Computer System Architecture

281. ____________ is the step during which a new instruction is read from the memory:

1. Decode
2. Fetch
3. Execute
4. None of these

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282. ____________ is the step during which the operations specified by the instruction are executed:

1. Execute
2. Decode
3. Both a& b
4. None of these

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283. Decode is the step during which instruction is ____________:

1. Initialized
2. Incremented
3. Decoded
4. Both b & c

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284. The instruction fetch operation is initiated by loading the contents of program counter into the and sends request to memory:

1. Memory register and read
2. Memory register and write
3. Data register and read
4. Address register and read

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285. The contents of the program counter is the ____________ of the instruction to be run:

1. Data
2. Address
3. Counter
4. None of these

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286. The instruction read from memory is then placed in the ____________ and contents of program counter is ____________ so that it contains the address of ____________ instruction in the program:

1. Program counter, incremented and next
2. Instruction register, incremented and previous
3. Instruction register, incremented and next
4. Address register, decremented and next

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287. Execution of instruction specified by instruction to perform:

1. Operation
2. Operands
3. Both a & b
4. None of these

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288. ____________ is a symbolic representation of discrete elements of information:

1. Data
2. Code
3. Address
4. Control

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289. Group of binary bits(0&1) is known as:

1. Binary code
2. Digit code
3. Symbolic representation
4. None of these

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290. A group of 4 binary bits is called:

1. Nibble
2. Byte
3. Decimal
4. Digit

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