Encryption Quiz - Open Note

What is encryption?

• A process of altering data to make it appear random

• A method of storing data in binary format

• A way of compressing data to save storage space

• A technique for transmitting data over the internet

What is a cryptographic key?

• A set of mathematical values used to encrypt and decrypt data

• A physical key used to lock and unlock encrypted data

• A string of characters used to represent binary data

• A protocol for secure communication over the internet

Why is data encryption necessary?

• To ensure privacy and protect sensitive data

• To increase the speed of data transmission

• To prevent data breaches caused by weak passwords

• To comply with industry and government regulations

What is a brute force attack?

• An attempt to determine the decryption key by making millions of guesses

• A method of encrypting data using a combination of substitution and transposition ciphers

• A protocol for secure communication over the internet

• A cryptographic algorithm used for data encryption

How is encryption used to keep the internet secure?

• By using the HTTPS protocol and encryption algorithms like TLS

• By implementing strong passwords and user authentication

• By encrypting data at rest and in transit

• By conducting regular security audits and vulnerability assessments

What is a substitution cipher?

• A cipher that substitutes different characters for each character in the original text

• A cipher that rearranges the order of characters in the plaintext

• A cipher that combines both substitution and transposition techniques

• A cipher that uses a mathematical algorithm to encrypt and decrypt data

What is a transposition cipher?

• A cipher that rearranges the order of characters in the plaintext

• A cipher that substitutes different characters for each character in the original text

• A cipher that combines both substitution and transposition techniques

• A cipher that uses a mathematical algorithm to encrypt and decrypt data

What is symmetric encryption?

• A type of encryption where the same key is used for both encryption and decryption

• A type of encryption where different keys are used for encryption and decryption

• A type of encryption that uses a combination of substitution and transposition ciphers

• A type of encryption that is resistant to brute force attacks

What are encryption algorithms?

• Software routines that process data in a specific way

• Keys used for symmetric encryption

• Methods for encrypting and decrypting data

• Protocols for secure communication over the internet

What are the three data states?

• Data at rest, data in transit, data in use

• Data encrypted, data decrypted, data encoded

• Data stored, data transmitted, data received

• Data encrypted, data decrypted, data hashed