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Access control methods

Alison's free online information technology (IT) courses introduce you to access control methods. Cryptography plays a vital role in modern digital communication systems. Cryptographic methods allow the encryption and decryption of messages sent across digital communication networks. You will understand the functions of a computer, gain a greater knowledge of computer software and hardware, have the skills to manage multiple files effectively, and learn how to use email and word processing applications These tasks will help you to accomplish your daily goals.

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