Code Breaking and Cryptography Quiz

What was the main reason for the increased importance of cryptography during the invention of radio?

• To reduce the cost of communication

• To enhance communication speed

• To protect messages flying through the air

• To improve radio signal quality

Who established the first dedicated code-breaking unit in America?

• The United States Military

• George Fabian

• William Friedman

• Elizabeth Friedman

What is the primary difference between a code and a cipher?

• A code is used for military purposes, while a cipher is for civilian use.

• A code is more secure than a cipher.

• A code replaces words with numbers, while a cipher uses symbols.

• A code replaces words or phrases with other words or phrases, while a cipher changes individual letters or groups of letters.

Which method did the Friedmans use to begin decrypting messages?

• Pattern recognition

• Algorithmic decryption

• Substitution analysis

• Frequency analysis

What was the impact of the Riverbank Publications on the field of cryptology?

• They introduced cryptology as a field for linguists.

• They shifted cryptology from a language-based to a statistics-based field.

• They made cryptology accessible to the general public.

• They focused on the cultural aspects of cryptology.