This is the Online Practice Quiz in Cryptography part 3 from the book, Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you test your knowledge and skill before taking the Board Exam.
Continue Part III of the Online Practice Quiz
Quiz in Cryptography
Question 21. The ________ is the message after transformation.
Question 22. The _________ attack can endanger the security of the Diffie-Hellman method if two parties are not authenticated to each other. Question 23. The ________is the original message before transformation. Question 24. ECB and CBC are ________ ciphers. Question 25. A(n) ______ algorithm transforms ciphertext to plaintext. Question 26. In a(n) ________ cipher, a pair of keys is used. Question 27. The _______ is a number or a set of numbers on which the cipher operates. Question 28. DES is a(n) ________ method adopted by the U.S. government. Question 29. A modern cipher is usually a complex _____cipher made of a combination of different simple ciphers. Question 30. AES has _____ different configurations. Question 31. ________ DES was designed to increase the size of the DES key.