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ITT Tech Tucson NT 1210 Chapter 1 1)Which of the following is true about 1 bit? a

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ITT Tech Tucson

NT 1210

Chapter 1

1)Which of the following is true about 1 bit? a. Can represent decimal values 0 through 9 b. Can be used to represent one character in the lowercase English alphabet c. Represents one binary digit d. Represents four binary digits

 

2.            Which of the following terms means approximately 106 bytes? a. Terabyte b. Megabyte c. Gigabyte d. Kilobyte

 

3.            Which answer lists the correct number of bits associated with each term? a. 8 bits per double word  b. 32 bits per word c. 64 bits per quadruple word d. 4 bits per byte

 

4.            Which of the following answers are true about random-access memory (RAM) as it is normally used inside a personal computer? (Choose two answers.)

a. Used for short-term memory b. Used for long-term memory c. Used to process data d. Connects to the CPU over a bus using a cable e. Is installed onto the motherboard

 

5.            This chapter describes the concepts behind how a CPU reads the contents from RAM. Which of the following is true about the process of read data, as described in the chapter? a. The CPU tells the RAM which address holds the data that the CPU wants to read. b. The CPU reads all RAM sequentially, beginning with the first byte, until it happens to read the byte that the CPU wanted to read. c. The smallest unit of data that RAM supplies back to the CPU is 1 bit. d. The CPU must first find the file in the file system before reading the data.

 

6.            A user has opened a word processor, typed the numbers 123456789, and stored the document as a file called report1. Which of the following deter- mines, in part, what bits the computer stores in the file to represent the text typed into the report? a. Keyboard map b. Pixel grid c. Character set  d. The binary equivalent of decimal 123456789

 

7.            A user has opened a calculator application, typed the numbers 123456789, and then done some math problem using this number. Which of the following determines, in part, what bits the computer stores in RAM to represent the number 123456789? a. Keyboard map b. Pixel grid

c. Character set d. The binary equivalent of decimal 123456789

 

8.            Which of the following is not a feature of a file system that might be used with a hard disk drive? a. An actuator arm b. A directory c. A file d. A place to keep directory information on the hard disk

 

9.            A student writes a report using a word processor, saving the report in a file called my_report. The student stores the file on his laptop hard disk drive. Later, he posts the file on a file-sharing site for a classmate to review the report. Then, he copies an updated version of the file to a flash drive to submit it to his instructor. Which of the following are some of the impor- tant features supplied by files as defined by a computer OS? (Choose three answers.)   a. Keeps data in order b. Provides a convenient way to name a set of data for easier operations like copying and moving c. Names give users an easy way to reference the data d. Gives the CPU an easy way to identify the data it wants to read from RAM

 

10.          You write some files to a flash drive and then share the drive with a classmate. That classmate opens an application that lists the contents (folders and files) of what is on the flash drive. The classmate sees all the files you had placed onto the flash drive. How does your classmate’s computer know what is on the flash drive? a. By reading the file system’s directory information, which is stored on the storage device b. By reading the file system’s directory information, which is automatically posted to a centralized online site c. By reading the files and autogenerating a directory structure for the files, for use on your classmate’s local computer

d. The flash drive’s contents will not be usable by the classmate

 

11.          Which of the following answers best describes how a hard disk drive physically writes a binary 0 or 1? a. Using an electrical charge b. Using a magnetic charge c. Changing the disk’s surface so that later the light will reflect differently for 0 or 1 d. Holding a sound wave in a vacuum

 

12.          Which of the following answers are true about an internal hard disk drive (HDD) as it is normally used inside a personal computer? (Choose two answers.) a. Used for short-term memory b. Used for long-term memory c. Used to process data d. Connects to the CPU over a bus using a cable e. Is installed onto the motherboard

 

13.          Which of the following are components of an internal hard disk drive (HDD)? (Choose two answers.) a. Actuator arm b. Laser c. Platters d. Sliding media tray

 

 

14.          Which of the following technologies are considered to be solid state? (Choose two answers.) a. RAM  b. Hard disk drive c. Optical disc drive d. USB flash drive

 

15.          A user has opened a word processor, typed the numbers 123456789, and looked at the number on the screen in the word processor window. The user sits and starts to daydream about how computers work, particularly about what happened from the time before she typed 123456789 until the number showed up on the screen. Which of the following answers lists the first item that the computer will need to consider? a. Keyboard map b. Pixel grid c. Character set d. The binary equivalent of decimal 123456789

 

 

16.          A user presses the a key on a computer keyboard. Which of the following answers best describes how a keyboard knows that the a key was pressed? a. By sound that travels through a vacuum in small pathways under the keyboard called keyboard channels b. By a change in the magnetic charge in a plate beneath that spot on an underlying metal plate c. Using a series of light (on/off) pulses, sent by each key, triggered when the user presses the key d. By closing an electrical circuit connected to the key when the key is pressed

 

17.          In a mechanical computer mouse, the mouse, computer, and display work together to move the mouse pointer across the screen. When the mouse signals the computer about how the user has moved the mouse, which of the following answers best describes what the mouse tells the CPU?   a. One dimension: movement as a single number and single direction on an X,Y graph. b. Two dimensions: movement as two numbers: one in the direction of the X axis of an X,Y graph and the other on the Y axis. c. Three dimensions: movement as three numbers: one each on the X, Y, and Z axes of an X,Y,Z graph. d. None of the other answers is even remotely close to what the mouse tells the CPU.

 

18.          Which of the following answers describes a feature in common between computer mice and computer keyboards? a. To store data b. Input of user data c. Input of commands that control the computer d. To output sound from the computer

 

 

19.          For a particular computer display, the screen resolution is set to 1280 x 1024. Which of the following is true about the term screen resolution, these two numbers, and what they describe? (Choose two answers.) a. 1280 is the number of items top to bottom in a grid on the screen. b. The screen resolution is the number of lighted dots per inch (DPI) currently in use on the screen. c. The screen is using more than 1 million pixels. d. 1024 is the number of items top to bottom in a grid on the screen.

 

20.          Which of the following might be a useful part of a pixel map? (Choose two answers.) a. Information that identifies each individual pixel on the computer display b. A binary code for each pixel, defining its color c. A table of text characters and a unique binary code for each d. A directory that lists all folders and files on a hard disk drive