Exbibyte (EiB)

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Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. How many pebibytes (PiB) are there in 1 exbibyte (EiB)?

A 1000 PiB

B 1024 PiB

2. Which statement about the exbibyte is correct?

A It is the largest unit in the IGCSE syllabus

B It is the smallest unit in the IGCSE syllabus

3. Which is the correct symbol for exbibyte?

A EiB

B EB

4. Which unit sits directly below the exbibyte on the unit ladder?

A Pebibyte (PiB)

B Tebibyte (TiB)

5. To convert 3 EiB into PiB, what should you do?

A Divide 3 by 1024

B Multiply 3 by 1024

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
11 EiB = 1024 PiB		AEiB = PiB / 1024
2EiB		BThe symbol for exbibyte, the largest storage unit in the IGCSE syllabus
3To convert a number of exbibytes into pebibytes, multiply by 1024		COne exbibyte is made of 1024 pebibytes
4To convert a number of pebibytes into exbibytes, divide by 1024		DWrong factor: storage units go up in steps of 1024, not 1000, so 1 EiB = 1024 PiB.
51 EiB = 1000 PiB		EPiB = EiB * 1024
61 EiB = 1024 TiB		FWrong unit: an EiB is 1024 PiB. TiB is two steps below the EiB, not the unit directly below it.

Definitions

EiB

Fill in the Blanks

Complete each line of code by filling in the missing parts.

1 ___ = 1024 PiB

1 EiB = ____ PiB

1 EiB = 1024 ___

2 EiB = 2 * 1024 = ____ PiB

TiB * 1024 = PiB PiB * 1024 = ___

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A pib = 2048

B eib = pib * 1024

C print(eib, 'EiB')

Question 2

A # Convert 3 EiB to PiB

B eib = 3

C factor = 1024

D pib = eib / factor

E print(pib)

Question 3

A 1 KiB = 1024 bytes

B 1 PiB = 1024 TiB

C 1 EiB = 1000 PiB

Question 4

A # EiB uses the exbi prefix

B prefix = 'exa'

C symbol = 'EiB'

D print(prefix + 'byte')

Question 5

A eib = 1

B pib = eib * 1024

C tib = pib * 1024

D gib = tib * 1000

E print(gib)

Answer Key

Exbibyte (EiB)

Section A: Quick Questions

B — 1024 PiB

A — It is the largest unit in the IGCSE syllabus

A — EiB

A — Pebibyte (PiB)

B — Multiply 3 by 1024

Section B: Match the Pairs

1 EiB = 1024 PiB → One exbibyte is made of 1024 pebibytes

EiB → The symbol for exbibyte, the largest storage unit in the IGCSE syllabus

To convert a number of exbibytes into pebibytes, multiply by 1024 → PiB = EiB * 1024

To convert a number of pebibytes into exbibytes, divide by 1024 → EiB = PiB / 1024

1 EiB = 1000 PiB → Wrong factor: storage units go up in steps of 1024, not 1000, so 1 EiB = 1024 PiB.

1 EiB = 1024 TiB → Wrong unit: an EiB is 1024 PiB. TiB is two steps below the EiB, not the unit directly below it.

Section C: Definitions

EiB — Exbibyte: a unit of data storage equal to 1024 pebibytes (PiB). It is the largest unit in the IGCSE syllabus.

Section D: Fill in the Blanks

1 EiB = 1024 PiB

2 EiB = 2 * 1024 = 2048 PiB

TiB * 1024 = PiB
PiB * 1024 = EiB

Section E: Spot the Error

B — EiB is a larger unit than PiB, so converting PiB to EiB means dividing by 1024. It should be eib = pib / 1024.

D — Going from a larger unit (EiB) to a smaller one (PiB) means multiplying by 1024, not dividing. It should be pib = eib * factor.

C — Binary storage units go up in steps of 1024, not 1000. It should be 1 EiB = 1024 PiB.

B — The binary prefix for EiB is exbi, giving exbibyte. 'exa' is the decimal (1000-based) prefix. It should be prefix = 'exbi'.

D — Every step down the unit ladder multiplies by 1024, including TiB to GiB. It should be gib = tib * 1024.