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Cambridge AS Level Computer Science: Data Representation

Authored by Hazel Intatano

Computers

11th Grade

30 Questions

Used 4+ times

Cambridge AS Level Computer Science: Data Representation
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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the correct equivalent size of 1 kilobyte (1 KB) using denary prefixes?

1024 bytes

1000 bytes

1048 bytes

100 bytes

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the binary representation of the decimal number 7?

0110

0111

1000

0101

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the 8-bit binary number 01101001, what is the first step in converting it to denary?

Add all the digits together

Multiply each bit by its corresponding power of 2

Convert it directly to hexadecimal

Reverse the order of the bits

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When converting the denary number 163 to hexadecimal, what is the first step?

Multiply the number by 16

Divide the denary value by 16 and record the whole times and the remainder

Add 16 to the number

Subtract 16 from the number

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you are given the BCD code 0100, what is the corresponding denary digit?

2

3

4

5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is Binary Coded Decimal (BCD) used in digital systems?

To represent each denary digit with a unique 4-bit code

To store large numbers efficiently

To perform fast arithmetic operations

To convert text to binary

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many bits are in a single BCD code?

2 bits

4 bits

6 bits

8 bits

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