FUNDAMENTALS OF COMPUTER

UNDERSTANDING COMPUTER FILES

FILE SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does Encryption mean?
A
The process of converting information so it cannot be understood without decrypting it using a key, especially to prevent unauthorized access.
B
Reencoding a file to consume less storage space.
C
The methods and structures that an operating system uses to organize files on a storage device like a hard drive. File systems often use directory structures to keep track of files.
D
The smallest container within a computer’s storage system that is used to store information such as data, settings, and commands used in a computer program. A file is the smallest container that can be copied, deleted, or moved within a file system.They are encoded as a single enormous list of ones and zeroes.
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Encryption involves converting human-readable plaintext into incomprehensible text, which is known as ciphertext. Essentially, this means taking readable data and changing it so that it appears random. Encryption involves using a cryptographic key, a set of mathematical values both the sender and recipient agree on.

Detailed explanation-3: -What is Decryption. Definition: The conversion of encrypted data into its original form is called Decryption. It is generally a reverse process of encryption. It decodes the encrypted information so that an authorized user can only decrypt the data because decryption requires a secret key or password.

Detailed explanation-4: -Obfuscation is defined as the transformation of a human-readable string to a string that is difficult for people to understand. In contrast to encryption, obfuscation includes no cryptographic key and the “secret” here is the operation itself.

Detailed explanation-5: -File encryption helps protect your data by encrypting it. Only someone with the right encryption key (such as a password) can decrypt it. File encryption is not available in Windows 10 Home.

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