UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1107 INTERNET TECHNOLOGY
DATE: APRIL, 2015 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE (Compulsory)
a) Using a diagram for each, show the difference between unicast, broadcast and
multicast. (3 marks)
b) Outline the role of protocols as applied to the Internet and name three protocols
frequently used on the Internet. (4 marks)
c) Explain how the Domain Name System allows computers to contact each other to
exchange email or display web pages. (4 marks)
d) Explain what is meant by a packet switched network and a circuit switched network.
Which of these applies to the Internet? (5 marks)
e) Differentiate between IPv4 and IPv6 Addresses (4 marks)
f) Describe at least four internet access technologies (4 marks)
g) Identify four common Internet security risks. (2 marks)
h) Identify requirements for connecting to the internet (4 marks)
QUESTION TWO
a) Internet has the following agencies
i) Internet Architecture Board (IAB)
ii) The Internet Corporation for Assigned Names and Numbers (ICANN)
iii) Internet Society (ISOC)
What are the roles played by each with regard to internet governance (3 marks)
b) Briefly explain at least three effective methods of conducting internet research.
(3 marks)
c) Briefly explain the roles of the following devices (4 marks)
i) Switch
ii) Router
iii) Hub
iv) Bridge
d) Explain the basic format of a html program (10 marks)
QUESTION THREE
a) Explain why two different search engines may provide different results when
provided with the same search term. (4 marks)
b) Discuss two reasons for using a layered protocol? (4 marks)
c) Explain Three-Way Handshake Mechanism used by TCP to terminate a Session
reliably. (6 marks)
d) What is meant by loop back address? (3 marks)
e) Briefly define the term CSS (3 marks)
QUESTION FOUR
a) Compare and contrast the OSI Model and TCP/IP Model (8 marks)
b) Describe the term internet backbone (3 marks)
c) Explain with the aid of diagrams the differences between Star, Ring and Bus
topologies. (9 marks)
QUESTION FIVE
a) Identify the three basic types of web documents and explain the advantages and
disadvantages of each type. (8 marks)
b) How many responses does a computer expect to receive when it broadcast an ARP
request? Why? (3 marks)
c) Write down an example of an URL and explain its individual parts. (4 marks)
d) Discuss atleast five uses of the internet (5 marks)
