Computer Architecture Objective Questions Answers for Practice

76. Computer address bus is

1. Multidirectional
2. Bidirectional
3. Unidirectional
4. None of the above

77. CSA stands for?

1. Computer Speed Addition
2. Carry Save Addition
3. Computer Service Architecture
4. None of the mentioned

78. During a write operation if the required block is not present in the cache then............occurs.

1. Write latency
2. Write hi
3. Write delay
4. Write miss

79. Every time a new instruction is loaded into IR the output of..........is loaded into UPC.

1. Starting address generator
2. Loader
3. Linker
4. Clock

80. If the decimal point is placed to the right of the first significant digit, then the number is called

1. Orthogonal
2. Normalized
3. Determinate
4. None of the mentioned

81. In double precision format, the size of the mantissa is

1. 32 bit
2. 52 bit
3. 64 bit
4. 72 bit

82. In IEEE 32-bit representations, the mantissa of the fraction is said to occupy............bits.

1. 24
2. 23
3. 20
4. 16

83. In LRU, the referenced blocks counter is set to’0′ and that of the previous blocks are incremented by one and others remain same, in the case of

1. Hit
2. Miss
3. Delay
4. None of the mentioned

84. In memory-mapped I/O

1. The I/O devices and the memory share the same address space
2. The I/O devices have a separate address space
3. The memory and I/O devices have an associated address space
4. A part of the memory is specifically set aside for the I/O operation

85. In micro-programmed approach, the signals are generated by

1. Machine instructions
2. System programs
3. Utility tools
4. None of the mentioned

86. In multiple Bus organization, the registers are collectively placed and referred as

1. Set registers
2. Register file
3. Register Block
4. Map registers

87. In the case of, Zero-address instruction method the operands are stored in

1. Registers
2. Accumulators
3. Push down stack
4. Cache

88. In which of the following term the performance of cache memory is measured?

1. Chat ratio
2. Hit ratio
3. Copy ratio
4. Data ratio

89. In..............protocol the information is directly written into the main memory.

1. Write through
2. Write back
3. Write first
4. None of the mentioned

90. Individual control words of the micro routine are called as

1. Micro task
2. Micro operation
3. Micro instruction
4. Micro command