D334 Introduction to Cryptography - Set 1 - Part 3

Test your knowledge of technical writing concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 41: What type of attack exploits the fact that two different inputs can produce the same hash value?

Replay attack

Collision attack

Man-in-the-middle attack

Brute-force attack

Question 42: Which of the following algorithms is a stream cipher?

AES

RSA

RC4

Blowfish

Question 43: Which of the following is a weakness of the WPA encryption protocol?

It uses a fixed initialization vector

It is vulnerable to replay attacks

It uses RC4, which is insecure

It uses 128-bit AES encryption

Question 44: Which of the following cryptographic algorithms is commonly used for key exchange?

AES

RSA

Diffie-Hellman

Blowfish

Question 45: Which block cipher mode is considered the weakest due to its lack of an initialization vector (IV)?

Cipher Block Chaining (CBC)

Electronic Code Book (ECB)

Counter Mode (CTR)

Output Feedback (OFB)

Question 46: Which of the following describes the main advantage of elliptic curve cryptography (ECC)?

ECC uses larger keys, making it more secure than RSA

ECC provides the same security as RSA with smaller key sizes

ECC is easier to implement than other public key cryptosystems

ECC provides perfect forward secrecy by default

Question 47: Which of the following describes a chosen-ciphertext attack?

The attacker selects arbitrary plaintext and observes the corresponding ciphertext

The attacker intercepts and decrypts a specific ciphertext

The attacker alters ciphertext to cause predictable errors in decryption

The attacker chooses a ciphertext and obtains its corresponding decrypted plaintext

Question 48: What is a primary risk of using a non-synchronizing cipher mode, such as Cipher Feedback (CFB)?

It is more vulnerable to brute-force attacks

If a block of ciphertext is lost, subsequent blocks cannot be decrypted

It requires longer keys than other modes

It does not provide authentication

Question 49: Which of the following is used to verify the identity of a server in an HTTPS connection?

Symmetric key

Private key

Digital certificate

Public key

Question 50: What is the primary function of a Trusted Platform Module (TPM) in cryptography?

To generate public/private key pairs

To encrypt full disk volumes

To provide hardware-level encryption and secure key storage

To store digital certificates

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