G7-ICT 4th Assessment

1. What is the base of the binary number system?

• a) 2
• b) 8
• c) 10
• d) 16

2. How many symbols are used in the binary number system?

• a) 2
• b) 8
• c) 10
• d) 16

3. What are the symbols used in the binary number system?

• a) 0 and 9
• b) 0 and 1
• c) 1 and 9
• d) 0 and 2

4. In binary, each digit is known as a:

• a) Byte
• b) Nibble
• c) Bit
• d) Word

5. Which of the following is a valid 4-bit binary number?

• a) 1012
• b) 1100
• c) 1021
• d) 11110

6. What is the binary representation of the decimal number 4?

• a) 001
• b) 10
• c) 100
• d) 101

7. Which binary number represents the decimal number 7?

• a) 111
• b) 101
• c) 110
• d) 1001

8. What is the decimal equivalent of the binary number 1010?

• a) 5
• b) 7
• c) 10
• d) 14

9. What is the first step in converting a decimal number to binary?

• a) Add 2
• b) Subtract 2
• c) Multiply by 2
• d) Divide by 2

10. After dividing a decimal number by 2 in binary conversion, what is done next?

• Write down the quotient
• Write down the remainder
• Subtract 1
• Add 1