Discussion
Data Encryption Techniques are particularly used for ______.
Answer: A
Data encryption techniques are used for protecting data in a data communication system. The data is converted to a form that cannot be read without the key, so it is safe while it travels on the network and from tapping.
Encryption does not reduce the storage space (compression does that), and it does not itself improve or decrease data integrity, which is the task of checks like checksums and hashes. So the other options are wrong.
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