Unit 3 HW Review
_____ is used to temporarily hold small units of program instructions and data immediately before, during, and after execution by the central processing unit (CPU). a. A register b. The control unit c. The motherboard d. Main memory
a. A register
____ are used in standardized tests, including the SAT and GMAT tests, and to record votes in elections. a. Optical mark recognition (OMR) systems b. Magnetic Ink Character Recognition (MICR) devices c. Optical character recognition (OCR) systems d. Speech recognition devices
a. Optical mark recognition (OMR) systems
___ are the most powerful computers with the fastest processing speed and highest performance. a. Supercomputers b. Mainframe computers c. Blade servers d. Workstations
a. Supercomputers
A type of memory whose contents are not lost if the power is turned off or interrupted is said to be _____. a. nonvolatile b. nonadjacent c. inaccessible d. unarbitrary
a. nonvolatile
____ is a storage technology that is primarily used only for backups. a. Compact disc b. Magnetic tape c. Cache memory d. Magnetic disk
b. Magnetic tape
____ are used to support engineering and technical users who perform heavy mathematical computing, computer-assisted design (CAD), video editing, and other applications requiring a high-end processor. a. Desktops b. Netbooks c. Workstations d. Notebooks
c. Workstations
the component of a computer that provides the CPU with a working storage area for program instructions and data is called the __________. a. processor b. input/output device c. main memory d. bus
c. main memory
The process of converting human-readable data into machine-readable form is called _____. a. source data automation b. data input c. data conversion d. data entry
d. data entry
Carson's supervisor has asked him to review a variety of portable computers for possible purchase for their company's employees. Which of the following should Carson NOT consider buying? a. notebooks b. laptops c. tablets d. nettops
d. nettops
Completing an instruction involves two phases—instruction and execution—which are each broken down into two steps for a total of four steps. Which of the following is NOT one of the four steps? a. fetch instruction b. execute instruction c. store results d. process data
d. process data
A _____ is a low-cost, centrally managed computer with no internal or external attached drives for data storage with limited capabilities. a. workstation b. cloud computer c. nettop computer d. thin client
d. thin client
3D printing is ________. a. printing illusions on paper b. the same as 2D printing c. for kids to play with d. used to make solid products
d. used to make solid products
A liquid crystal display (LCD) functions by exciting organic compounds with electric current to produce bright and sharp images. a. True b. False
false
A redundant array of independent/inexpensive disks (RAID) is a method of storing data so that data can be accessed more quickly. a. True b. False
false
A tablet computer is a low-cost, centrally managed computer with no internal or external attached drives for data storage. a. True b. False
false
Completing an instruction involves two phases (instruction and execution), which are each broken down into three steps in each phase. a. True b. False
false
Primary memory, which holds program instructions and data, is not associated with the central processing unit (CPU). a. True b. False
false
RAM stands for random access memory; a form of memory that holds its contents even if the current is turned off or disrupted. a. True b. False
false
Solid state storage devices (SSDs) store data in hard disk drives or optical media rather than memory chips. a. True b. False
false
A digital video disc (DVD) looks like a compact disc read-only memory (CD-ROM), but has a greater storage capacity and can transfer data at a faster rate. a. True b. False
true
Depending on the brand of tablet you purchase, you may be able to enter data by typing on a keyboard, writing on the screen with a stylus, or speaking into the tablet's microphone. a. True b. False
true
Each central processing unit (CPU) produces a series of electronic pulses at a predetermined rate, called the clock speed, which affects machine cycle time. a. True b. False
true
In a typical computer configuration, secondary storage has a much larger capacity than the volatile random access memory. a. True b. False
true
Massively parallel processing systems are a form of multiprocessing that speeds processing by linking hundreds or thousands of processors to operate at the same time. a. True b. False
true
Secondary storage can store large amounts of data, instructions, and information more permanently than allowed with main memory. a. True b. False
true
Some smartphones allow you to take notes and to "write" emails or text messages by speaking into the phone. These are examples of speech-recognition technology. a. True b. False
true
There are a number of compact disk devices including read-only, recordable, and rewritable. a. True b. False
true
You have lots of images on your hard drive totaling 500 million bytes. A 2 Gigabyte storage device will be adequate to store those photos a. True b. False
true
