MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 90 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Cache memory acts between_______. |
| A. | CPU and RAM |
| B. | RAM and ROM |
| C. | CPU and Hard Disk |
| D. | None of these |
| Answer» B. RAM and ROM | |
| 52. |
A three input NOR gate gives logic high output only when_____. |
| A. | one input is high |
| B. | one input is low |
| C. | two input are low |
| D. | all input are high |
| Answer» E. | |
| 53. |
The circuit converting binary data in to decimal is_____. |
| A. | Encoder |
| B. | Multiplexer |
| C. | Decoder |
| D. | Code converter |
| Answer» E. | |
| 54. |
An instruction pipeline can be implemented by means of |
| A. | LIFO buffer |
| B. | FIFO buffer |
| C. | Stack |
| D. | None of the above |
| Answer» C. Stack | |
| 55. |
The instruction ‘ORG O’ is a |
| A. | Machine Instruction. |
| B. | Pseudo instruction. |
| C. | High level instruction. |
| D. | Memory instruction. |
| Answer» C. High level instruction. | |
| 56. |
A-Flip Flop can be converted into T-Flip Flop by using additional logic circuit |
| A. | n TQD =• |
| B. | T D = |
| C. | D = T . Q n |
| D. | n TQD =⊕ |
| Answer» E. | |
| 57. |
An interface that provides I/O transfer of data directly to and form the memory unitand peripheral is termed as |
| A. | DDA. |
| B. | Serial interface. |
| C. | BR. |
| D. | DMA. |
| Answer» E. | |
| 58. |
A device/circuit that goes through a predefined sequence of states upon theapplication of input pulses is called |
| A. | register |
| B. | flip-flop |
| C. | transistor. |
| D. | counter. |
| Answer» E. | |
| 59. |
The time interval between adjacent bits is called the_____. |
| A. | Word-time |
| B. | Bit-time |
| C. | Turn around time |
| D. | Slice time |
| Answer» C. Turn around time | |
| 60. |
The load instruction is mostly used to designate a transfer from memory to a processor register known as |
| A. | Accumulator |
| B. | Instruction Register |
| C. | Program counter |
| D. | Memory address Register |
| Answer» B. Instruction Register | |
| 61. |
The main memory in a Personal Computer (PC) is made of |
| A. | cache memory. |
| B. | static RAM |
| C. | Dynamic Ram |
| D. | both (A) and (B) . |
| Answer» E. | |
| 62. |
When CPU is executing a Program that is part of the Operating System, it issaid to be in _____. |
| A. | Interrupt mode |
| B. | System mode |
| C. | Half mode |
| D. | Simplex mode |
| Answer» C. Half mode | |
| 63. |
PSW is saved in stack when there is a _____. |
| A. | interrupt recognized |
| B. | execution of RST instruction |
| C. | Execution of CALL instruction |
| D. | All of these |
| Answer» B. execution of RST instruction | |
| 64. |
Memory unit accessed by content is called______. |
| A. | Read only memory |
| B. | Programmable Memory |
| C. | Virtual Memory |
| D. | Associative Memory |
| Answer» E. | |
| 65. |
If the main memory is of 8K bytes and the cache memory is of 2K words. It uses associative mapping. Then each word of cache memory shall be |
| A. | 11 bits |
| B. | 21 bits |
| C. | 16 bits |
| D. | 20 bits |
| Answer» D. 20 bits | |
| 66. |
Von Neumann architecture is ______. |
| A. | SISD |
| B. | SIMD |
| C. | MIMD |
| D. | MISD |
| Answer» B. SIMD | |
| 67. |
A k-bit field can specify any one of_____. |
| A. | 3k registers |
| B. | 2k registers |
| C. | K2 registers |
| D. | K3 registers |
| Answer» C. K2 registers | |
| 68. |
A floating point number that has a O in the MSB of mantissa is said tohave_____. |
| A. | Overflow |
| B. | Underflow |
| C. | Important number |
| D. | Undefined |
| Answer» C. Important number | |
| 69. |
Write Through technique is used in which memory for updating the data |
| A. | Virtual memory |
| B. | Main memory |
| C. | Auxiliary memory |
| D. | Cache memory |
| Answer» E. | |
| 70. |
The idea of cache memory is based ______. |
| A. | on the property of locality of reference |
| B. | on the heuristic 90-10 rule |
| C. | on the fact that references generally tend to cluster |
| D. | all of the above |
| Answer» B. on the heuristic 90-10 rule | |
| 71. |
Memory unit accessed by content is called |
| A. | Read only memory |
| B. | Programmable Memory |
| C. | Virtual Memory |
| D. | Associative Memory |
| Answer» E. | |
| 72. |
In computers, subtraction is generally carried out by ______. |
| A. | 9’s complement |
| B. | 10’s complement |
| C. | 1’s complement |
| D. | 2’s complement |
| Answer» E. | |
| 73. |
Logic X-OR operation of (4ACO)H& (B53F)H results _____. |
| A. | AACB |
| B. | 0000 |
| C. | FFFF |
| D. | ABCD |
| Answer» D. ABCD | |
| 74. |
What characteristic of RAM memory makes it not suitable for permanentstorage? |
| A. | too slow |
| B. | unreliable |
| C. | it is volatile |
| D. | too bulky |
| Answer» D. too bulky | |
| 75. |
Cache memory works on the principle of_____. |
| A. | Locality of data |
| B. | Locality of memory |
| C. | Locality of reference |
| D. | Locality of reference & memory |
| Answer» D. Locality of reference & memory | |
| 76. |
A floating point number that has a O in the MSB of mantissa is said to have |
| A. | Overflow |
| B. | Underflow |
| C. | Important number |
| D. | Undefined |
| Answer» C. Important number | |
| 77. |
Logic gates with a set of input and outputs is arrangement of______. |
| A. | Computational circuit |
| B. | Logic circuit |
| C. | Design circuits |
| D. | Register |
| Answer» B. Logic circuit | |
| 78. |
_________ register keeps track of the instructions stored in program storedin memory. |
| A. | AR (Address Register) |
| B. | XR (Index Register) |
| C. | PC (Program Counter) |
| D. | AC (Accumulator) |
| Answer» D. AC (Accumulator) | |
| 79. |
The circuit used to store one bit of data is known as ______. |
| A. | Encoder |
| B. | OR gate |
| C. | Flip Flop |
| D. | Decoder |
| Answer» D. Decoder | |
| 80. |
Generally Dynamic RAM is used as main memory in a computer system as it |
| A. | Consumes less power |
| B. | has higher speed |
| C. | has lower cell density |
| D. | needs refreshing circuitary |
| Answer» C. has lower cell density | |
| 81. |
The load instruction is mostly used to designate a transfer from memory to aprocessor register known as____. |
| A. | Accumulator |
| B. | Instruction Register |
| C. | Program counter |
| D. | Memory address Register |
| Answer» B. Instruction Register | |
| 82. |
A group of bits that tell the computer to perform a specific operation isknown as____. |
| A. | Instruction code |
| B. | Micro-operation |
| C. | Accumulator |
| D. | Register |
| Answer» B. Micro-operation | |
| 83. |
The average time required to reach a storage location in memory and obtainits contents is called_____. |
| A. | Latency time. |
| B. | Access time. |
| C. | Turnaround time. |
| D. | Response time. |
| Answer» C. Turnaround time. | |
| 84. |
Self-contained sequence of instructions that performs a given computational task iscalled |
| A. | Function |
| B. | Procedure |
| C. | Subroutine |
| D. | Routine |
| Answer» B. Procedure | |
| 85. |
A microprogram sequencer |
| A. | generates the address of next micro instruction to be executed. |
| B. | generates the control signals to execute a microinstruction. |
| C. | sequentially averages all microinstructions in the control memory. |
| D. | enables the efficient handling of a micro program subroutine. |
| Answer» B. generates the control signals to execute a microinstruction. | |
| 86. |
The average time required to reach a storage location in memory and obtain itscontents is called |
| A. | Latency time. |
| B. | Access time. |
| C. | Turnaround time. |
| D. | Response time. |
| Answer» C. Turnaround time. | |
| 87. |
The circuit converting binary data in to decimal is |
| A. | Encoder |
| B. | Multiplexer |
| C. | Decoder |
| D. | Code converter |
| Answer» E. | |
| 88. |
Which of the following is lowest in memory hierarchy? |
| A. | Cache memory |
| B. | Secondary memory |
| C. | Registers |
| D. | RAM |
| Answer» C. Registers | |
| 89. |
Assembly language |
| A. | uses alphabetic codes in place of binary numbers used in machine language |
| B. | is the easiest language to write programs |
| C. | need not be translated into machine language |
| D. | None of these |
| Answer» B. is the easiest language to write programs | |
| 90. |
Status bit is also called |
| A. | Binary bit |
| B. | Flag bit |
| C. | Signed bit |
| D. | Unsigned bit |
| Answer» C. Signed bit | |