crypography

What is the primary purpose of cryptography?

• To perform surgery
• To predict the weather
• To bake cookies
• To secure communication and data

Which of the following is not a type of cryptographic algorithm?

• Symmetric key algorithm
• Hash function
• Public key algorithm
• Asymmetric key algorithm

Which encryption algorithm is commonly used for secure data transmission over the internet?

• RSA (Rivest-Shamir-Adleman)
• DES (Data Encryption Standard)
• MD5 (Message Digest Algorithm 5)
• AES (Advanced Encryption Standard)

In symmetric-key cryptography, how many keys are used for encryption and decryption?

• 1
• 2
• 3
• 4

Which of the following is a common use of public-key cryptography?

• Encrypting data at rest
• Generating random numbers
• Secure communication over insecure channels
• Creating secure backups

What is the purpose of a digital signature in cryptography?

• To encrypt the message or document
• To increase the file size
• To decrease the security of the message
• To verify the authenticity and integrity of a message or document.

Which cryptographic technique involves hiding information within other information to conceal

• Cryptography
• Steganography
• Encryption
• Decryption

Which of the following is not a characteristic of a secure cryptographic hash function?

• Key generation
• Pre-image resistance
• Collision resistance
• Avalanche effect

What is the main advantage of using a nonce (number used once) in cryptographic protocols?

• Preventing replay attacks
• Reducing network latency
• Enhancing data confidentiality
• Increasing data integrity

Which encryption algorithm is considered to be broken and no longer secure for most applications?

• Triple Data Encryption Algorithm (TDEA)
• Data Encryption Standard (DES)
• Rivest Cipher (RC4)
• Advanced Encryption Standard (AES)