01d- Data Portability

Question 1

What is Data Compression?

Answer 1

Data Compression is used to convert digital data to as small a size as possible while still maintaining the quality of the data.

Question 2

What are the advantages of Data Compression?

Answer 2

• Reduces the high volume of storage required
• Most Bandwidths can handle the data being sent

Question 3

What are disadvantages of Data Compression?

Answer 3

Time will have to be taken to compress and decompress the file.

Question 4

What is Lossy Compression?

Answer 4

Lossy compression involves discarding some data in order to process in such a way that the data can’t be reinstated.

E.g. JPG images, MP3 audio files

Question 5

What is Lossless Compression

Answer 5

Enables original file to be fully restored to its original state.

E.g. Zipping files

Question 6

What is Data Portability?

Answer 6

The ability to transfer data from one computer to another or from one software application to another without having to re-enter the data.