Computer/Computer Science Number System Sample Test,Sample questions

Question:
 Decimal number is repeatedly divided by _________ to obtain its equivalent hexadecimal number.

1.10

2.2

3.8

4.16


Question:
 For converting binary to octal, “If number of bits in a binary number is not multiple of 3, then add required number of 0s on ______ of the binary number

1.least significant position

2. most significant position

3.Any of the above

4.None of the above


Question:
 In hexadecimal system, each alphanumeric digit is represented as a group of _____________ binary digits

1.1C2

2. 2A.1

3.1ABCD

4.67GA


Question:
 In hexadecimal system, each alphanumeric digit is represented as a group of _____________ binary digits

1.1C2

2. 2A.1

3.1ABCD

4.67GA


Question:
 Octal equivalent of decimal number 122 is ___

1.172

2.173

3.174

4.171


Question:
 Which is the Most Significant Bit (MSB) in 010101

1.0

2.1

3.Both of the above

4.None of the above


Question:
 Which of the following memory address is easy to remember or compact in size?

1.16-bit binary address

2.16-bit Hexadecimal address

3.16-bit Octal address

4.None of the above


Question:
 Which of the following number system is used by digital devices?

1. Binary number system

2.. Decimal number system

3.Hexadecimal number system

4.Octal number system


Question:
 Which of the following symbol is not a part of Hexadecimal number system?

1.0

2.9

3.10

4.A


Question:
4 bit binary code for binary number 15 is ___

1.1110

2.1111

3.1100

4.1101


Question:
4 bit binary value of hexadecimal symbol ‘D’ is

1.1101

2.1111

3.1001

4.100


Question:
base value of hexadecimal number system is ____

1.2

2.10

3.16

4.8


Question:
Binary equivalent of decimal number 65 is ____

1.1000001

2.1000000

3.1000011

4.100001


Question:
Binary number system is also referred as _______

1.base-2 system

2.base-8- system

3.base-10-system

4.base-16- system


Question:
Binary representation of the following hexadecimal number is _______________
98E

1.100110001111

2. 100110001110

3.100110101110

4.100110001010


Question:
Decimal number equivalent to binary number 1110101 is _

1.117

2.65

3.75

4.175


Question:
Decimal number system has ________ digits

1.8

2.7

3.19

4.10


Question:
Decimal representation of the following hexadecimal number is ______________
A.A

1.10.625

2.10.125

3.10.725

4.10.250


Question:
Equivalent binary number of decimal number 0.25 is ________

1.0.11

2. 0.00

3. 0.01

4.1.00


Question:
Every number system has a set of unique characters or literals. The count of these literals is called _

1.matrix

2.radix

3.radical

4.exponent


Question:
Hexadecimal equivalent of decimal number 122 is ___

1. 7A

2.7B

3. 7C

4.7D


Question:
Hexadecimal number equivalent to binary number 111010

1.117

2.65

3.75

4.175


Question:
Hexadecimal number system consist of _________ unique symbols?

1.8

2.16

3.10

4.2


Question:
Hexadecimal representation of the following binary number is ______________
1101011.10101

1.6B.A8

2.6B.A81

3.6B.98

4.6A.A8


Question:
Hexadecimal representation of the following decimal number is ______________
2960

1.B90

2.A90

3.B91

4.A91


Question:
Let X be a number system having B symbols only. Write down the base value of this number system.

1.A

2.B

3.X

4.AB


Question:
Octal number equivalent to binary number 1110101 is _

1.117

2.165

3.75#20

4.175


Question:
Octal number system has digits from __

1.0 – 7

2.1 – 7

3.1- 8

4.0- 9


Question:
Octal representation of the following binary number is ___________
1111.0101

1.17.25

2.17.24

3. 17.26

4.17.27


Question:
Octal representation of the following decimal number is _______________
198

1.310

2.316

3.306

4.326


Question:
Octal representation of the following hexadecimal number is _______________
A7B

1.5175

2.5174

3.5173

4.. 5172


Question:
The decimal number is repeatedly divided by _________ to obtain its equivalent octal number.

1.2

2.8

3.16

4.10


Question:
To convert 110010101101 to hexadecimal value, we make a group of 4 bits from _

1.right to left

2. left to right

3.between

4.None of the above


Question:
To convert binary number 10101100.01011 to octal number, we will make 3-bit groups from ____________ for the integer part and _______ for the fractional part

1.. right to left, left to right

2.. left to right, right to left

3.right to left, right to left

4.left to right, left to right


Question:
To convert decimal number 0.675 to octal, we will multiply the fractional part by __

1.2

2.4

3.6

4.8


Question:
Which Hexadecimal symbol is used for decimal number 15?

1.A

2.C

3.E

4.F


Question:
Which is the Least Significant Bit (LSB) in 010101

1.0

2.1

3.Both of the above

4.None of the above


Question:
Which of the following are application of Hexadecimal number system?

1.To simplify the memory address representation

2.Hexadecimal numbers are used for describing the colors on the webpage.

3.Both of the above

4.None of the above


Question:
Which of the following is not a number system in reference to computer?

1. Binary number system

2.Decimal number system

3.Octal number system

4.Penta number system


Question:
Which of the following is not an example of Octal number?

1.123

2.478

3.372

4.36


Question:
Which of the following is not an examples of binary numbers?

1.010101

2.11100.01

3.111001

4.None of the above


Question:
Which of the following mathematical operation is used to convert Decimal Number with fractional part only like 0.125 to another Number System

1.Addition

2.Subtraction

3.Multiplication

4.Division


Question:
Which of the following number system is known as base-10 system.

1.Binary Number System

2.Hexadecimal Number System

3.Octal Number System

4.Decimal Number System


Question:
Which of the following number system is mostly used by humans for their mathematical/calculation work?

1.Binary number system

2.Decimal number system

3.Hexadecimal number system

4. Octal number system


Question:
Which of the following number system is used to simplify the binary representation for us to understand?

1.Hexadecimal number system

2.Octal number system

3.Both of the above

4.None of the above


Question:
Which of the following sequence is correct to convert decimal number to binary?
Step 1: Note the remainder.
Step 2: Divide the given number by 2.
Step 3: Write the noted remainders in the reverse order (from bottom to top)
Step 4: Keep on dividing the quotient by 2 and note the remainder till the quotient is zero.

1. Step 1, Step 2, Step 3, Step 4

2. Step 2, Step 1, Step 4, Step 3

3.Step 3, Step 2, Step 1, Step 4

4. Step 2, Step 3, Step 1, Step 4


Question:
Which of the following will occupy more memory space?

1. 1111 (binary number)

2.A2 (Hexadecimal number)

3.12 (Octal number)

4.None of the above


Question:
Which two numbers form the binary number system?

1. 0 and 2

2.1 and 2

3. 0 and 1

4.1 and 3


Question:
________ in a binary number are grouped together to get hexadecimal number.

1.4 bits

2.2 bits

3.3 bits

4.5 bits


Question:
____________in a binary number are grouped together to get octal number.

1.4 bits

2.2 bits

3.3 bits

4.5bits


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