April 2000
NI222 : NETWORKS AND THE INTERNET

QUESTION 2

Total Marks: 15 Marks

• Question 1
• Question 3
• Question 4
• Question 5
• Cover Page

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SUGGESTED SOLUTIONS
for Question 2

(a)What are the two mail protocols standards currently in use?How do you overcome the compatibility problems between them.[3 marks ]

(b)Explain a typical FTP session with a suitable diagram of FTP architecture.[4 marks ]

(c)Discuss the potential security problems you may come across within SMTP and MIME. [4 marks ]

(d)Direct Multicast support at the transport level can greatly enhance applications such as Web television.Explain how is this currently implemented n the Internet and why this approach is not efficient.Also suggest the most efficient way of providing such a service.[4 marks ]