#1
What does SSL stand for?
Secure Socket Layer
Simple Security Layer
Secure System Layer
System Security Layer
#2
Which encryption algorithm is commonly used for secure communication over the Internet?
#3
Which of the following is a symmetric encryption algorithm?
#4
What does the acronym VPN stand for in the context of network security?
Virtual Private Network
Very Protected Network
Virtual Personal Network
Vital Protection Network
#5
Which cryptographic hash function is widely used for password hashing?
#6
What is steganography?
The study of secret writing
The study of codes and ciphers
The practice of concealing a message within another medium
The practice of breaking codes
#7
What is a public key used for in asymmetric cryptography?
Encryption
Decryption
Both encryption and decryption
Neither encryption nor decryption
#8
What is the Diffie-Hellman key exchange used for in cryptography?
Digital signatures
Key generation
Message authentication
Data encryption
#9
What does the term 'hash function' refer to in cryptography?
A function used for generating encryption keys
A function used for one-way encryption
A function used for symmetric encryption
A function used for public-key encryption
#10
In digital signatures, what role does the private key play?
Encrypting the message
Decrypting the message
Verifying the signature
Generating the signature
#11
What is a rainbow table in the context of cryptography?
A precomputed table used for reversing hash functions
A table used for generating public keys
A table used for symmetric encryption
A table used for generating prime numbers
#12
What is the main purpose of a digital certificate in web security?
To encrypt data
To authenticate the identity of a website
To establish a VPN connection
To perform secure key exchange
#13
What is a chosen plaintext attack in cryptography?
An attack where the attacker can only passively observe the communication
An attack where the attacker can choose plaintexts and obtain corresponding ciphertexts
An attack where the attacker modifies the ciphertext to reveal information
An attack where the attacker has access to the encryption key
#14
What is the primary purpose of a nonce in cryptographic protocols?
To prevent replay attacks
To generate encryption keys
To authenticate users
To securely transmit public keys
#15
Which encryption mode provides both confidentiality and integrity?
Electronic Codebook (ECB)
Cipher Block Chaining (CBC)
Cipher Feedback (CFB)
Counter (CTR)
#16
What is the concept of perfect forward secrecy (PFS) in cryptography?
The ability to securely transmit data over an untrusted network
The ability to generate a new session key for each session
The ability to securely store encryption keys
The ability to recover plaintext from ciphertext without the key
#17
What is the role of an initialization vector (IV) in encryption?
To add randomness to the encryption process
To securely store encryption keys
To authenticate the sender
To perform key exchange
#18
What is the main purpose of an HMAC (Hash-based Message Authentication Code)?
To encrypt data
To decrypt data
To authenticate the sender and ensure data integrity
To establish a secure connection