August 2000
NI222 : NETWORKS AND THE INTERNET

QUESTION 3

Total Marks: 15 Marks

• Question 1
• Question 2
• Question 4
• Question 5
• Cover Page

Click to access
SUGGESTED SOLUTIONS
for Question 3

(a) Explain the term routing. What essential data structure is present in every
router to make routing possible? [2]

(b) Assuming that all routers and hosts are working properly and that all software in both is free of all errors, is there any chance that a packet will be delivered to the wrong destination? Explain your answer. [2]

(c) Give three examples of protocol parameters that might be negotiated when a network connection is set-up. [3]

(d) Border Gateway Protocol version 4 and Open Shortest Path First are the
examples of hierarchical routing protocols used on the Internet. Identify the
type of hierarchical routing they represent and their purpose. [4]

(e) Explain why it is necessary to use both logical and physical addresses in
networks. [4]