UNIVERSITY EXAMINATIONS: 2010/2011
FIRST YEAR STAGE EXAMINATION FOR THE DEGREE OF BACHELOR
OF SCIENCE IN INFORMATION TECHNOLOGY
BIT 1107: INTERNET TECHNOLOGY
DATE: AUGUST 2011 TIME: 2 HOURS
INSTRUCTIONS: Answer question ONE and any other TWO questions
Question One (Compulsory 30 Marks)
a) Explain How to enable or disable or delete Internet cookies using any browser (6 Marks)
b) Clearly differentiate between FTP and TELNET. (4 Marks)
c) Give a description of the following concepts
i. URL
ii. Browser
iii. Meta-Search Engines
iv. Packet switching
v. HTML (10 Marks)
d) With aid of a well labeled diagram, illustrate the five layers in the Internet protocol stack? What are
the principle responsibilities for each of these layers? (10 Marks
Question Two (20 marks)
a) Differentiate between packet switching and circuit switching (6 Marks)
b) Describe the different parts of a URL (6 Marks)
c) Some companies have set up an intranet to help support their information services. The service may
be backed by a database system that dynamically generates web pages. Explain how this differs
from the more traditional method of client/ server databasing. (8 Marks)
Question Three (20 marks)
a) Using examples to illustrate differentiate between radio and physical network media (8 Marks)
i) Explain the term “domain name service” (DNS) (3 Marks)
ii) Describe the role played by the DNS in making the internet easy to use (6 Marks)
b) Why is the number of internet top level domains deliberately kept low (3 Marks)
Question four (20 marks)
a) Describe the three parts of a computer host name. (9 Marks)
b) Techniques and tools for searching the internet are imperative if one is to find useful information on
the internet. Describe three types of searches that are common today (9 Marks)
c) Define a blog (2 Marks)
Question five (20 marks)
a) The internet’s structure is roughly hierarchical. Explain using illustrations (9 Marks)
b) Describe using illustrations one reason that can cause packet loss or delay on the internet(5 Marks)
c) Describe the following malware (6 Marks)
i) Spyware:
ii) Worm:
iii)Virus
