MCQOPTIONS
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MCQOPTIONS
This section includes 104 Mcqs, each offering curated multiple-choice questions to sharpen your Master of Science in Computer Science (M.Sc CS) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
For a given FINITE number of instructions to be executed, which architecture of the processor provides for a faster execution ? |
| A. | isa |
| B. | ansa |
| C. | super-scalar |
| D. | all of the above |
| Answer» D. all of the above | |
| 52. |
A processor performing fetch or decoding of different instruction during the execution of another instruction is called ______ . |
| A. | super-scaling |
| B. | pipe-lining |
| C. | parallel computation |
| D. | none of these |
| Answer» C. parallel computation | |
| 53. |
Two processors A and B have clock frequencies of 700 Mhz and 900 Mhz respectively. Suppose A can execute an instruction with an average of 3 steps and B can execute with an average of 5 steps. For the execution of the same instruction which processor is faster ? |
| A. | a |
| B. | b |
| C. | both take the same time |
| D. | insuffient information |
| Answer» B. b | |
| 54. |
During the execution of the instructions, a copy of the instructions is placed in the ______ . |
| A. | register |
| B. | ram |
| C. | system heap |
| D. | cache |
| Answer» E. | |
| 55. |
Which one of the following is a characteristic of CISC (Complex Instruction Set Computer) |
| A. | fixed format instructions |
| B. | variable format instructions |
| C. | instructions are executed by hardware |
| D. | none of the above |
| Answer» C. instructions are executed by hardware | |
| 56. |
In daisy-chaining priority method, all the devices that can request an interrupt are connected in |
| A. | parallel |
| B. | serial |
| C. | random |
| D. | none of the above |
| Answer» C. random | |
| 57. |
Characteristic of RISC (Reduced Instruction Set Computer) instruction set is |
| A. | three instructions per cycle |
| B. | two instructions per cycle |
| C. | one instruction per cycle |
| D. | none of the |
| Answer» D. none of the | |
| 58. |
An instruction to provide small delay in program |
| A. | lda |
| B. | nop |
| C. | bea |
| D. | none of the above |
| Answer» C. bea | |
| 59. |
The cost of a parallel processing is primarily determined by : |
| A. | time complexity |
| B. | switching complexity |
| C. | circuit complexity |
| D. | none of the above |
| Answer» D. none of the above | |
| 60. |
Which Algorithm is better choice for pipelining? |
| A. | small algorithm |
| B. | hash algorithm |
| C. | merge-sort algorithm |
| D. | quick-sort algorithm |
| Answer» D. quick-sort algorithm | |
| 61. |
The concept of pipelining is most effective in improving performance if the tasks being performed in different stages : |
| A. | require different amount of time |
| B. | require about the same amount of time |
| C. | require different amount of time with time difference between any two tasks being same |
| D. | require different amount with time difference between any two tasks being different |
| Answer» C. require different amount of time with time difference between any two tasks being same | |
| 62. |
Pipelining strategy is called implement |
| A. | instruction execution |
| B. | instruction prefetch |
| C. | instruction decoding |
| D. | instruction manipulation |
| Answer» C. instruction decoding | |
| 63. |
How many address lines are needed to address each memory location in a 2048X 4 memory chip? |
| A. | 10 |
| B. | 11 |
| C. | 8 |
| D. | 12 |
| Answer» C. 8 | |
| 64. |
The word size of the microprocessor refers to |
| A. | the amount of a information that can be stored in a byte |
| B. | the amount of a information that can be stored in a cycle |
| C. | the number of machine operations performed in a second |
| D. | the maximum length of an english word that can be input to a computer |
| Answer» C. the number of machine operations performed in a second | |
| 65. |
Instruction pipelining has minimum stages |
| A. | 4 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» C. 3 | |
| 66. |
The 16- bit registers in 8085 is |
| A. | general purpose register |
| B. | accumulator |
| C. | stack pointer and program counter |
| D. | all of the above |
| Answer» D. all of the above | |
| 67. |
In immediate addressing the operand is placed |
| A. | in the cpu register |
| B. | after opcode in the instruction |
| C. | in the memory |
| D. | in the stack |
| Answer» C. in the memory | |
| 68. |
Which major development led to the production of microcomputers? |
| A. | magnetic disks |
| B. | floppy disks |
| C. | logic gates |
| D. | integrated circuits |
| Answer» E. | |
| 69. |
Which of the following require large computer memory? |
| A. | imaging |
| B. | graphics |
| C. | voice |
| D. | all of the above |
| Answer» E. | |
| 70. |
CD -RAW is |
| A. | input device only |
| B. | output device only |
| C. | both of the above |
| D. | none of the above |
| Answer» C. both of the above | |
| 71. |
To provide increased memory capacity for operating system, the |
| A. | virtual memory is created |
| B. | cache memory is increased |
| C. | memory for os is reserved |
| D. | additional memory is installed |
| Answer» B. cache memory is increased | |
| 72. |
Which of the following bus is used to transfer data from main memory to peripheral device? |
| A. | dma bus |
| B. | output bus |
| C. | data bus |
| D. | all of the above |
| Answer» D. all of the above | |
| 73. |
How many bits do you think will be adequate to encode individual character in Devnagari script |
| A. | 12 |
| B. | 16 |
| C. | 64 |
| D. | 10 |
| Answer» E. | |
| 74. |
A peripheral is |
| A. | any drives installed in the computer |
| B. | tapedrive connected to a computer |
| C. | any physical device connected to the computer |
| D. | none of above |
| Answer» D. none of above | |
| 75. |
Which of the following memories in a computer is volatile? |
| A. | ram |
| B. | rom |
| C. | eprom |
| D. | all |
| Answer» B. rom | |
| 76. |
In a system with a 16 bit address bus, what is the maximum number of 1K byte memory devices it could contain |
| A. | 16 |
| B. | 64 |
| C. | 256 |
| D. | 65536 |
| Answer» D. 65536 | |
| 77. |
The maximum integer which can be stored on a 8 bit accumulator is |
| A. | 112 |
| B. | 200 |
| C. | 255 |
| D. | 224 |
| Answer» D. 224 | |
| 78. |
A modem is used to link up two computers via |
| A. | telephone line |
| B. | dedicated line |
| C. | both of the above |
| D. | none of the above |
| Answer» D. none of the above | |
| 79. |
Intel Pentium CPU is a |
| A. | risc based |
| B. | cisc based |
| C. | both of the above |
| D. | none of the above |
| Answer» B. cisc based | |
| 80. |
Dynamic RAMs are best suited to |
| A. | slow system |
| B. | large system |
| C. | one bit system |
| D. | none of the above |
| Answer» B. large system | |
| 81. |
Intel 8080 microprocessor has an instruction set of 91 instruction. The opcode to implement this instruction set should be at least |
| A. | 3 bit long |
| B. | 5 bit long |
| C. | 7 bit long |
| D. | 9 bit long |
| Answer» D. 9 bit long | |
| 82. |
Te devices connected to a microprocessor can use the data bus: |
| A. | all the time |
| B. | at regular interval of time |
| C. | only when it’s sending or receiving data |
| D. | when the microprocessor is reset |
| Answer» D. when the microprocessor is reset | |
| 83. |
Which of the following is true about interrupts? |
| A. | they are generated when memory cycles are stolen |
| B. | they are used in place of data channels |
| C. | they can be generated by arithmetic operation |
| D. | they can indicate completion of an i/o operation |
| Answer» B. they are used in place of data channels | |
| 84. |
The advantage of RISC processor over CISC processor is that |
| A. | the hardware architecture is simpler |
| B. | an instruction can be executed in one cycle |
| C. | less number of registers accommodate in chip |
| D. | parallel execution capabilities |
| Answer» C. less number of registers accommodate in chip | |
| 85. |
For a RS flip-flop constructed with NAND gates and input R=1 and s=1 the state is |
| A. | memory state |
| B. | set state |
| C. | reset state |
| D. | unused state |
| Answer» E. | |
| 86. |
What is the minimum number of flip-flops required in a counter to count 100 pulses? |
| A. | five |
| B. | seven |
| C. | ten |
| D. | hundred |
| Answer» C. ten | |
| 87. |
Which one of the following is most suitable to make a parity checker |
| A. | and gate |
| B. | or gate |
| C. | exclusive- or gate |
| D. | none of the above |
| Answer» D. none of the above | |
| 88. |
The output of a gate is low when at least one of its input is low . It is true for |
| A. | and gate |
| B. | or gate |
| C. | nand gate |
| D. | nor gate |
| Answer» B. or gate | |
| 89. |
Memory access in RISC architecture is limited to instructions |
| A. | call and ret |
| B. | push and pop |
| C. | sta and lda |
| D. | mov and jmp |
| Answer» D. mov and jmp | |
| 90. |
From where interrupts are generated? |
| A. | central processing unit |
| B. | memory chips |
| C. | registers |
| D. | i/o devices |
| Answer» E. | |
| 91. |
Interrupts which are initiated by an instruction are |
| A. | internal |
| B. | external |
| C. | hardware |
| D. | software |
| Answer» C. hardware | |
| 92. |
A microprogram written as string of 0's and 1's is a |
| A. | symbolic microinstruction |
| B. | binary microinstruction |
| C. | symbolic microprogram |
| D. | binary microprogram |
| Answer» E. | |
| 93. |
When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the |
| A. | stack pointer |
| B. | accumulator |
| C. | program counter |
| D. | stack |
| Answer» E. | |
| 94. |
Which of the following code is used in present day computing was developed by IBM corporation? |
| A. | ascii |
| B. | hollerith code |
| C. | baudot code |
| D. | ebcdic code |
| Answer» E. | |
| 95. |
What is the control unit's function in the CPU? |
| A. | to transfer data to primary storage |
| B. | to store program instruction |
| C. | to perform logic operations |
| D. | to decode program instruction |
| Answer» E. | |
| 96. |
Processors of all computers, whether micro, mini or mainframe must have |
| A. | alu |
| B. | primary storage |
| C. | control unit |
| D. | all of above |
| Answer» E. | |
| 97. |
A microprogram written as string of 0's and 1's is a ............. |
| A. | symbolic microinstruction |
| B. | binary microinstruction |
| C. | symbolic microinstruction |
| D. | binary micro-program |
| Answer» E. | |
| 98. |
Memory address refers to the successive memory words and the machine is called as ............ |
| A. | word addressable |
| B. | byte addressable |
| C. | bit addressable |
| D. | terra byte addressable |
| Answer» B. byte addressable | |
| 99. |
The access time of memory is ............... the time required for performing any single CPU operation. |
| A. | longer than |
| B. | shorter than |
| C. | negligible than |
| D. | same as |
| Answer» B. shorter than | |
| 100. |
CPU does not perform the operation .................. |
| A. | data transfer |
| B. | logic operation |
| C. | arithmetic operation |
| D. | all of the above |
| Answer» B. logic operation | |