FUNDAMENTALS OF COMPUTER

APPLICATION SYSTEM SOFTWARE

SYSTEMS SOFTWARE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
To scramble data so that it is unreadable is a form of ____ ?
A
Encryption
B
Defragmentation
C
Back-up
D
Compression
Explanation: 

Detailed explanation-1: -Encryption is the process of taking plain text, like a text message or email, and scrambling it into an unreadable format-called “ciphertext.” This helps protect the confidentiality of digital data either stored on computer systems or transmitted through a network like an internet.

Detailed explanation-2: -An encryption algorithm is the method used to transform data into ciphertext. An algorithm will use the encryption key in order to alter the data in a predictable way, so that even though the encrypted data will appear random, it can be turned back into plaintext by using the decryption key.

Detailed explanation-3: -There are two main kinds of data encryption: symmetric encryption and asymmetric encryption. In symmetric encryption, a single, private password both encrypts and decrypts data. Asymmetric encryption, sometimes referred to as public-key encryption or public-key cryptography, uses two keys for encryption and decryption.

Detailed explanation-4: -Encryptionis the process of “scrambling” data to make it unreadable and only able to be read again by a person who has a code or decryption key. Without that key, the message is in “ciphertext” which renders it unusable.

Detailed explanation-5: -Encryption is the method by which information is converted into secret code that hides the information’s true meaning. The science of encrypting and decrypting information is called cryptography. In computing, unencrypted data is also known as plaintext, and encrypted data is called ciphertext.

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