Computer ScienceCryptography
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Cryptography and Number Systems Quiz

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#1

What does the acronym RSA stand for in the context of cryptography?

Rivest-Shamir-Adleman
Explanation

Named after its inventors.

#2

In the hexadecimal number system, what is the decimal equivalent of the hexadecimal number A?

10
Explanation

A represents 10 in decimal.

#3

What is the binary representation of the decimal number 25?

10011
Explanation

Binary representation of decimal number.

#4

Which of the following is a symmetric key encryption algorithm?

AES
Explanation

Symmetric encryption standard.

#5

What is the base of the hexadecimal number system?

16
Explanation

Hexadecimal is base-16.

#6

Which cryptographic algorithm is commonly used for both encryption and authentication?

HMAC (Hash-based Message Authentication Code)
Explanation

Combines cryptographic hash functions for integrity.

#7

What is the purpose of the Diffie-Hellman key exchange algorithm?

To securely exchange cryptographic keys over a public channel
Explanation

Establishes shared secret over an insecure channel.

#8

Which type of attack involves trying every possible key until the correct one is found?

Brute force attack
Explanation

Exhaustive trial and error method.

#9

What is the result of XOR operation between 1 and 0?

1
Explanation

Exclusive OR operation result.

#10

Which of the following encryption algorithms is used in SSL/TLS protocols for secure communication over the Internet?

RSA
Explanation

Asymmetric encryption.

#11

Which of the following is not a symmetric encryption algorithm?

RSA (Rivest-Shamir-Adleman)
Explanation

Asymmetric encryption.

#12

What is the purpose of a one-time pad in cryptography?

To ensure perfect secrecy
Explanation

Unbreakable encryption method.

#13

What is the term for the process of converting plaintext into ciphertext?

Encryption
Explanation

Conversion to unreadable form.

#14

What is the significance of the P versus NP problem in the context of cryptography?

It relates to the efficiency of certain cryptographic algorithms
Explanation

Complexity of cryptographic problems.

#15

What is the difference between steganography and cryptography?

Steganography hides the existence of the message, while cryptography hides the content of the message
Explanation

Concealing vs. encoding message.

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