Processor execution time can be reduced by which of the following?

Homework Help: Questions and Answers: Processor execution time can be reduced by which of the following?

A. Reducing the number of clock cycles
B. Increasing the clock rate
C. Both
D. None

Answer:

First, let’s understand Processor Execution Time: The execution time of a processor (or CPU) is influenced by the following factors:

• Number of clock cycles required to execute a task.
• Clock rate (speed), which is the number of clock cycles per second.

The execution time of a processor is given by the formula:

Execution Time= Number of Clock Cycles/ Clock Rate​

Where:

• Number of Clock Cycles is the total number of cycles needed to complete the task.
• Clock Rate is the frequency of the clock (in Hz).

Given Options: Step by Step Answering

a) Reducing the number of clock cycles

• If you reduce the number of clock cycles, the total time to execute the task decreases, because execution time is directly proportional to the number of clock cycles. This will reduce the execution time.

b) Increasing the clock rate

• If you increase the clock rate, the execution time decreases because execution time is inversely proportional to the clock rate. This will also reduce the execution time.

c) Both

• Since both reducing the number of clock cycles and increasing the clock rate reduce execution time, this option suggests both methods together will reduce the execution time.

d) None

• We’ll consider this if none of the other options seem correct.

Final Answer

Based on the above analysis, the correct answer is: 

C. Both

Both (option A and B) reducing the number of clock cycles and increasing the clock rate will reduce the execution time of a processor.

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