Gce Model Questions Vol1 2020 Computer Studies Question 4

Practice essay / theory question 4 from the 2020 Gce Model Questions Vol1 Computer Studies examination. This question covers Data and Information .

Gce Model Questions Vol1 2020 Computer Studies Essay / Theory
Topic: Data and Information
Question 4 GCE_MODEL_QUESTIONS_VOL1 • 2020 • COMPUTER_STUDIES • essay

A school ICT department needs to store and transmit 5‑minute 1080p video recordings of classroom lessons efficiently.

Question Parts

( a )
Explain the difference between lossless and lossy data compression and give one typical example of each used for video files.
( b )
Calculate the approximate size of the uncompressed 5‑minute 1080p video. Assume a frame size of 1920 × 1080 pixels, 24‑bit colour depth, and a frame rate of 30 fps. Express your answer in gigabytes (GB) to two decimal places.
( c )
If a lossy codec reduces the file size by 80 % while keeping acceptable visual quality, determine the resulting file size in gigabytes and discuss one major trade‑off involved in using such compression.
( d )
Recommend a suitable compression approach for archiving the school’s lecture videos and justify your choice in terms of storage efficiency, playback compatibility and educational value.

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About This Question

This is Gce Model Questions Vol1 2020 Computer Studies Question 4. It is one of the essay questions from the 2020 Gce Model Questions Vol1 Computer Studies examination.

The question covers Data and Information .

View More Gce Model Questions Vol1 2020 Computer Studies Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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