1. When f is the fraction of code executed on parallel processors, which of the following statements is correct?

Speedup=1(1f)+fNSpeedup=1(1f)+fN

Group of answer choices

Speedup must be smaller than 1 if using the parallel processors gives better performance.

As N (number of parallel processors) increases, speedup is bound by 1/(1-f).

As N increases, return for using more processors becomes more significant.

When f is small, the use of parallel processors has large impact.

2. Which of the following statements is correct about LSH instruction?

Group of answer choices

None of these

Multiply accumulator by 2

Divide accumulator by 2

Logical circular shift

3. Which of the following statements is correct about RSH instruction?

Group of answer choices

Logical right shift

Divide accumulator by 2

Multiply accumulator by 2

None of these

4. Which of the following statements is wrong?

Group of answer choices

Harmonic mean is an alternative to average execution rate.

Average execution rate can be used to compare performance of different computers.

Harmonic mean execution rate clearly relates to execution time.

Average execution rate is more accurate than harmonic mean execution rate.

5. What does the following Matlab code do?

a=[1 2; 2 1]

Group of answer choices

Creates a 2x2 matrix

Creates a 2x1 matrix

Multiplies 12 by 21

Creates a 1x2 matrix

6. Which of the following statements is wrong?

Group of answer choices

None of these

Any matrix can be inverted

You can multiply a matrix by another matrix

You can find a determinant of any matrix

7. Which of the following statements is wrong?

Group of answer choices

Matlab can easily find determinants of matrices

None of these

Multiplication over two matrices in any order will give you the same result

Multiplication over two matrices is possible

8. Using Matlab, to make a graph of y=sin(t), necessary codes have been written as below:

t = 1 : .5 : 10;

y = sin(t);

plot (t, y)

Which of the following shows the correct input range?

Group of answer choices

None of these

0.5 to 10 in steps of 1

0 to 10 in steps of 0.3

1 to 10 in steps of 0.5