Cryptography Concepts Quiz

What is the purpose of cryptography?

• To replace a character with a different character.

• To change the order of items in data.

• To analyze encrypted messages and return them to plaintext.

• To scramble data so that it looks like babble to anyone except those who know the trick to decoding it.

What is the term for decrypted or unencrypted data?

• Ciphertext

• Algorithm

• Plaintext

• Cryptanalysis

Which method of encryption involves replacing a character with a different character?

• Transposition

• Substitution

• Shift cipher

• Monoalphabetic ciphers

What is the term for data that has been encrypted?

• Ciphertext

• Plaintext

• Cryptanalysis

• Cryptography

Which method of encryption involves changing the order of items?

• Shift cipher

• Substitution

• Transposition

• Monoalphabetic ciphers

Which historic cipher uses an algorithm and a key to offset the alphabet?

• Caesar Cipher

• Shift Cipher

• Scytale cipher

• Vigenère Cipher

What is the term for breaking a substitution cipher?

• Transposition

• Frequency analysis

• Monoalphabetic ciphers

• Cryptanalysis

What is the main advantage of the One-Time Pad encryption method?

• Hard to generate truly random numbers

• Dependent on random pad generation

• Requires large pads

• Unbreakable

Which method of encryption involves changing the order of letters?

• Transposition

• Shift cipher

• Substitution

• Monoalphabetic ciphers