The interleaving algorithm of Fig. 7-60 has the advantage of being able to survive an occasional lost packet without introducing a gap in the playback. However, when used for Internet telephony, it also has a small disadvantage. What is it?
Answer to relevant QuestionsDoes voice over IP have the same problems with firewalls that streaming audio does? Discuss your answer.Break the following monoalphabetic cipher. The plaintext, consisting of letters only, is a well-known excerpt from a poem by Lewis Carroll. kfd ktbd fzm eubd kfd pzyiom mztx ku kzyg ur bzha kfthcm ur mftnm zhx mfudm zhx ...Design an attack on DES based on the knowledge that the plaintext consists exclusively of upper case ASCII letters, plus space, comma, period, semicolon, carriage return, and line feed. Nothing is known about the plaintext ...Consider the use of counter mode, as shown in Fig. 8-15, but with IV = 0. Does the use of 0 threaten the security of the cipher in general?Can IPsec using AH be used in transport mode if one of the machines is behind a NAT box? Explain your answer.
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