Unit 2: Cryptography

What is the main purpose of cryptography?

• To speed up computers

• To protect information

• To compress files

• To organize data

Which type of encryption uses the same key for both encryption and decryption?

• Asymmetric Encryption

• Symmetric Encryption

• Hashing

• Digital Signatures

Which of the following is a simple example of symmetric encryption?

• Using the same lock and key for a safe

• Using two different keys for a safe

• Checking a document's integrity

• Verifying a digital signature

What type of encryption uses two keys - a public key and a private key?

• Symmetric Encryption

• Asymmetric Encryption

• Hashing

• Data Compression

What does a hash function do?

• Encrypts data

• Converts data into a fixed-size string

• Creates digital signatures

• Manages cryptographic keys

Which of the following is used to verify the authenticity of a message?

• Hash Function

• Encryption

• Digital Signature

• Key Management

What is the primary use of a digital signature?

• To compress files

• To verify the authenticity of a message

• To encrypt data

• To hash passwords

Which type of encryption method would you use if you want to share a secret key between two people?

• Symmetric Encryption

• Asymmetric Encryption

• Hashing

• Digital Signatures

What is the purpose of key management?

• To keep keys secure

• To create keys

• To use keys for encryption

• To encrypt data

What is a common use of symmetric encryption?

• Email signing

• File encryption

• Secure key exchange

• Data hashing