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Computer Networks: Cryptography MCQs
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Computer Networks: Cryptography MCQs
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25 Questions

1. In symmetric-key cryptography, the key locks and unlocks the box is
2. The substitutional ciphers are
3. RSA stands for
4. The cipher which uses the exclusive-or operation as defined in computer science is called
5. The Advanced Encryption Standard (AES) was designed
6. Symmetric-key cryptography started thousands of years ago when people needed to exchange
7. The ciphers of today are called
8. A substitution cipher substitutes one symbol with
9. In symmetric-key cryptography, the same key is used by
10. The cryptography algorithms (ciphers) are divided into
11. In Asymmetric-Key Cryptography, although RSA can be used to encrypt and decrypt actual messages, it is very slow if the message is
12. Cryptography, a word with Greek origins, means
13. The Data Encryption Standard (DES) was designed by
14. DES stands for
15. Data Encryption Standard (DES), was designed by
16. The ciphers of today are called round ciphers because they involve
17. ECB stands for
18. The shift cipher is sometimes referred to as the
19. In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to
20. An asymmetric-key (or public-key) cipher uses
21. The heart of Data Encryption Standard (DES), is the
22. A transposition cipher reorders (permutes) symbols in a
23. The shift cipheris sometimes referred to as the
24. In Cryptography, the original message, before being transformed, is called
25. In Cryptography, the input bits are rotated to right or left in