Three questions. What is the correct answer? Choose one. MCQ 1. The sign of the

Question

Three questions. What is the correct answer? Choose one. MCQ

1.

The sign of the number stored in the following IEEE 754 representation

0100000001000000000000000000000

Selected Answer:

is negative.

is positive.

information is not there.

could be negative or positive.

2.

In representing -1/4 in IEEE 754, the value of the exponent plus bias (127) is

Selected Answer:

11111101

01111101

10000000

01111111

3.

The fraction part in IEEE 754 representation of -1/4 is

Selected Answer:

0000000000000000000000

01000000000000000000000

10000000000000000000000

101111101

Selected Answer:

is negative.

is positive.

information is not there.

could be negative or positive.

Explanation / Answer

1) here left most bit of number is 0 . which denotes sign of number and 0 = positive number.

hence given number is positive.

hence option (2) is correct answer.

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2)

-1/4 can be represented as : - 0.25

equivalent binary number for given decimal = (- 0.01 )

It can also be represented as : (-1) * 2-2

here exponent = -2

and biased exponent = 127 - 2 = 125

125 can be represented in binary as : 01111101

hence option (2) is correct answer.

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3)

here binary number generated from -1/4 is (-1)* 2-2 .

i.e fraction part of the number is 0.

hence option (1) is correct answer.

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