Chapter 03 : Computer Hardware Solution

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Chapter 03 : Computer Hardware Solution

True / False Questions

  1. All computers are systems of input, processing, output, storage, and distribution components.

True    False

  1. The first electronic digital computer was completed in the 1960s.

True    False

  1. Personal computers, network servers, and technical workstations are terms used to highlight major uses of particular types of computers.

True    False

  1. Experts predict the merging or disappearance of several computer categories. For example, many midrange and mainframe systems have been made obsolete by the power and versatility of client/server networks composed of microcomputers and servers.

True    False

  1. Network servers are the most important category of computer systems for both businesspeople and individual consumers.

True    False

  1. The computing power of microcomputers currently exceeds that of the mainframe computer of previous generations, at a fraction of the cost.

True    False

  1. Some microcomputers are powerful enough to support applications with heavy mathematical computing and graphics display demands, such as computer-aided design (CAD) or investment analysis.

True    False

  1. Network servers are some of the less powerful microcomputers; they are used to coordinate telecommunications and resource sharing in small LANs and in Internet and intranet websites.

True    False

  1. The top criteria for corporate PC ownership are operating system ready, connectivity, solid performance, and global compatibility.

True    False

  1. Today’s corporate buyers seek networked PCs equipped with reliable wireless capabilities.

True    False

  1. Web-enabled personal digital assistants use touch screens, pen-based handwriting recognition, or keyboards, so mobile workers can send and receive e-mail, access the Web, and exchange information with their desktop PCs or Web servers.

True    False

  1. Midrange computers are often used as network servers in order to help manage large Internet websites, corporate intranets and extranets, and client/server networks.

True    False

  1. Microcomputers can act as powerful workstations for computer-aided design and other computation and graphics-intensive applications.

True    False

  1. A RIM Blackberry combines a mobile phone, a music and video player, and an Internet communications device.

True    False

  1. The function of an input device is to interpret computer program instructions and to transmit directions to the other components of the computer system.

True    False

  1. The central processing unit (CPU) is the main processing component of a computer system.

True    False

  1. The output devices of a computer system can include video display units, scanners, and printers.

True    False

  1. The control unit of the CPU interprets instructions and directs processing.

True    False

  1. The clock speed of a microprocessor today is commonly expressed in teraflops; earlier microcomputer speeds were reported in gigahertz.

True    False

  1. Moore’s Law refers to the exponential growth in the number of transistors per integrated circuit, which quadruples computer power every six months.

True    False

  1. When discussing the concept of a computer system, peripherals is the generic name given to all input, output, and secondary storage devices that are part of a computer system.

True    False

 

  1. Peripherals depend on direct connections or telecommunications links to the central processing unit of a computer system.

True    False

  1. Offline devices are separate from, but can be electronically connected to and controlled by, a CPU.

True    False

  1. A pointing stick is the most popular pointing device used today.

True    False

  1. A trackball is a type of pointing device that converts drawings and other graphic images into digital data in order to enter it into a computer system.

True    False

  1. Some touch screens emit a grid of infrared beams or sound waves that is broken when the screen is touched.

True    False

  1. Pen-based computing technologies are being used in many hand-held computers and personal digital assistants.

True    False

  1. Speech recognition systems typically require training the computer to recognize your voice and its unique sound patterns in order to achieve a high degree of accuracy.

True    False

  1. Speaker independent voice recognition systems allow a computer to understand a few words from a voice it has never heard before.

True    False

  1. Optical scanning enables the direct entry of data from source documents into a computer system.

True    False

  1. OCR technology is used to read codes on merchandise tags, product labels, credit card receipts, and other documents.

True    False

  1. The dark, magnetic stripe on the back of credit cards can hold about 200 gigabytes of information.

True    False

 

  1. Smart cards, a form of input technology that contains an embedded microprocessor chip, are becoming popular in the United States for use in debit and credit cards.

True    False

  1. Digital cameras and digital video cameras enable users to shoot, store, and download still photos or full-motion video and audio onto their PCs.

True    False

  1. Video displays and printed documents have been, and still are, the most common forms of output from computer systems.

True    False

  1. Advances in video monitor technology, such as active matrix and dualscan capabilities, have improved the color, but not the clarity, of LCD displays.

True    False

  1. Printing information on paper is the most common form of information output.

True    False

  1. One of the major trends in secondary storage has been toward massive capacities using magnetic and optical media.

True    False

  1. High speed storage media cost less per byte and provide higher capacities than lower-speed storage media.

True    False

  1. Data are processed and stored in a computer system through the presence or absence or electronic or magnetic signals to the computer. This is called a “bi-state” representation of data, because the computer and the media can exhibit only two states or conditions.

True    False

  1. A byte typically consists of ten bits and represents one character of data in most computer coding schemes.

True    False

  1. Magnetic tape devices are frequently called direct access storage devices (DASDs), while magnetic disks are known as sequential access devices.

True    False

  1. The terms direct access and random-access describe the same concept.

True    False

 

  1. The primary storage (main memory) of a computer consists of microelectronic semiconductor memory chips.

True    False

  1. Random Access Memory (RAM) is non-volatile memory.

True    False

  1. ROM chips are widely used as a primary storage medium because they can be erased and overwritten.

True    False

  1. Magnetic disks are common forms of secondary storage because they provide fast access and high storage capacity at a reasonable cost.

True    False

  1. RAID disk units provide fault tolerant storage capacity because data can be recovered from backup copies stored on other disks should one disk fail.

True    False

  1. Magnetic tapes are no longer used by businesses today because the cost of storage on tape is very expensive compared to other types of storage media.

True    False

  1. Most CD-ROM disks can hold more than 600 megabytes of information.

True    False

  1. The main advantage of CD-R (compact disk-recordable) disks is that they enable recorded data to be erased many times.

True    False

  1. DVD+RW+R with CD-RW provides an all-in-one drive for burning DVD-RW or DVD-R disks, burning CDs, and reading DVDs and CDs.

True    False

  1. Active RFID chips are self-powered and must be close to the reader to transmit their signal.

True    False

  1. RFID chips may be attached to objects, but cannot be injected into them because it interferes with radio signal transmission.

True    False

  1. The use of RFID technology poses concerns for privacy issues.

True    False

  1. It is predicted that in the future we will be able to back up our biological memories.

True    False

Multiple Choice Questions

  1. Computer systems rely on all the following components except _______________.
  2. input
  3. internet
  4. processing
  5. storage
  6. Computer systems rely on which of the following components?
  7. Input, processing, output, storage, and control
  8. Input, processing, output, storage, and the Internet
  9. The Internet, processing, output, storage, and control
  10. Input, processing, output, the Internet, and control
  11. The mechanical loom was invented by _______________.
  12. Blaise Pascal
  13. Joseph Jacquard
  14. Herman Hollerith
  15. Keith Glennan
  16. The first generation of computers relied on _______________.
  17. miniaturized circuits
  18. transistors
  19. vacuum tubes
  20. punch cards
  21. The second generation of computers relied on _______________.
  22. miniaturized circuits
  23. transistors
  24. vacuum tubes
  25. punch cards
  26. In the 1950s, _______________ were invented and quickly replaced the thousands of vacuum tubes used in electronic computers.
  27. microchips
  28. resistors
  29. transistors
  30. miniaturized circuits
  31. The third generation of computers relied on _______________.
  32. solid state technology and integrated circuits
  33. transistors
  34. vacuum tubes
  35. punch cards
  36. The first electronic digital computer was completed in the _______________.
  37. 1870s
  38. 1940s
  39. 1950s
  40. 1960s
  41. The _______________ generation of computers was characterized by further miniaturization of circuits, increased multiprogramming, and virtual storage memory.
  42. second
  43. third
  44. fourth
  45. fifth
  46. _______________ are the most important category of computer systems for both businesspeople and individual consumers.
  47. Microcomputers
  48. Supercomputers
  49. Network Servers
  50. Mainframes
  51. According to the text, which of the following is considered by millions of computer users to be the primary function of the desktop PC?
  52. Allows access to the Internet
  53. Increases productivity through the use of software applications
  54. Facilitates creation of local area networks
  55. All of the choices are correct
  56. Which of the following statements best describes a workstation computer?
  57. Supports applications with heavy mathematical computing and graphics display demands, such as computer-aided design (CAD)
  58. Coordinates telecommunications and resource sharing in small, local area networks (LANS)
  59. Allows convenient mobile communications and touch-screen computing
  60. All of the choices are correct.
  61. __________ are some of the more powerful microcomputers; they are used to coordinate telecommunications and resource sharing in small LANs and in Internet and intranet websites.
  62. Mainframes
  63. Supercomputers
  64. Network Servers
  65. None of the choices are correct.
  66. According to the text, using web-enabled PDAs allows workers to realize all the following benefits except:
  67. Send and receive email
  68. Access the Web
  69. Exchange information with desktop PCs or Web servers
  70. Helps retain younger and more technologically savvy employees
  71. An intelligent terminal that can perform data entry and some information processing tasks independently is called a _______________ terminal.
  72. transaction
  73. dumb
  74. Windows
  75. remote
  76. Which of the following does not apply to a personal digital assistant (PDA)?
  77. Supports applications with heavy mathematical computing
  78. Touchscreens
  79. Pen-based handwriting recognition
  80. Web access
  81. Personal digital assistants most commonly use which of these technologies?
  82. Pen-based computing
  83. Optical scanning
  84. Jump drives
  85. Back-lit keyboards
  86. What sets the RIM BlackBerry apart from other wireless PDA solutions?
  87. Lower price
  88. It is always on and connected
  89. Smaller size and weight
  90. Longer battery life
  91. A BlackBerry ____________________.
  92. performs common PDA functions
  93. doesn’t have a visible antenna
  94. uses the same network as most mobile phones
  95. All of the choices are correct.
  96. _______________ are high-end network servers that handle large-scale processing of business applications.
  97. Midrange computers
  98. Mainframes
  99. Supercomputers
  100. All of the choices are correct.
  101. _______________ are popular as powerful network servers to help manage large Internet Websites, intranets, and extranets.
  102. Workstations
  103. Minicomputers
  104. Supercomputers
  105. Mainframes
  106. Which of the following is a common application for a midrange computer?
  107. Internet functions.
  108. Integrated enterprise-wide manufacturing and distribution.
  109. Financial applications.
  110. All of the choices are correct.
  111. According to the text, which of the following is not true of Mainframes?
  112. Mainframes can process thousands of million instructions per second (MIPS).
  113. Mainframes are large, fast, and powerful.
  114. Mainframes have large storage capacities.
  115. All of the choices are correct.
  116. Which of the following would not be considered a characteristic of supercomputer systems?
  117. Costs between $5 million and $50 million.
  118. Used for global weather reports and military defense.
  119. Runs the same software found on most home computers, but at faster speeds
  120. Designed specifically for high-speed numeric computation
  121. The function of an input device is:
  122. to interpret computer program instructions
  123. to transmit directions to other components of the computer system
  124. to convert data into electronic form for entry into a computer system
  125. none of the above
  126. The central processing unit (CPU):
  127. is the main processing component of a computer system
  128. controls all the peripheral devices of a computer system
  129. is controlled by the RAID unit
  130. is also called a Fuzzy Logic unit
  131. The output devices of a computer system include:
  132. printers and video displays
  133. the Arithmetic-logic unit
  134. scanners and RAID units
  135. the Fuzzy Logic unit

 

 

  1. The central processing unit (CPU) consists of:
  2. the Control unit and the RAID unit
  3. Arithmetic-logic unit and the RAID unit
  4. the RAID unit and the Fuzzy Logic unit
  5. the Control unit and the Arithmetic-logic unit
  6. Which of the following would perform the required mathematical and logic operations of a central processing unit (CPU)?
  7. Control unit
  8. Arithmetic-logic unit
  9. RAID unit
  10. Fuzzy logic unit
  11. The function of an output device is to:
  12. Convert data into an electronic machine-readable form for direct entry into a computer system
  13. Perform the arithmetic and logic functions required in computer processing
  14. Convert electronic information produced by the computer system into human-intelligible form for presentation to end-users
  15. Store the data and program instructions needed for processing
  16. Which of the following is a secondary storage device?
  17. Primary memory
  18. Random access memory
  19. Magnetic disk
  20. The CPU
  21. According to Moore’s Law, _______________ doubles every 18 to 24 months.
  22. computing power
  23. computer prices
  24. computer storage capacity
  25. the number of functioning computers
  26. Which of the following would not fit the typical classification of a computer peripheral?
  27. Monitors and printers
  28. Scanners and hard disk drives
  29. CD-ROM drives and backup systems
  30. Central processing unit
  31. Offline devices:
  32. are directly attached to the CPU
  33. are not controlled by the CPU
  34. are controlled by the CPU
  35. can replace the CPU

 

  1. The most popular pointing device used today is the _______________.
  2. pointing stick
  3. light pen
  4. trackball
  5. electronic mouse
  6. All of the following relate to Peripherals except:
  7. input devices
  8. output devices
  9. CPU devices
  10. secondary storage devices
  11. One device used as an input device in a computer system is a pointing stick, which is best described as:
  12. A small gearshift lever set in a box
  13. A stationary device containing a roller ball whose top is exposed outside its case
  14. A pen-shaped device with a ballpoint at the end
  15. A small, button-like device, sometimes likened to the eraser head of a pencil
  16. A touchpad is best described as a:
  17. Small, rectangular, touch-sensitive surface usually placed below the keyboard
  18. Stationary device containing a roller ball whose top is exposed outside its case
  19. Pen-shaped device with a ballpoint at the end
  20. Device rolled along the desktop in order to move the cursor on the screen
  21. Continuous speech recognition systems:
  22. Compare speech patterns to a dictionary
  23. Allow a computer to understand a few words from a voice it has never heard before
  24. Require users to pause between each spoken word
  25. Recognize conversationally paced speech
  26. Speech recognition devices in work situations allow operators to perform all the following except:
  27. Enter data without using their hands.
  28. Input data faster.
  29. input data more accurately.
  30. Input data without using a computer.
  31. Speaker independent voice recognition systems:
  32. Compare speech patterns to a dictionary
  33. Allow a computer to understand a few words from a voice it has never heard before
  34. Require users to pause between each spoken word
  35. All of the choices are correct.

 

  1. Which of the following best describes optical scanning devices?
  2. Hand-held wands used to read data on merchandise tags
  3. Photoelectric devices that scan data
  4. Converts reflected light patterns into electronic impulses, which are accepted as input into the computer system
  5. All of the choices are correct.
  6. Which of the following best describes magnetic stripe technology?
  7. A form of data entry that helps computers read credit cards
  8. A form of computing where debit and credit cards have an embedded microprocessor chip
  9. Technology that enables users to download full-motion video into a computer system
  10. Technology commonly used in banks in order to magnetically read checks and deposit slips
  11. The dark, magnetic stripe on the back of credit cards can hold about _______________ of information.
  12. 200 gigabytes
  13. 200 kilobytes
  14. 200 bytes
  15. Immaterial, as this technology is not yet available in the United States
  16. Smart card technology:
  17. Allows debit cards to store a cash balance on a card and electronically transfer some of it to others to pay for items and services
  18. Is not yet available in the United States
  19. Is commonly used by banks to read and process checks
  20. All of the choices are correct.
  21. Banks use _______________ technologies for check processing.
  22. voice response
  23. magnetic ink character recognition
  24. laser printer
  25. optical scanner
  26. The most common output trend is _______________.
  27. printed reports and documents
  28. audio responses
  29. voice responses
  30. video displays
  31. Which of the following is not a valid storage medium?
  32. Paper documents
  33. Optical disks
  34. Magnetic tape
  35. All of the choices are valid storage media.
  36. High speed storage media _______________ than lower-speed storage media.
  37. cost less per byte and provide higher capacities
  38. cost less per byte and provide lower capacities
  39. cost more per byte and provide higher capacities
  40. cost more per byte and provide lower capacities
  41. _______________ bytes of storage are needed to represent the name “Sarah.”
  42. Two
  43. Three
  44. Five
  45. Ten
  46. Data are processed and stored in a computer system through the presence or absence of electronic or magnetic signals to the computer. This is called a _______________ representation of data, because the computer and the media can exhibit only two states or conditions.
  47. Ternary
  48. Trinary
  49. Binary
  50. Bipolar
  51. Data are processed and stored in a computer system through the presence or absence of electronic or magnetic signals to the computer. This is called a “binary” representation of data, because the computer and the media can exhibit only _______________ states or conditions.
  52. two
  53. three
  54. five
  55. ten
  56. A bit, the smallest element of data, can have values of:
  57. 0 or 1
  58. 0, 1, or 8
  59. 0 through 7
  60. 0 through 8
  61. A gigabyte (GB) is used to express which of the following approximate measures?
  62. 1,000 byes of storage
  63. 1,000,000 bytes of storage
  64. 1,000,000,000 bytes of storage
  65. 1,000,000,000,000 bytes of storage
  66. Which of the following is an advantage of RAID?
  67. It provides virtually unlimited online storage
  68. It provides high access speeds
  69. It provides fault-tolerant storage capacity
  70. All of the choices are advantages.
  71. The primary storage (main memory) of a computer is also called:
  72. ROM
  73. RAID
  74. RAM
  75. None of the choices are correct.
  76. Which of the following storage types is volatile?
  77. RAM
  78. ROM
  79. PROM
  80. All the choices are volatile.
  81. Which of the following applies best to CD-RW optical disk technology?
  82. Users are unable to record their own data on the disks
  83. Users can record their own data, but only once
  84. Users are able to record and then erase the disks
  85. None of the choices are correct.
  86. Which of the following statements about optical disks is true?
  87. They can be read only, recordable, or rewritable
  88. They can hold approximately 50 megabytes on a single disk
  89. They have totally replaced “3.5” diskettes
  90. They have totally replaced magnetic tape as secondary storage
  91. According to the text, what are the current types of RFID chips?
  92. Electrical and magnetic
  93. Positive and negative
  94. Active and passive
  95. Red and Green

 

 

 

 


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