Multiple Choice
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
Correct Answer:
Verified
Q20: A limitation of signature-scanning virus detection is
Q21: Which of the following is a limitation
Q22: Which of the following is not true
Q23: A resident virus is a virus that
Q24: _ is not required for secure transactions.<br>A)
Q26: How is authentication in Kerberos handled?<br>A) With
Q27: Access rights define how various _ can
Q28: The Secure Sockets Layer does not _.<br>A)
Q29: A common software exploitation is a _.<br>A)
Q30: Trojan horse viruses are difficult to detect