A substitution cipher ________.
A) changes the order of the letters in the message
B) changes a message such that every occurrence of a particular letter is replaced by a different letter
C) uses a secret key to encrypt the bits of a message.
D) none of the above
Correct Answer:
Verified
Q1: Security threats can originate from _.
A) malicious
Q3: Cryptography is important because it _.
A) protects
Q4: Which of the following is not a
Q5: A key distribution center is _.
A) the
Q6: Public-key cryptography is symmetric in that _.
A)
Q7: Which of the following is not true
Q8: A user can be identified by _.
A)
Q9: Attempting all possible passwords in attempt to
Q10: Which of the following is not an
Q11: A biometric is a(n) _.
A) unique personal
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