11th class Computer Unit 5 MCQs
51. CPU provides enabling signal through:
a. Address bus
b. Data bus
c. Expansion bus
d. Control bus
52. How many bits are carried by one line of data bus?
a. 3
b. 1
c. 4
d. 2
53. Which bus allows the processor to communicate with peripheral devices?
a. Data bus
b. System bus
c. Control bus
d. Expansion bus
54. A set of electrical paths used to transfer data is called:
a. Monitor
b. Printer
c. Bus
d. Keyboard
55. Expansion cards are inserted into:
a. CPU
b. Slot
c. CBT
d. Plays
56. RAM Holds the data/instructions
a. Partially
b. Temporarily
c. Casually
d. Permanently
57. A data bus with 32 lines can transfer which data at a time:
a. 4 bytes
b. 32 bits
c. 32 bytes
d. Both A and C
58. Expansion slots connects interface cards to:
a. Mother board
b. Ports
c. System bus
d. Peripheral device
59. The program that contains the instructions to operate a device is called:
a. Device system
b. Device driver
c. Device operating system
d. Device operator
60. The idea of storing a program in memory was given by:
a. Dr. Abdul Salam
b. John Van Neumann
c. Pascal
d. Dr. Abdul Qadir
61. An identification location in memory where data are kept is called:
a. Location
b. Space
c. Cell
d. Address
62. The idea of stored program computer was given by:
a. John Van Newmann
b. Charles
c. Pascal
d. Leibniz
63. Which one of the following handles processor communications with peripherals?
a. I/O unit
b. ALU
c. Bus interconnection
d. CU
64. The hardware component that permanently holds data and programs is called:
a. Temporary storage
b. Primary storage
c. CPU
d. Secondary storage
65. CPU’s communication with peripheral devices are handled by:
a. Read only memory
b. Main memory
c. Control unit
d. Input output unit
66. CPU sends command signals through:
a. Address bus
b. Data bus
c. Expansion bus
d. Control bus
67. Which of the following memories allows simultaneous read and write operations?
a. EPROM
b. ROM
c. SROM
d. RAM
68. ROM stands for:
a. Random only memory
b. Recursive online memory
c. Read only memory
d. Rapid online memory
70. The difference between ROM and RAM is:
a. ROM is read only
b. ROM is larger
c. ROM is nonvolatile
d. B & C
71. Which of the following has the fastest speed?
a. ROM
b. Disk
c. Cache
d. RAM
72. Cache memory works between:
a. CPU and Hard Disk
b. CPU and RAM
c. MMU and Hard Disk
d. RAM and ROM
73. Memory consists of:
a. Cells
b. Set of wires
c. Ports
d. Set of circuits
74. Which of the following is not a type of memory?
a. ROM
b. DRAM
c. FRAM
d. SRAM
75. The memory cells are logically organized into group of:
a. 12bits
b. 8bits
c. 24bits
d. 5bits