H CS 2024 - Computer Systems Revision

What is the maximum integer that can be represented by an 8-bit binary system?

• 255

• 256

• 127

• 65535

How is the number 194 represented in binary using an 8-bit system?

• 11000010

• 11000011

• 10110010

• 11000100

What is the binary representation of -5 using two's complement in an 8-bit system?

• 11111011

• 00000101

• 10000101

• 11111101

What is the first step in converting a negative decimal number to binary using two's complement?

• Invert all digits

• Add 1 to the rightmost digit

• Take the corresponding positive number

• Change all 1's to 0's and all 0's to 1's

What is the range of numbers a computer can handle with 4 bits for positive integers?

• 0 to 15

• 0 to 16

• 1 to 15

• 1 to 16

What is the lowest number that can be represented with 8 bits using two's complement for negative integers?

• -128

• -127

• 0

• -129

What is the highest number that can be represented with 8 bits using two's complement for negative integers?

• 126

• 127

• 128

• 125

What does the exponent represent in floating-point representation?

• The number of decimal places the point has moved

• The base of the number system

• The mantissa of the number

• The total number of digits in the number

What is the correct representation of the number 34,006.8 in scientific notation as used in floating-point representation?

• 3.40068 x 10^4

• 340.068 x 10^2

• 0.340068 x 10^5

• 34.0068 x 10^3

What does the sign bit of the mantissa represent in binary format?

• 0 for negative and 1 for positive

• 1 for negative and 0 for positive

• 2 for negative and 1 for positive

• 0 for both negative and positive