UNIVERSITY EXAMINATIONS: 2011/2012
YEAR 1 EXAMINATION FOR THE BACHELOR OF SCIENCE IN
INFORMATION TECHNOLOGY
BIT 1107 INTERNET TECHNOLOGY
DATE: APRIL 2012 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One and Any other Two Questions
QUESTION ONE COMPULSORY
a) Briefly explain the following terms [10 Marks]
i) Gopher
ii) Logic bomb
iii)Salami attacks
iv)Salami attacks
v) Scripting languages
b) i) Describe the role played by DNS on the internet today. [6Marks]
ii) Briefly describe three searches that can be performed on the internet [6Marks]
c) i)Describe the communications software and telecommunications hardware you need to connect to
the internet. [6 Marks]
ii) Give a description of the following [2 Marks]
i. IDE:
ii. Browser
QUESTION TWO [20 MARKS]
(a) (i) What technological innovation made client/server computing possible? What impact has
client/server computing had on the Internet? [6 Marks]
(ii) What are some of the challenges of policing the Internet? Who has the final say when it comes to
content, such as with Yahoo? [4 Marks]
(iii) What is data communications? Discuss two important applications of data communications
networks in business and personal use. [6 Marks]
(b) Differentiate between a host-based network and a client-based architecture. Suppose the university
was contemplating switching from a host-based architecture to client-server architecture, what
problems would you foresee? [4 Marks]
QUESTION THREE [20 MARKS]
(a) (i) Define electronic mail (E-mail). Describe two major advantages that e-mail has over traditional
mail system. [6 Marks]
(ii) Differentiate between Intranets and Extranets, giving one example of each. [4 Marks]
(b) (i) What are the main differences between single-tier and multi-tier site architecture? [4 Marks]
(ii) Compare and contrast the various scaling methods. Explain why scalability is a key business
issue for Web sites. [6 Marks]
QUESTION FOUR [20 MARKS]
a) The Internet has the potential to provide many benefits to companies in terms of communication.
Describe FOUR processes that a business may carry out using the Internet explaining the
application involved and the benefit to the company. Outline any drawbacks involved in each
process. [10 Marks]
b) Any computer host name has three parts. Explain in details each of these parts using an example to
illustrate [10 Marks]
QUESTION FIVE [20 MARKS]
(a) By use of a well labeled diagram, discuss the main features of IPv6 in detail. [10 Marks]
(b) Compare and contrast the IPv4 and the IPv6 header fields. [6 Marks]
(c) What fields do IPv4 and IPv6 have in common? [4 Marks]
