CAO_Unit-2

What is the bias used in IEEE 754 single-precision floating-point format?

• a) 127

• b) 128

• c) 1023

• d) 8192

The IEEE 754 standard defines how many bits for the exponent in double-precision floating-point representation?

• a) 8

• b) 10

• c) 11

• d) 16

What is the main advantage of the Carry Look-Ahead Adder over a Ripple Carry Adder?

• a) Requires fewer logic gates

• b) Consumes less power

• c) Reduces carry propagation delay

• d) Uses fewer transistors

How is the number -5 represented in an 8-bit two’s complement system?

• a) 00000101

• b) 11111011

• c) 10000101

• d) 10100001

In two’s complement representation, what is the range of an 8-bit signed integer?

• a) -128 to 127

• b) -127 to 128

• c) -256 to 255

• d) 0 to 255

A floating-point number in IEEE 754 format has an exponent field of 8 bits. If the exponent stored is 10000001, what is the actual exponent value?

• a) 129

• b) 1

• c) -127

• d) 3

What is the main drawback of using sign-magnitude representation for signed numbers?

• a) It does not support negative numbers

• b) It requires extra bits for exponent storage

• c) It has two representations for zero

• d) It is computationally faster

In a ripple carry adder with 4-bit binary inputs, how many full adders are needed?

• a) 2

• b) 3

• c) 4

• d) 5

Perform an arithmetic right shift by 1 position on the 8-bit two’s complement number 10110100. What is the resulting 8-bit binary value?

• a) 11101101

• b) 11011010

• c) 10110100

• d) 11110101

An 8-bit two’s complement number 11010110 is extended to a 16-bit two’s complement number. What is the resulting 16-bit binary value?

• a) 0000000011010110

• b) 1111111111010110

• c) 1101011000000000

• d) 1111000011010110