πŸ“Š Computer Organization and Architecture
Q. In computers, subtraction is generally carried out by ______.
  • (A) 9’s complement
  • (B) 10’s complement
  • (C) 1’s complement
  • (D) 2’s complement
πŸ’¬ Discuss
βœ… Correct Answer: (D) 2’s complement
πŸ“Š Computer Organization and Architecture
Q. The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to ______.
  • (A) the time its takes for the platter to make a full rotation
  • (B) the time it takes for the read-write head to move into position over the appropriate track
  • (C) the time it takes for the platter to rotate the correct sector under the head
  • (D) none of the above
πŸ’¬ Discuss
βœ… Correct Answer: (A) the time its takes for the platter to make a full rotation
πŸ“Š Computer Organization and Architecture
Q. . Computers use addressing mode techniques for ____________.
  • (A) giving programming versatility to the user by providing facilities as pointers to memory counters for loop control
  • (B) to reduce no. of bits in the field of instruction
  • (C) specifying rules for modifying or interpreting address field of the instruction
  • (D) All the above
πŸ’¬ Discuss
βœ… Correct Answer: (D) All the above
πŸ“Š Computer Organization and Architecture
Q. The average time required to reach a storage location in memory and obtain its contents is called the _____.
  • (A) seek time
  • (B) turnaround time
  • (C) access time
  • (D) transfer time
πŸ’¬ Discuss
βœ… Correct Answer: (C) access time
πŸ“Š Computer Organization and Architecture
Q. 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
πŸ’¬ Discuss
βœ… Correct Answer: (A) on the property of locality of reference
πŸ“Š Computer Organization and Architecture
Q. _________ register keeps track of the instructions stored in program stored in memory.
  • (A) AR (Address Register)
  • (B) XR (Index Register)
  • (C) PC (Program Counter)
  • (D) AC (Accumulator)
πŸ’¬ Discuss
βœ… Correct Answer: (C) PC (Program Counter)