iGCSE Computer Science: Data Compression and Encryption

iGCSE Computer Science: Data Compression and Encryption

9th - 12th Grade

18 Qs

quiz-placeholder

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iGCSE Computer Science: Data Compression and Encryption

iGCSE Computer Science: Data Compression and Encryption

Assessment

Quiz

Computers

9th - 12th Grade

Hard

Created by

Calum Gordon

Used 233+ times

FREE Resource

18 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Which of these are recognised types of file compression? (select all that apply)

lossless

lossy

superchannel

standard

redundant

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

What are the main reasons to compress data? (select all that apply)

To reduce secondary storage space

To maximise the available RAM memory

To speed up network transmission times

To optimise the data

To reduce packet congestion on networks

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Which of these are recognised lossless compression algorithms? (select all that apply)

RLE

LZ-77 (dictionary coder)

Caesar cipher

Merges sort

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

What is the correct Run-length encoding for the data: cccmmmmmsssssdcccccc

3c5m5s1d6c

c3m5s5d1c6

cmsdc35516

cccmmmmmsssssdcccccc

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Which of these image file formats support lossless compression techniques? (select all that apply)

JPG

PNG

GIF

BMP

SVG

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which of these audio file formats support lossy compression?

FLAC

MP3

WAV

OggPCM

WMA

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

What is the correct order of memory storage units from smallest to largest?

KiB MB MiB GB TiB

KiB MiB MB TiB GB

MB MiB KB GB TiB

KB GB MB MiB TiB

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