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Question
(a) Name 3 popular electronic mail access protocols?
(b)
i. What is DNS?
ii. Briefly, describe what it does and how it works?
iii. Why does DNS use a distributed approach as opposed to a single server?
(c) HTTP supports both non-persistent and persistent connections.
i. Describe each type of connection and state which HTTP protocol version supports each type?
ii. How and where is the type of connection specified in the HTTP protocol?
(d) Assume that a new application layer protocol is developed for video conferencing application. Which transport layer protocol do you think will be used and why?
(e) FTP is said to have an "out-of-band" connection. Explain what it means?
Data units at different layers of the TCP/ IP protocol suite The data unit prepared at the application layer is known a message, at the transport layer the data unit build is
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Cryptographic algorithms Cryptographic algorithms are broadly classified into two broad categories. They are stated below 1. Symmetric Encryption and 2. Asymmetric Encryptio
what is the guaranteed quality of this coursework? how many days it take for 10-12 pages? how much will be? thanks
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