Chapter 5 Computer Organization
Knowledge point:
5.1. three subsystems that make up a computer
5.2. functionality of each subsystem
5.3. memory addressing and calculating the number of bytes
5.4. addressing system for input/output devices.
5.5. the systems used to connect different components together.
Multiple-choice Questions
39. The ___ is a computer subsystem that performs operations on data.( Knowledge
point 5.1)
a. CPU
b. memory
c. I/O hardware
d. none of the above
40. ____ is a stand-alone storage location that holds data temporarily. ( Knowledge
point 5.1)
a. An ALU
b. A register
c. A control unit
d. A tape drive
41. ____ is a unit that can add two inputs. ( Knowledge point 5.2)
a. An ALU
b. A register
c. A control unit
d. A tape drive
42. A register in a CPU can hold ____.( Knowledge point 5.2)
a. data
b. instructions
c. program counter values
d.all of the above
43. A control unit with five wires can define up to ____ operations. ( Knowledge
point 5.2)
a. 5
b. 10
c. 16
d. 32
44. A word is ____ bits. ( Knowledge point 5.3)
a. 8
b. 16 c. 32
d. any of the above
45. If the memory address space is 16 MB and the word size is 8 bits, then ____ bits
are needed to access each word. ( Knowledge point 5.3)
a. 8
b. 16
c. 24
d.32
46. The data in ____ are erased if the computer is powered down. ( Knowledge point
5.5.3)
a. RAM
b. ROM
c. a tape drive
d. a CD-ROM
47. ____ is a memory type with capacitors that need to be refreshed periodically.
( Knowledge point 5.3)
a. SRAM
b. DRAM
c. ROM
d. all of the above
48. ____ is a memory type with traditional flip-flop gates to hold data. ( Knowledge
point 5.3)
a. SRAM
b. DRAM
c. ROM
d. all of the above
49. There are ____ bytes in 16 terabytes. ( Knowledge point 5.3)
a.
b.
c.
d.
50. ____ can be programmed and erased using electronic impulses but can remain in
a computer during erasure. ( Knowledge point 5.3)
a. ROM
b. PROM
c. EPROM
d. EEPROM
51. ____ is a type of memory in which the user, not the manufacturer, stores
programs that cannot be overwritten. ( Knowledge point 5.3)
a. ROM b. PROM
c. EPROM
d. EEPROM
52. CPU registers should have ____ speed memory. ( Knowledge point 5.3)
a. high
b. medium
c. low
d. any of the above
53. Main memory in a computer usually consists of large amounts of ____ speed
memory. ( Knowledge point 5.3)
a. high
b. medium
c. low
d. any of the above
54. The ____ memory contains a copy of a portion of main memory. ( Knowledge
point 5.3)
a. CPU
b. cache
c. main
d. ROM
55. The ____ is nonstorage I/O device. ( Knowledge point 5.4)
a. keyword
b. monitor
c. printer
d. all of the above
56.A ____ is an optical storage device. ( Knowledge point 5.4)
a. CD-ROM
b. CD-R
c. CD-RM
d. all of the above
57. The ____ is a storage device in which the manufacturer writes information to the
disc. ( Knowledge point 5.4)
a. CD-ROM
b. CD-R
c. CD-RM
d. all of the above
58. The ____ is a storage device in which the user can writes information only once
to the disc. ( Knowledge point 5.4)
a. CD-ROM
b. CD-R
c. CD-RM
d. all of the above
59. The ____ is a storage device that can undergo multiple writings and erasings.
( Knowledge point 5.4) a. CD-ROM
b. CD-R
c. CD-RM
d. all of the above
60. The smallest storage area on a magnetic disk that can be accessed at one time is
a ____.( Knowledge point 5.4)
a. track
b. sector
c. frame
d. head
61. For a magnetic disk, the ____ time is the time it takes for the read/write head to
move to the desired track where the data are stored. ( Knowledge point 5.4)
a. rotation
b. seek
c. transfer
d. location
62. Polycarbonate resin is used in ____ . ( Knowledge point 5.4)
a. CD-ROMs
b. CD-Rs
c. CD-RWs
d. all of the above
63. In a ____, a high-power laser beam simulates pits in an alloy of silver, indium,
antimony, and tellurium. ( Knowledge point 5.4)
a. CD-ROM
b. CD-R
c. CD-RM
d. all of the above
64. In a ____, a high-power laser beam simulates pits in the dye layer. ( Knowledge
point 5.4)
a. CD-ROM
b. CD-R
c. CD-RM
d. all of the above
65. Which optical storage device has the highest capacity ? ( Knowledge point 5.4)
a. CD-ROM
b. CD-R
c. CD-RM
d. DVD
66. In a DVD, a ____ beam reads the disk. ( Knowledge point 5.4)
a. high-power laser
b. infrared
c. red laser
d. blue laser
67. A ____ bus connects the CPU and memory. ( Knowledge point 5.5)
