Karteikarten
Data Compression & Backup
Karten in diesem Stapel (5)
- 1What is Compression?> Reduction of a file size (and therefore disk space taken up) by applying a certain algorithm
> Algorithm is either lossy (not all original data can be recovered) or lossless (no data is lost)
> Files must be decompressed before they are read again - 2What are some Examples of the Uses of Compression?> Archived files, i.e., those that won't be accessed regularly
> Files that are to be transferred on a network, to speed up network transfer - 3What is Backup Software?> Software that creates a copy of important data, and stores it in an external location
> Ensures that if one copy becomes lost or corrupted, the file can be restored using another - 4What is a Full Backup?> A backup that makes a copy of everything on the system onto backup media
> Extremely slow process that takes up a lot of space
> Very easy to restore a system from - 5What is an Incremental Backup?> Only the files that have changed since the last backup are copied
> Faster and use less space
> More difficult to restore a system from since the most recent full backup must be applied first, then each incremental backup in the correct order
Informationen
- Beschreibung
- A level Computer Science (Applications Generation) Karteikarten am Data Compression & Backup, erstellt von Malachy Moran-Tun am 05/12/2022.
- Erstellt von
- Malachy Moran-Tun
- Aufrufe
- 6
- Verlauf
-
- Erstellt von Malachy Moran-Tun · 30 Nov 2022
- Kopiert von Malachy Moran-Tun · 5 Dez 2022
- Bewertung