Fundamentals of data representation

Question 1

True or false:

Computers use binary to represent all data and instructions

Answer 1

True

Question 2

True or false:

A bit is the fundamental unit of information

Answer 2

True

Question 3

How many bits are in a byte?

Answer 3

8

Question 4

How many bytes are there in a kilobyte?

Answer 4

1000

Question 5

How many kilobytes are there in a megabyte?

Answer 5

1000

Question 6

How many megabytes are there in a gigabyte?

Answer 6

1000

Question 7

How many gigabytes are there in a terabyte?

Answer 7

1000

Question 8

Put these in order of size, smallest to largest:

Terabyte, Kilobyte, Gigabyte, Bit, Nibble, Megabyte, byte

Answer 8

Bit, Nibble, Byte, Kilobyte, Megabyte,GB, TB

Question 9

Unicode uses the same code as ASCII up to?

Answer 9

127

Question 10

Sound is analogue so must be converted to a digital form for storage and processing in a computer.

True or False?

Answer 10

True

Question 11

Why does sound need to be converted to a digital form of storage to be processed in a computer?

Answer 11

Because it’s analogue

Question 12

How is sound converted to a digital form?

Answer 12

Sampling the soundwaves

Question 13

Binary addition:

1 + 0 is

Answer 13

1

Question 14

Binary addition:

1 + 1 is

Answer 14

0, carry a 1

Question 15

Binary addition:

1 + 1 + 1

Answer 15

1, carry a 1