Homework answers / question archive / Chapter 2: Computer Hardware   TRUE/FALSE        1

Chapter 2: Computer Hardware   TRUE/FALSE        1

Computer Science

Share With

---

 

TRUE/FALSE

 

     1.   The main circuit board inside the system unit is called the motherboard.

 

 

     2.   A computer byte is the amount of data (measured in bits) that a CPU can manipulate at one time.

 

 

     3.   RAM consists of nonvolatile chips that permanently store data or programs.

 

 

     4.   The ALU is the section of a CPU core that performs arithmetic involving integers and logical operations.

 

 

     5.   SSD is another name for a flash memory hard drive.

 

 

     6.   CD, DVD, and BD drives are types of optical drives.

 

 

     7.   The quality of scanned images is measured as PPM.

 

 

     8.   RFID refers to the ability of a computer to recognize text characters.

 

 

     9.   Most computers today use CRT monitors.

 

 

   10.   Laser printers form images with toner powder.

 

 

MODIFIED TRUE/FALSE

 

     1.   The CPU is also known as the processor. _________________________

 

 

     2.   ROM is used to store the essential parts of the operating system while the computer is running. _________________________

 

 

     3.   The convenience and universal support of FireWire has made it one of the most widely used standards for connecting peripherals today. _________________________

 

 

     4.   Each machine cycle consists of the fetch, decode, execute, and store operations. _________________________

 

 

     5.   Most hard drives are magnetic. _________________________

 

     6.   The capacity of most USB flash drives today ranges from 1 GB to 256 GB. _________________________

 

 

 

     7.   SAN is a method of storing data on two or more hard drives that work together. _________________________

 

 

     8.   Biometrics is the science of identifying individuals based on measurable biological characteristics. _________________________

 

 

     9.   LED technology uses charged liquid crystals located between two sheets of clear material to form an image on a screen. _________________________

 

 

   10.   Portable printers are usually the printer of choice for home use. _________________________

 

 

MULTIPLE CHOICE

 

     1.   ____ are very small pieces of semiconducting material that contain integrated circuits.

a.	Motherboards	c.	Optical drives
b.	Computer chips	d.	Expansion slots

 

 

 

     2.   The ____ is the main processing device for a computer.

a.	CPU	c.	USB
b.	cache	d.	FPU

 

 

     3.   ____ memory is very fast memory circuitry located near the CPU that is used to speed up processing.

a.	ROM	c.	Cache
b.	Flash	d.	ALU

 

 

 

     4.   The term memory in computers usually refers to ____.

a.	ROM	c.	RAM
b.	BIOS	d.	RAID

 

 

 

     5.   ____ are the fastest type of memory used by the CPU.

a.	ROMs	c.	Caches
b.	RAMs	d.	Registers

 

 

 

     6.   ____ consists of nonvolatile chips.

a.	Flash memory	c.	RAM
b.	ROM	d.	both a and b

 

 

 

     7.   Today, most notebook and netbook computers use ____ to give them additional capabilities.

a.	ExpressCard modules	c.	expansion slots
b.	PC Cards	d.	USB cards

 

 

 

     8.   A ____ is an electronic path over which data can travel.

a.	router	c.	redundant array of disks
b.	bus	d.	sluice

 

 

 

     9.   IEEE 1394 is another name for ____.

a.	USB	c.	RJ-45
b.	PCI	d.	FireWire

 

 

 

   10.   The ____ standard means that a computer automatically configures new devices as soon as they are installed and the computer is powered up.

a.	Plug and Play	c.	Click and Go
b.	Fast I/O	d.	Slot and Start

 

 

 

   11.   In the accompanying figure, the item in box ____ performs the arithmetic and logical operations, as directed by the control unit.

a.	2	c.	5
b.	3	d.	7

 

 

   12.   In the accompanying figure, the item in box ____ stores data and instructions before and during processing.

a.	1	c.	5
b.	3	d.	6

 

 

   13.   In the accompanying figure, the item in box ____ holds the results of processing.

a.	1	c.	4
b.	3	d.	5

 

 

 

   14.   In the accompanying figure, the item in box ____ takes instructions and translates them into a form that the control unit can understand.

a.	2	c.	4
b.	3	d.	6

 

 

 

   15.   The ____ is a small quartz crystal located on the motherboard.

a.	ALU	c.	bus interface
b.	system clock	d.	heat sink

 

 

 

   16.   Magnetic hard drives contain round pieces of metal called ____.

a.	platters	c.	SSDs
b.	cylinders	d.	saucers

 

 

   17.   On most computer systems, the smallest storage area on a hard disk is a(n) ____.

a.	track	c.	SSD
b.	cluster	d.	cylinder

 

 

 

   18.   The accompanying figure shows various examples of ____.

a.	SSDs	c.	external hard drives
b.	flash drives	d.	USB connections

 

 

   19.   ____ are thin circular discs made out of polycarbonate, topped with layers of materials and coatings used to store data and protect the disc.

a.	Platters	c.	SSDs
b.	Optical discs	d.	Hybrid hard drives

 

 

 

   20.   DVD+R dual-layer discs can store up to ____ of data.

a.	700 MB	c.	50 GB
b.	8.5 GB	d.	1 TB

 

 

   21.   ____ are the most common type of storage media for digital cameras and mobile phones.

a.	Mini-CDs	c.	Cache packets
b.	Optical discs	d.	Flash memory cards

 

 

 

   22.   ____ consists of high-performance storage servers that are connected individually to a network to provide storage for the computers connected to that network.

a.	NAS	c.	RAID
b.	SAN	d.	Cloud storage

 

 

 

   23.   Microsoft SkyDrive is an example of ____ storage.

a.	NAS	c.	cloud
b.	SAN	d.	direct

 

 

 

   24.   A smart card is the size of a ____.

a.	postage stamp	c.	sheet of A4 paper
b.	credit card	d.	postcard

 

 

   25.   ____ is a method of storing data on two or more hard drives that work together.

a.	RAID	c.	NAS
b.	SAN	d.	Cloud computing

 

 

   26.   An advantage of magnetic tape for storage is ____.

a.	nonsequential access	c.	durability
b.	speed	d.	price

 

 

 

   27.   A(n) ____ is any piece of equipment that is used to enter data into a computer.

a.	keyboard	c.	processing device
b.	input device	d.	I/O operator

 

 

 

   28.   A digital pen is also called a(n) ____.

a.	stylus	c.	touch pad
b.	trackball	d.	OCR

 

 

 

   29.   A ____ is a rectangular pad most often found on notebook and netbook computers.

a.	touch pad	c.	digital pen
b.	trackball	d.	mouse pad

 

 

   30.   DPI stands for ____.

a.	digits per input	c.	document paging instruction
b.	dots per inch	d.	Data Pre-Internet

 

 

 

   31.   ____ contain tiny chips and radio antennas; the data in them is read by a reader whenever it is in range (from two inches to up to 300 feet or more).

a.	Barcodes	c.	OMRs
b.	Optical scanners	d.	RFIDs

 

 

 

   32.   ____ input data from special forms to score or tally exams, questionnaires, ballots, and so forth.

a.	MICR readers	c.	SSDs
b.	RFID readers	d.	OMRs

 

 

 

   33.   ____ readers are typically used to process bank checks.

a.	OCR	c.	MICR
b.	DRR	d.	SPQR

 

 

 

   34.   ____ is the science of identifying individuals based on measurable biological characteristics.

a.	Eugenics	c.	Heuristical logistics
b.	Biostatics	d.	Biometrics

 

 

 

   35.   A(n) ____ is the most common form of output device.

a.	Web page	c.	printer
b.	display device	d.	audio or video stream

 

 

 

   36.   Of the following, ____ is the most commonly used technology in computer monitors today.

a.	OLED	c.	CVJ
b.	CRT	d.	LCD

 

 

   37.   Of the following, ____ is the most energy-efficient technology.

a.	CRT	c.	OLCD
b.	OLED	d.	LCD

 

 

 

   38.   A ____ is the smallest colorable area on a display device.

a.	byte	c.	pixel
b.	diode	d.	crystal

 

 

 

   39.   All of the following are common types of interfaces used to connect a monitor to a computer EXCEPT ____.

a.	VGA	c.	HDMI
b.	DVI	d.	GPU

 

 

 

   40.   Print speed is usually measured in ____.

a.	dpi	c.	ppm
b.	dot-matrix ratios	d.	dps

 

 

 

Case-Based Critical Thinking Questions

 

Case 2-1

Troy is trying to build an ideal computer system for his house. He is currently looking at all the hardware options available to him.

 

   41.   Troy is comparing the DDR3 rates of different brands of an item. That item would be ____.

a.	ROM	c.	USB cards
b.	RAM	d.	CPUs

 

 

 

   42.   Troy is not planning to upgrade his computer for at least a few years. He’s looking at bus data transfer rates, and knows that the emerging ____ technology seems to offer the fastest speeds of anything on the horizon.

a.	USB 2.0	c.	SuperSpeed USB
b.	FireWire 1.394	d.	Quad-Four FireWire

 

 

 

   43.   Troy sees a CPU with a clock speed rated at 3 GHz. He knows this is ____.

a.	among the fastest on the market	c.	neither a nor b
b.	not the fastest on the market	d.	not enough information to say

 

 

 

   44.   In order to choose the fastest hard disk, Troy examines all of the following details EXCEPT ____.

a.	seek time	c.	rotational delay
b.	latency	d.	data movement time

 

 

 

   45.   Troy wants to be able to move very large amounts of data around from one physical site to another. The technology that currently will let him put the most information on one easily portable device is ____.

a.	DVD+R DL	c.	USB flash drives
b.	flash memory cards	d.	storage servers

 

 

 

   46.   Lastly, Troy is researching various display devices. He discovers that OLED technology has many plusses over LCD technology, including all of the above EXCEPT ____.

a.	energy efficiency	c.	thinner than LCDs
b.	wider viewing angle	d.	none of the above

 

 

 

Case-Based Critical Thinking Questions

 

Case 2-2

Abed works at a computer supply company. This week he has fielded a surprising number of questions about printers.

 

   47.   Abed takes a call from a factory that needs an economical printer to produce large numbers of packing slips and invoices. The emphasis is quantity over quality. Abed suggests that a(n) ____ printer might be just right.

a.	dot-matrix	c.	nonimpact
b.	inkjet	d.	laser

 

 

 

   48.   Next, Abed hears from someone who wants a printer that will deliver the highest resolution. Price is less of a concern. Abed recommends a(n) ____ printer.

a.	ZINK	c.	inkjet
b.	laser	d.	portable

 

 

 

   49.   Abed’s next phone call comes from a college student who needs to print out term papers and decent quality color reports on a budget. Abed easily suggests a(n) ____ printer for her.

a.	inkjet	c.	impact
b.	laser	d.	ZINK

 

 

 

   50.   Lastly, Abed has a long discussion with a potential client about the process known as FDM. The client is most likely a(n) ____.

a.	undergraduate student
b.	author setting up a small home office
c.	architect
d.	traveling salesman who needs a portable printer

 

 

 

COMPLETION

 

     1.   A(n) ____________________ is the smallest unit of data that a binary computer can recognize.

 

 

     2.   A CPU that contains the processing components of multiple independent processors in a single CPU is called a(n) ____________________ CPU.

 

 

     3.   ____________________ cache is the fastest level of cache.

 

 

     4.   A bus’s ____________________ is the amount of data that can be transferred via the bus in a given time period.

 

 

     5.   The key element of the CPU is the ____________________, a device that controls the flow of electrons inside a chip.

 

 

     6.   All storage systems involve two physical parts—a storage ____________________ and a storage ____________________.

 

 

     7.   If the read/write heads of a magnetic hard drive touch the surface of the hard disk, a(n) ____________________ occurs.

 

 

     8.   A(n) ____________________ stores copies of data or programs that are located on a hard drive and that might be needed soon; this can speed up performance and save hard drive wear and tear.

 

 

     9.   With optical discs, the term DL means ____________________.

 

 

   10.   A jump ____________________ consists of flash memory media integrated into a self-contained unit that connects to a computer or other device via a standard USB port and is powered by the USB port.

 

 

   11.   For large computer systems, instead of finding a single hard drive installed within the system unit, you are most likely to find a(n) ____________________.

 

   12.   The ____________________ is the most common pointing device for a desktop computer.

 

 

   13.   OCR stands for ____________________.

 

 

   14.   ____________________ displays use a layer of gas between two plates of glass.

 

 

   15.   Most printers today are ____________________ printers, meaning they form images without the print mechanism actually touching the paper.

 

 

MATCHING

 

 

a.	portable app	g.	SSD
b.	CPU	h.	land
c.	fault tolerance	i.	drum
d.	ROM	j.	motherboard
e.	scanner	k.	VRAM
f.	bus	l.	control unit

 

 

     1.   part of a laser printer

 

     2.   nonvolatile chips that permanently store data or programs

 

     3.   captures an image of an object in digital form

 

     4.   directs the flow of traffic within the core

 

     5.   another term for flash memory drive

 

     6.   a computer program designed to be used with a device like a thumb drive

 

     7.   memory chips inside a video card

 

     8.   the main circuit board inside the system unit

 

     9.   the main processing device for a computer

 

   10.   increased using RAID

 

   11.   an area on an optical disc that remains unchanged after data is written

 

   12.   an electronic path over which data can travel

 

 

 

ESSAY

 

     1.   Name and describe the two types of bus standards explored in the chapter. Include the speeds of the various standards (original, current, and emerging).

 

 

     2.   Name and briefly describe the six main units within a CPU that were explored in the chapter.

 

 

     3.   What is RFID technology? What are its advantages and disadvantages?