QCE Digital Solutions Unit 4: Compression and securing stored and transferred data
Students learn how lossy and lossless compression work and the order in which compression, encryption and hashing are combined.
One content description from the full QCE Digital Solutions Unit 4 — Digital Methods for Exchanging Data journey. All 8 modules below are in that journey too, with the same content — add just these to a class, or the whole strand.
Modules (8)
1
Why compression is needed: less storage space
2
Why compression is needed: less bandwidth
3
Why compression is needed: shorter transmission time
4
Lossy compression
5
Lossless compression
6
Comparing lossy and lossless compression
7
Decompressing a file
8
Order of compression, encryption and hashing
For Teachers
Add this journey to your class and track every student in real time.
Create a free teacher account →No credit card. No setup fee. Make a class and invite students in under three minutes.
For Students
Start this journey on Cloodit — track progress, earn badges, and play live sprints with your class.
Start Learning Free →