Cryptography Basics

What is the primary purpose of cryptography?

• Data compression

• Secure communication

• Increasing internet speed

• File organization

Which principle of cryptography ensures that information is accessible only to authorized users?

• Integrity

• Confidentiality

• Availability

• Authentication

Which of the following is NOT a type of cryptography?

• Symmetric encryption

• Asymmetric encryption

• Hashing

• Packet switching

Which cryptographic technique uses the same key for both encryption and decryption?

• Symmetric encryption

• Asymmetric encryption

• Hashing

• Steganography

Which encryption algorithm is considered an asymmetric algorithm?

• AES

• DES

• RSA

• Blowfish

Which of the following is an example of a cryptographic hash function?

• AES

• RSA

• SHA-256

• ECC

Which of the following encryption algorithms is currently considered secure?

• DES

• AES

• MD5

• RC4

Which cryptographic algorithm uses elliptic curves for encryption?

• AES

• ECC

• DES

• RSA

Which symmetric encryption algorithm is used in WPA2 for securing wireless networks?

• DES

• AES

• Blowfish

• RC5

Which attack exploits a weakness in a hash function to find two inputs that produce the same hash?

• Birthday attack

• MITM attack

• Chosen-ciphertext attack

• Keylogging attack