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Chapter 11 Quiz - Started on Tuesday 28 June 2011 08:12 PM...

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Started on Tuesday, 28 June 2011, 08:12 PM Completed on Tuesday, 28 June 2011, 09:02 PM Time taken 49 mins 58 secs Grade 91 out of a maximum of 100 ( 91 %)
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Question 1 Marks: 3 Plaintext is text that has no formatting (such as bolding or underlining) applied. Choose one answer. a. True b. False Incorrect Marks for this submission: 0/3. Question 2 Marks: 3 With most symmetric ciphers, the final step is to combine the cipher stream with the plaintext to create the ciphertext. Choose one answer. a. True b. False Correct Marks for this submission: 3/3. Question 3 Marks: 9 Match each item with a statement below: a function drawn on an X-Y axis as a gently curved line one of the first widely popular symmetric cryptography algorithms takes one character and replaces it with one character hides the existence of the data one of the most widely used asymmetric cryptography system for files and e-mail messages on Windows systems a mathematical value entered into the algorithm to produce ciphertext, or text that is “scrambled” a method used by operating systems to store, retrieve, and organize files developed by Whitfield Diffie and Martin Hellman of the Massachusetts Institute of Technology (MIT) in 1975 data that is used to describe the content or structure of the actual data Correct
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Marks for this submission: 9/9. Question 4 Marks: 3 DES is approximately 100 times faster than RSA in software and between 1,000 and 10,000 times as fast in hardware. Choose one answer. Correct Marks for this submission: 3/3.
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