Question 1

TV remotes and other devices that operate over short distances free of obstacles use _____ to send and receive information.

Accepted Answer

Infrared,also called IR or IrDA (infrared data association),uses red light to send and receive information.Infrared light has a frequency that's below what the eye can see.It is used for TV remotes and other devices that operate over short distances that are free of obstacles.

Question 2

Monte Carlo,Inc. ,wants to set up a luxury resort in a desert close to Cairo.With an eye on customer needs,it wants to ensure that all its guests can access the Internet from their rooms,the lobby,and the restaurants.Which of the following is Monte Carlo,Inc. ,most likely to use in its network environment?

Accepted Answer

WiFi (wireless fidelity)is a standard for transmitting information in the form of radio waves over distances up to 400 feet.WiFi has several forms.WiFi is usually the type of wireless communication used in a network environment.

Question 3

Which of the following magnetic storage devices consists of one or more thin metal platters sealed inside the computer?

Accepted Answer

Hard disk is a magnetic storage device with one or more thin metal platters or disks that store information sealed inside the disk drive.

Question 4

Simon is planning to buy an output device for his home that can scan,copy,fax,and print.Which of the following devices best satisfies Simon's requirement?

Accepted Answer

Multifunction printers scan,copy,and fax,as well as print.These devices are very popular in homes and small offices since they offer so many features all in one unit.Multifunction printers can be either inkjet or laser.

Question 5

While repairing a faulty CPU,Igor discovers that a sliver of quartz that beats at regular intervals in response to an electrical charge is damaged.Which of the following represents the damaged part of the CPU that Igor is repairing?

Accepted Answer

Every CPU has its own CPU clock,which is simply a sliver of quartz that beats at regular intervals in response to an electrical charge.

Question 6

_____ is an optical or laser disc whose information cannot be changed.

Accepted Answer

CD-ROM (compact disc-read-only memory)is an optical or laser disc whose information cannot be changed.A CD stores up to 800 Meg of information.

Question 7

xD Picture Cards,SD cards,and CF Cards are examples of which of the following?

Accepted Answer

A flash memory card consists of solid state memory chips laminated inside a small piece of plastic.SD (Secure Digital)cards are the most popular type of flash memory cards.Other examples are xD Picture Cards,Compact Flash (CF)Cards,and Memory Stick Media.

Question 8

Which of the following terms is used to identify the place on your system unit,monitor,or keyboard through which information and instructions flow to and from your computer system?

Accepted Answer

A port is the place on your system unit,monitor,or keyboard through which information and instructions flow to and from your computer system.For wired connections it is the opening or socket where you insert the connector,and for wireless devices a port is where the wave information goes in and out.

Question 9

Ludmilla is planning to buy a special type of CPU for her notebook computer that changes speed,and therefore power consumption,in response to fluctuation in use.She is looking for a ____.

Accepted Answer

A mobile CPU is a special type of CPU for a notebook computer that changes speed,and therefore power consumption,in response to fluctuation in use.

Question 10

Which of the following can be written to repeatedly?

Accepted Answer

DVD-RW is a high-capacity optical or laser disc on which you can save,change,and delete files.

Question 11

John wants to buy a printer that uses four colors: black,cyan,magenta,and yellow.Some of these printers,according to the salesman whom John approached,produce high-quality images and are often advertised as photo printers.These have two shades each of magenta and cyan for a total of six colors.Others include colors such as orange and red.John is planning to buy a(n)____.

Accepted Answer

Inkjet printers make images by forcing ink droplets through nozzles.Standard inkjet printers use four colors: black,cyan,magenta,and yellow.Some inkjet printers produce high-quality images and are often advertised as photo printers.These have two shades each of magenta and cyan for a total of six colors.Others include colors such as orange and red.

Question 12

What type of transmission does WiFi use?

Accepted Answer

WiFi (wireless fidelity)is a standard for transmitting information in the form of radio waves over distances up to 400 feet.

Question 13

Michael wants to wirelessly connect his cell phone to a computer.Which of the following can assist him in doing this?

Accepted Answer

Bluetooth is a standard for transmitting information in the form of short-range radio waves over distances of up to 30 feet and is used for purposes such as wirelessly connecting a cell phone or a PDA to a computer.

Question 14

Which of the following is a high-capacity optical or laser disc whose information cannot be changed and whose storage capacity varies according to its type?

Accepted Answer

a DVD-ROM is a high-capacity optical or laser disc whose information cannot be changed.The capacity of a DVD,unlike that of a CD,varies according to type.

Question 15

BioNext,a genomics research facility,uses scanners that are used to scan some human physical attributes like fingerprints or irises for security purposes.BioNext is using ____.

Accepted Answer

A biometric scanner scans some human physical attribute like your fingerprint or iris for security purposes.

Question 16

Anna finds out that the component of her computer's CPU that performs logic operations is not working.She logs a complaint with the assistance desk in her office requesting the service personnel to fix the ____.

Accepted Answer

The arithmetic logic unit (ALU)is a component of the CPU that performs arithmetic,as well as comparison and logic operations.

Question 17

The advantage of a(n)_____ technology is that it produces brighter,more efficient,and thinner displays than traditional LCDs.

Accepted Answer

The advantage of an OLED (organic light-emitting diode)technology is that it produces brighter,more efficient,and thinner displays than traditional LCDs.

Question 18

On investigating a technical fault in his computer,Max finds out that a temporary holding area of information is affected and needs to be changed.Max needs to change the _____ of his computer.

Accepted Answer

Random access memory (RAM)is a temporary holding area for the information you are working with as well as the system and application software instructions that the CPU currently needs.

Question 19

Which of the following allows you to connect as many as 127 devices to a single port on your computer?

Accepted Answer

USB (universal serial bus)port fits small flat plug-and-play,hot-swap USB connectors,and,using USB hubs,you can connect up to 127 devices to a single USB port on your computer.The newest type is USB 3.0 which has faster transfer rates than its predecessors.

Question 20

Which of the following creates the output by moving a pen across the surface of a piece of paper?

Accepted Answer

Plotters form their output by moving a pen across the surface of a piece of paper.Plotters were the first type of printer that could print with color and render graphics and full-size engineering drawings.

Quiz 10: Computer Hardware and Software