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Q1. MIMD stands for
(A) Multiple instruction multiple data
(B) Multiple instruction memory data
(C) Memory instruction multiple data
(D) Multiple information memory data
Answer: (A) Multiple instruction multiple data
Q2. If the value V(x) of the target operand is contained in the address field itself, the addressing mode is
(A) Immediate
(B) Direct
(C) Indirect
(D) Implied
Answer: (B) Direct
Q3. The maximum addressing capacity of a micro processor which uses 16 bit database & 32 bit address base is
(A) 64 K
(B) 4 GB
(C) Both (a) & (b)
(D) None of these
Answer: (B) 4 GB
Q4. A page fault
(A) Occurs when there is an error in a specific page
(B) Occurs when a program accesses a page of main memory
(C) Occurs when a program accesses a page not currently in main memory
(D) Occurs when a program accesses a page belonging to another program
Answer: (C) Occurs when a program accesses a page not currently in main memory
Q5. An n-bit microprocessor has________.
(A) n-bit program counter
(B) n-bit address register
(C) n-bit ALU
(D) n-bit instructions register
Answer: (D) n-bit instructions register
Q6. A group of bits that tell the computer to perform a specific operation is known as
(A) Instruction code
(B) Micro-operation
(C) Accumulator
(D) Register
Answer: (A) Instruction code
Q7. Can be represented in a signed magnitude format and in a 1’s complement format as
(A) 111011 & 100100
(B) 100100 & 111011
(C) 011011 & 100100
(D) 100100 & 011011
Answer: (A) 111011 & 100100
Q8. The memory unit that communicates directly with the CPU is called the
(A) Main memory
(B) Secondary memory
(C) Shared memory
(D) Auxiliary memory
Answer: (A) Main memory
Q9. 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: (A) Accumulator
Q10. When CPU is executing a Program that is part of the Operating System, it is said to be in __.
(A) Interrupt mode
(B) System mode
(C) Half mode
(D) Simplex mode
Answer: (B) System mode
Q11. The communication between the components in a microcomputer takes place via the address and
(A) I/O bus
(B) Data bus
(C) Address bus
(D) Control lines
Answer: (B) Data bus
Q12. The instructions which copy information from one location to another either in the processor’s internal register set or in the external main memory is called
(A) Data transfer instructions
(B) Program control instructions
(C) Input-output Instructions
(D) Logical instructions
Answer: (A) Data transfer instructions
Q13. The average time required to reach a storage location in memory and obtain its contents is called
(A) Latency time
(B) Access time
(C) Turnaround time
(D) Response time
Answer: (B) Access time
Q14. The time interval between adjacent bits is called the________.
(A) Word-time
(B) Bit-time
(C) Turnaround time
(D) Slice time
Answer: (B) Bit-time
Q15. Logic X-OR operation of (4ACO)H & (B53F)H results __.
(A) AACB
(B) 0000
(C) FFFF
(D) ABCD
Answer: (C) FFFF
Computer Organization and Architecture MCQ – All Set
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