(Last Updated On: December 21, 2017)
This is the Online Practice Quiz in Cryptography part 1 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.
Start Part I of the Online Practice Quiz
Quiz in Cryptography
Question 1. In an asymmetrickey cipher, the sender uses the__________ key.
Question 2. A(n) ______ is a keyless substitution cipher with N inputs and M outputs that uses a formula to define the relationship between the input stream and the output stream.
Question 3. DES uses a key generator to generate sixteen _______ round keys.
Question 4. The Caesar cipher is a _______cipher that has a key of 3.
Question 5. _________ ciphers can be categorized into two broad categories: monoalphabetic and polyalphabetic.
Question 6. The _______ cipher is the simplest monoalphabetic cipher. It uses modular arithmetic with a modulus of 26.
Question 7. DES has an initial and final permutation block and _________ rounds.
Question 8. In a(n) ________, the key is called the secret key.
Question 9. A(n) _______ algorithm transforms plaintext to ciphertext.
Question 10. The DES function has _______ components.

More Practice Quiz in Cryptography
Practice Quiz Part 1
Practice Quiz Part 2
Practice Quiz Part 3
Complete Practice Quiz in Data Communications and Networking
Note: After taking this particular quiz, you can proceed to check all the topics.