MCQOPTIONS
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MCQOPTIONS
This section includes 202 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
when we move from the outermost track to the innermost track in a magnetic disk, then density (bits per linear inch) |
| A. | increases |
| B. | decreases |
| C. | remains the same |
| D. | either remains constant or decreases |
| Answer» B. decreases | |
| 52. |
The number of bits that are typically stored on each track of magnetic disk is usually |
| A. | the same |
| B. | diffrent |
| C. | depend on the program to be stored |
| D. | fifty |
| Answer» E. | |
| 53. |
In magnetic disks, data is organized on the plotter in a concentric sets or rings called |
| A. | sector |
| B. | track |
| C. | head |
| D. | block |
| Answer» D. block | |
| 54. |
The number of records contained within a block of data on magnetic taps is defined by the |
| A. | block definition |
| B. | record contain clause |
| C. | blocking factor |
| D. | record per block factor |
| Answer» D. record per block factor | |
| 55. |
In comparison to the internal (main) memory, tape or disk memory is |
| A. | slower and more expensive |
| B. | slower and less expensive |
| C. | faster and more expensive |
| D. | faster and less expensive |
| Answer» D. faster and less expensive | |
| 56. |
The process of entering data into a storage location |
| A. | causes variation in its address number |
| B. | adds to the contents of the location |
| C. | is caused a readout operation |
| D. | is destructive of previous contents |
| Answer» D. is destructive of previous contents | |
| 57. |
The parallel operation is perferred because |
| A. | circuitry is simple |
| B. | it requires less memory |
| C. | it is faster than series operation |
| D. | all of these |
| Answer» D. all of these | |
| 58. |
The use of hardware i Memory management is through segment relocation and protection is |
| A. | to perform address translation to reduce size of the memory |
| B. | to perform address translation to reduce execution time overhead |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» D. None of these | |
| 59. |
When we move from the outermost track to the innermost tracks in a magnetic disk , then density (bits per linear inch) |
| A. | increases |
| B. | decreases |
| C. | remains the same |
| D. | either remains constant or decreases |
| Answer» B. decreases | |
| 60. |
How many wires are threaded through the cores in a coincident-current core memory? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» B. 3 | |
| 61. |
How many types of storage loops exist in magnetic bubble memory? |
| A. | 8 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» D. 2 | |
| 62. |
In a 8085 microprocessor system with memory mapped I/O |
| A. | I/o devices have 8-bit addresses |
| B. | I/O devices are accessed uusing IN and OUT instructions |
| C. | there can be a maximum of 256 input devices and 256 output devices |
| D. | arithmetic and logic operations can be directly perfomed with the I/O data. |
| Answer» E. | |
| 63. |
Which of the following statements is true? |
| A. | ROM is a Read/Write memory |
| B. | PC points to the last instruction that was executed |
| C. | Stack works on the principle of LIFO |
| D. | All instructions affect the flags. |
| Answer» D. All instructions affect the flags. | |
| 64. |
Each cell of a station Random Access memory contains |
| A. | 6 MOS transistors |
| B. | 4 MOS transistors and 2 capacitors |
| C. | Two 2- input NORs and One X-NOR gate |
| D. | XOR gates and shift registers. |
| Answer» B. 4 MOS transistors and 2 capacitors | |
| 65. |
Which of the following are typical characteristics of a RISC machine? |
| A. | Highly pipelined |
| B. | Multiple register sets |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» D. None of these | |
| 66. |
A micro-programmed control unit |
| A. | is faster than a hard- wired control unit |
| B. | facilitates easy implementation of new instructions |
| C. | is usefull when very small program s are to be run |
| D. | usually refers to the control unit of a microprocessor |
| Answer» C. is usefull when very small program s are to be run | |
| 67. |
Performance of a pipelined processor suffer if |
| A. | the pipeline stages have diffrent delays |
| B. | consecutive instructions are dependent on each other |
| C. | the pipeline stages share hardware resources |
| D. | all of these |
| Answer» E. | |
| 68. |
Comparing the time T1 taken for a single instruction on a pipelined CPU with time T2 taken on a non-pipelined but idential CPU, we can say that |
| A. | T1 = T2 |
| B. | T1 > T2 |
| C. | T1 < T2 |
| D. | T1 IS T2 plus time taken for one instruction ftech cycke |
| Answer» B. T1 > T2 | |
| 69. |
Ther main diffrence (a) between a CISC and a RISC processor is/are that a RISC processor typically |
| A. | has fewer instructions and addressing modes |
| B. | has more registers |
| C. | is easier to implement using hard-wired control logic |
| D. | all of these |
| Answer» E. | |
| 70. |
Property of locality of refrences may fail, if a program has. |
| A. | many conditional jumps |
| B. | many unconditional jumps |
| C. | many operands |
| D. | all of these |
| Answer» D. all of these | |
| 71. |
The idea of cache memory is based on |
| A. | the property of locality of reference |
| B. | the heuristic 90-10 rule |
| C. | the fact that only a small portion of a program is referenced relatively frequently |
| D. | all of these |
| Answer» B. the heuristic 90-10 rule | |
| 72. |
Each cell of a statio Random Access memory contains |
| A. | 6 MOS transistors |
| B. | 4 MOS transistors and 2 capacitors |
| C. | Two 2-input NORs and One X-NOR gate |
| D. | XOR gates and shift registers |
| Answer» B. 4 MOS transistors and 2 capacitors | |
| 73. |
Four memory clips of 16x 4 size have their address bases connected together. The system will be of size |
| A. | 64 x 64 |
| B. | 16 x 16 |
| C. | 32 x 8 |
| D. | 256 x 1 |
| Answer» C. 32 x 8 | |
| 74. |
If each address space represents one byte of storage space, how mny address RAM chips arranged in a 4 x 6 array, where each chip is 8k x 4 bits? |
| A. | 13 |
| B. | 15 |
| C. | 16 |
| D. | 17 |
| Answer» E. | |
| 75. |
How many RAM chips of size (256k x 1 bit) are required to build 1M Byte memory? |
| A. | 8 |
| B. | 10 |
| C. | 24 |
| D. | 32 |
| Answer» E. | |
| 76. |
What is the correct sequences of time delays that happen during a data transfer from a disk to memory/ |
| A. | seek time, access time, transfer time |
| B. | seek time, latency time, transfer time |
| C. | latency time, seek time, transfer time |
| D. | latency time, access time, transfer time |
| Answer» E. | |
| 77. |
What is the byte capacity of a drum which is 5 inch high, 10 inch diameter, and which has 60 tracks per inch bit density of 800 bits per inch |
| A. | 942000 bytes |
| B. | 471000 bytes |
| C. | 18800 bytes |
| D. | 16384 bytes |
| Answer» E. | |
| 78. |
How many input lnes are needed to construc 1024 bit coincident core plane? |
| A. | 10 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» D. 64 | |
| 79. |
What is the average access time for a drum rotating at 4000 revolutions per minute? |
| A. | 2.5 milli seconds |
| B. | 5.0 milli seconds |
| C. | 7.5 milli seconds |
| D. | 4.0 milli seconds |
| Answer» D. 4.0 milli seconds | |
| 80. |
The larger the RAM of a computer, the faster is its speed, Since it eliminates |
| A. | need for ROM |
| B. | need for external memory |
| C. | frequent disk I/Os |
| D. | need for a data- wide path |
| Answer» D. need for a data- wide path | |
| 81. |
Scratch - pad memory is a .....memory |
| A. | Last - in First-out |
| B. | First-in First-out |
| C. | Local permanent memory |
| D. | Local temporary memory |
| Answer» E. | |
| 82. |
Read Cycle must be fillowed by |
| A. | Random access cycle |
| B. | write cycle |
| C. | ROM cycle |
| D. | any of these |
| Answer» C. ROM cycle | |
| 83. |
Which of the following memory is capable of operating at electronic speed? |
| A. | Semi conductor memory |
| B. | Magnetic disks |
| C. | Magnetic drums |
| D. | Magnetic Tapes |
| Answer» B. Magnetic disks | |
| 84. |
Which of the following is the internal memory at the system (computer) ? |
| A. | CPU register |
| B. | Cache |
| C. | Main memory |
| D. | all of these |
| Answer» E. | |
| 85. |
A hardware unit which is used to monitor computer processing is |
| A. | console |
| B. | dot matrix printer |
| C. | mouse |
| D. | ROM |
| Answer» B. dot matrix printer | |
| 86. |
The input unit of a computer |
| A. | feeds the data in CPU |
| B. | retrieves the data from CPU |
| C. | directs all other units |
| D. | all of these |
| Answer» B. retrieves the data from CPU | |
| 87. |
Choose the correct statement (s) from the following/ |
| A. | PROM contains a programmable AND array and a fixed OR array |
| B. | PLA contains a fixed AND array and a programmable OR array |
| C. | PROM contains a fixed AND array and programmable OR array |
| D. | None of these |
| Answer» D. None of these | |
| 88. |
Commonly used auxiliary storage device are |
| A. | magnetic tape, magnetic tape and magnetic disk. |
| B. | magnetic core, magnetic taps and magnetic drum |
| C. | magnetic disk, semiconductor memory and magnetic drum. |
| D. | magnetic tape, monolithic storage and magnetic disk |
| Answer» B. magnetic core, magnetic taps and magnetic drum | |
| 89. |
Memory consisting of electronic crcuits attached into silicon chip is known as |
| A. | magnetic core memory |
| B. | semi conductor memory |
| C. | thin film memory |
| D. | MOS memory |
| Answer» C. thin film memory | |
| 90. |
Semiconductor memory is |
| A. | somewhat slower than magnetic core memory |
| B. | a volatile memory |
| C. | somewhat larger than the magnetic core memory |
| D. | None of these |
| Answer» C. somewhat larger than the magnetic core memory | |
| 91. |
A charge coupled device has |
| A. | low cost coupled device has |
| B. | high cost per bit |
| C. | low density |
| D. | none of these |
| Answer» B. high cost per bit | |
| 92. |
Which of the following memories must be refreshed many times per second? |
| A. | Static RAM |
| B. | Dynamic RAM |
| C. | EPROM |
| D. | ROM |
| Answer» C. EPROM | |
| 93. |
which memory is non-volatile and may be written only once? |
| A. | RAM |
| B. | EE-ROM |
| C. | EPROM |
| D. | PROM |
| Answer» E. | |
| 94. |
Non-volatility is an important advantage of |
| A. | CCDs |
| B. | RAM |
| C. | Magnetic bubbles |
| D. | PROM |
| Answer» E. | |
| 95. |
Which of the following need extra hardware for DRAM refreshing? |
| A. | 8085 |
| B. | Motoral -68000 |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» D. none of these | |
| 96. |
which of the following is/are advantages of virtual memory? |
| A. | Faster access to memory on an average. |
| B. | processes can be given protected address spaces |
| C. | both (a) and (b) |
| D. | Programmes larger than the physical memory size can be run |
| Answer» D. Programmes larger than the physical memory size can be run | |
| 97. |
In a virtual memory system the address space specified by the address lines of the CPU must be .......than the physical memory size and ............ than the secondary storage size. |
| A. | a larger memory is obtained |
| B. | effective speed of the memory is increased |
| C. | the cost of the memory is reduced |
| D. | a non-volatile memory is obtained |
| Answer» C. the cost of the memory is reduced | |
| 98. |
An Advantage of memry interfacing is that |
| A. | a large memory is obtained |
| B. | effective speed of the memory is increased |
| C. | the cost of the memory is reduced |
| D. | a non- volatile memory is obtained |
| Answer» C. the cost of the memory is reduced | |
| 99. |
A software program stored in a ROM that can not be changed easily is called |
| A. | hardware |
| B. | linker |
| C. | editor |
| D. | firmware |
| Answer» E. | |
| 100. |
Which of the following is the internal memory of the system (computer) ? |
| A. | CPU register |
| B. | Cache |
| C. | Main Memory |
| D. | All of these |
| Answer» E. | |