IGCSE Computing Topic 1 Number Conversion and Topic 2 Data Transmission

Question 1

What is the binary equivalent of the decimal number 10?

Answer 1

1010

Question 2

True or False: The hexadecimal system uses base 16.

Answer 2

True

Question 3

Convert the binary number 1101 to decimal.

Answer 3

13

Question 4

What is the octal equivalent of the binary number 111?

Answer 4

7

Question 5

Fill in the blank: The decimal number system is based on base __.

Answer 5

10

Question 6

Which of the following is a valid hexadecimal number? A) 1G B) 1F C) 1Z

Answer 6

B) 1F

Question 7

Convert the hexadecimal number 1A to decimal.

Answer 7

26

Question 8

True or False: A byte consists of 8 bits.

Answer 8

True

Question 9

What is the decimal equivalent of the binary number 101011?

Answer 9

43

Question 10

Fill in the blank: Data is transmitted in the form of __.

Answer 10

bits

Question 11

What is the primary purpose of data transmission?

Answer 11

To transfer data from one device to another.

Question 12

Which protocol is commonly used for secure data transmission over the internet?

Answer 12

HTTPS

Question 13

True or False: Serial transmission sends multiple bits simultaneously.

Answer 13

False

Question 14

What does the term ‘bandwidth’ refer to in data transmission?

Answer 14

The maximum rate of data transfer across a network.

Question 15

What is the difference between analog and digital data?

Answer 15

Analog data is continuous, while digital data is discrete.

Question 16

Fill in the blank: The speed of data transmission is measured in __.

Answer 16

bits per second (bps)

Question 17

Which type of data transmission is faster: Serial or Parallel?

Answer 17

Parallel

Question 18

What is a common method of error detection in data transmission?

Answer 18

Checksums

Question 19

True or False: Data packets can be lost during transmission.

Answer 19

True

Question 20

What is the role of a ‘router’ in data transmission?

Answer 20

To direct data packets between networks.

Question 21

Convert the decimal number 255 to binary.

Answer 21

11111111

Question 22

What is the term for the process of converting data into a coded format?

Answer 22

Encoding

Question 23

Fill in the blank: The maximum number of unique values in an n-bit binary number is __.

Answer 23

2^n

Question 24

What is the hexadecimal representation of the decimal number 255?

Answer 24

FF

Question 25

True or False: Data transmission can occur over wired and wireless mediums.

Answer 25

True

Question 26

What is a ‘protocol’ in the context of data transmission?

Answer 26

A set of rules governing data communication.

Question 27

Convert the octal number 17 to decimal.

Answer 27

15