Cipher Machines Quiz

What did Joseph Henry build in the 1800s?

• A polyalphabetic cipher

• An electric device

• A hieroglyphic system

• A scytale

Which of the following is a notable Roman cipher?

• Scytale

• Hieroglyphic

• Caesar cipher

• Autokey cipher

Who was responsible for the first break of the German Army Enigma?

• Alan Turing

• Charles Bennett

• Marian Rejewski

• Gilles Brassard

What is the name of the ancient Greek cipher device mentioned in the text?

• Enigma

• Scytale

• Cipher Disk

• Caesar Cipher

What is the main topic of the text?

• Modern cryptography

• Classic cryptography

• Digital encryption

• Secret codes

What was one of the challenges of cryptanalysis of new mechanical devices?

• It was easy and quick.

• It was both difficult and laborious.

• It was only difficult.

• It was only laborious.

How did classical ciphers differ from modern encryption methods?

• They encrypted only written language texts.

• They encrypted all types of data.

• They used digital computers.

• They were more complex.

What is encryption?

• A method to store data

• A method to transmit data

• A method to hide the actual meaning of plaintext

• A method to delete data

Which of the following is a common use of encryption?

• Data storage

• Data deletion

• Data compression

• Data security

What is the final destination of the decrypted message in the diagram?

• A smartphone

• A server

• A laptop

• A printer