Zusammenfassung der Ressource
1.7:System Software V2
- Key Word
- Utility Program
- Operating System
- Defragmentation
- Compression
- Lossy
- Loseless
- Encryption
- Backup
- Incremental
- Full
- Utility Software
- Utility programs are designed to do just
one or two tasks
- Utility software interacts with
the computers hardware E.G.
the disk Drive
- Utility programs are inbuilt in to the
Operating System
- Utility Programs
- File Compression
- Disk Defragmentation
- File Repair
- Disk Copying
- Disk Formatting
- Disk Backup/Restore
- Anti-Virus
- Compression
- Reducing the size of the file by performing an
algorithm on the original data
- Lossless-The original file can be
re-created as no data is lost
- Defragmentation Software
- When a hard disk drive is new, files get
added onto the disk in order. Very much
like starting with a blank piece of paper
and adding to it
- As files are deleted this leaves gaps
- When new files are saved the files
fill the gaps and become
fragmented
- Defragmentation software groups
fragmented files back together
- Encryption Software
- Encryption emans to scramble data in a way that it
is unreadable to anybody who doesn't have a key
to be able to unscramble this
- Data is encrypted using a
key and then decrypted
using a key
- Data is encrypted so that it
is unreadable if anyone is
to intercept it
- Backups
- Completed to ensure there is way of restoring
files/data/programs in case of computer failure
- Copies of data and/or software are taken regularly
and usually stored in a difrent location
- Ensures that if computers are stolen or
damaged in for e.g. a fire or a natural disaster
that data can be restored and a company do
not lose much money
- Backup Types