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16 votes
16 votes

The correct matching for the following pairs is:

$$\begin{array}{ll} \text{(A) DMA I/O} & \text{(1) High speed RAM} \\
  \text{(B) Cache} & \text{(2) Disk} \\
   \text{(C) Interrupt I/O} & \text{(3) Printer} \\
  \text{(D) Condition Code Register} & \text{(4) ALU}  \\
 \end{array}$$

  1. $A-4\quad B-3\quad C-1\quad D-2$

  2. $A-2\quad B-1\quad C-3\quad D-4$

  3. $A-4\quad B-3\quad C-2\quad D-1$

  4. $A-2\quad B-3\quad C-4\quad D-1$

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3 Answers

Best answer
29 votes
29 votes

Correct Option: B. $A-2,B-1,C-3,D-4$ 

$$\begin{array}{c l| c l} \hline \text{A.} & \text{DMA I/O} & 2. & \text{Disk}\\\hline \text{B.} & \text{Cache} & 1. & \text{High-speed RAM} \\\hline \text{C.} & \text{Interrupt I/O}  & 3. & \text{Printer}\\\hline \text{D.} & \text{Condition Code Register} & 4. & \text{ALU} \\\hline \end{array}$$

Reason:

  • DMA I/O - For high speed, high volume data transfer from disk without affecting the processor(in most cases).
  • Cache-A high speed & low memory version of a RAM.
  • Interrupt I/O - The printer sends an interrupt signal when it is ready for use.
  • Condition Code Register - Part of the ALU, as a special purpose register, to store flag bits.

[Source - Google/Wikipedia]

edited by
9 votes
9 votes
Answer: B
Answer:

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