optical discs
On ________data is stored by using a laser to melt the material or to change the color of an embedded dye
Optical discs
A ________ is a connection point that is used to attach peripheral devices to the motherboard.
Port
Which type of memory is a volatile form of memory that holds the operating systems, programs, and data the computer is currently using?
RAM
________ is temporary memory.
RAM
Inventory tracking electronic toll collection, and passports use ________ technology.
RFID
The ________ is used to connect drives to the motherboard.
SATA
________ is a non-mechanical form of storage which stores data on a chip
Solid-state storage
Pointing devices such as the mouse and ________ work by moving a pointer on the screen.
Touchpad
A multi-core processor consists of two or more processors that are integrated on a single chip
True
An LED emits light when an electrical current passes through it
True
Braille embossers are special printers that translate text to Braille
True
Computers perform four tasks: input+processing+output+storage
True
Data flows between computer components over wires on data buses.
True
Ergonomic keyboards have a curved shape to reduce strain on the wrists
True
Experts worry that USB flash drives pose a great security risk because people can carry a lot of critical or personal data on them
True
In digital devices audio or video data is represented by a series of 0s and 1s
True
QR code readers on cell phones make shopping in stores an interactive activity
True
SATA is up to three times faster than EIDE
True
Some display adapters can support multiple monitors and a computer can have multiple display adapters
True
The heat sink and cooling fan keep the processor from overheating
True
The motherboard provides the way for peripheral devices to connect to your computer
True
USB devices are hot-swappable
True
Where should you place a notebook computer when you are using it?
a table
The ________ allows you to connect additional peripheral devices to a computer.
adapter card
________ signals form smooth continuous waves, unlike square digital waves
analog
A(n) ________ senses the conductive properties of an object such as a finger or a specially designed conductive stylus.
capacitive screen
Modifier keys turn a feature on or off when pressed
false
The CMOS is a legacy drive interface that may still be found on older computers
false
________ are small, portable, solid-state drives,
flash drives
________ are the primary mass storage devices in a computer system
hard drives
________ store data magnetically on metal platters.
hard drives
What type of printer is the most common personal printer?
inkjet
What type of printer produces the sharpest text at a much lower cost per page?
laser
Which of the following is NOT a pointing device?
laser pointer
The ________ cache is a separate chip that takes longer to access.
level 2
A(n) ________ connects a computer to a telephone line for dial-up Internet access.
modem
________ are used to connect a computer to a telephone line for dial-up Internet access
modems
The main circuit board of a computer is the ________.
motherboard
________ enables devices to share data with each other by touching them together or bringing them within a few centimeters of each other
near field communication
A multi-core processor contains multiple processors that are stored on ________ chip(s)
one
Which of the following is NOT true about computers?
peripherals are only connected to a computer through a USB port
When the machine cycle performs the execute step it is ________
processing a command in the ALU
The central processing unit is also called the ________.
processor
A touchscreen is a type of ________ screen.
resistive
When the machine cycle performs the fetch step it is ________
retrieving an instruction from the main menu
The ________ encloses and protects the power supply motherboard, processor, and memory of a computer
system unit
The receipts you receive from gas pumps ATMs, and many cash registers are printed by ________ printers.
thermal
What type of printer creates a model from an image by building layers of material such as paper polymers, resin, or metal?
three dimensional
The most common input devices are keyboards and mice
true