CIT0103 CBIT0103  INTERNET AND THE WEB.

UNIVERSITY EXAMINATIONS: 2017/2018
EXAMINATION FOR THE CERTICATE IN INFORMATION TECHNOLOGY/
CERTIFICATE IN BUSINESS INFORMATION TECHNOLOGY
CIT 0103/CBIT 0103: INTERNET AND THE WEB
DATE: APRIL 2018 TIME: 1 ½ HOURS
INSTRUCTIONS: Answer question ONE and any other TWO questions.

QUESTION ONE (COMPULSORY: 30 MARKS)
a). Give a description of the following: [6 Marks]
i). Computer Network
ii). MAN
iii).VPN
iv).SMTP
v). Extranet
vi). HTML
b). Clearly differentiate between TCP and UDP, and highlight two advantages for each of these
protocols. [6 Marks]
c). Due to their critical role in running of organizational operations, computer networks experience
many security threats. Discuss three security threats that are common in a typical computer network
environment. [6 Marks]
d). Zuku is an example of ISPs in Kenya. Define ISP and explain TWO key factors you would consider
when choosing an ISP provider. [6 Marks]
e). Using a browser of your choice, explain how you would bookmark the web page “www.kca.ac.ke
[2 Marks]
f). Briefly discuss the client-server structure as used in computer networks. [4 Marks]
QUESTION TWO (20 MARKS)
a). What do you understand by Protocols in the context of computer networks? [2 Marks]
b). Network protocols may be connection oriented or connectionless. Explain your understanding of
connection oriented communication mode and connectionless communication mode and give
four differences between the two. [8 Marks]
c). Explain your understanding of network topology and using diagrams, describe four types of
network topologies. [10 Marks]
QUESTION THREE (20 MARKS)
a). Web development is a key skill sought by many computer organizations when recruiting young
computer professionals. HTML is one of the fundamental tools in web development.
i). Explain your understanding of HTML? [2 Marks]
ii). Differentiate between text based editors and WYSIWYG editors and give examples for each.
[2 Marks]
iii).Differentiate between the <title> tag and the <h1> tag in HTML. [2 Marks]
iv).Write a simple HTML code to create a paragraph with the following text:
Name: Joshua Omanyo [4 Marks]
b). The Internet has revolutionized the computer and communications world like nothing before.
i). Describe your understanding of the Internet. [2 Marks]
ii). Give a brief history of how the internet came to be. [4 Marks]
iii).Highlight four key services provided by the internet. [4 Marks]
QUESTION FOUR (20 MARKS)
a). What is your understanding of the OSI Model in computer networks? [2 Marks]
b). Compare and contrast the OSI Model and TCP/IP Model. [8 Marks]
c). Discuss five key advantages of Client-Server model of networking. [10 Marks]
QUESTION FIVE (20 MARKS)
a). In today’s business world, emails have become the main mode of communication.
i). What do you understand by an email? [2 Marks]
ii). Describe four key ways in which an email is of advantage to an organization as opposed to
traditional ways of communication. [4 Marks]
iii).Explain your understanding of the difference between ‘CC’ and “BCC” options of recipients
when sending an email. [4 Marks]
b). Use a diagram to illustrate and briefly discuss the information security (CIA) triad.
[7 Marks]
c). Explain the role of a router in the management of Internet traffic. [3 Marks]

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