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Autumn Examinations 2008
Exam Code(s) 3BF Exam(s) 3 rd^ Business Information Systems
Module Code(s) MS Module(s) Networks & Communications II
Paper No. Repeat Paper
External Examiner(s) Professor H. van der Heijden Internal Examiner(s) Professor J. F. Collins Mr. Seamus Hill
Instructions:
Answer three questions. All questions carry equal marks
Duration
2 hrs
No. of Pages Department(s) Course Co-ordinator(s)
Requirements : MCQ Handout Statistical/ Log Tables Cambridge Tables Graph Paper Log Graph Paper Other Materials
World Wide Web (WWW) or Web is a repository of information spread all over the world and linked together.
Describe how the Web functions (from a technological Perspective). Your discussion should include (but not limited to) a brief description of the following issues:
i) WWW as a distributed client-server service. ii) Web browser architecture. iii) Hyper-Text Transfer Protocol (HTTP). iv) Categories of Web documents and technologies for their creation.
(33 Marks)
Q2.
(a) The earliest and the most common store-and-forward application of the Internet is electronic mail (e-mail).
Describe how e-mail functions. Your discussion should include (but not limited to) a brief description of the following issues:
i) E-mail components in terms of a client–server application. ii) E-mail delivery. iii) E-mail protocols. iv) Web-based e-mail.
Use diagrams, where appropriate, to support your answer.
(20 Marks)
(b) File Transfer Protocol (FTP) enables to send and receive files over the Internet. FTP differs from other client-server applications in that it establishes two connections between the hosts.
Discuss the above statement. Distinguish between FTP and TFTP.
(a) With respect to Web server backup management and techniques discuss different types of backup and a possible tape rotation method. (8 Marks)
(b) Technology is developing rapidly and methods for connecting to the Internet change almost daily. Describe the following most commonly available types of connections and discuss their features, components, equipment, advantages, and disadvantages.
i) Digital Subscriber Line (DSL). ii) Cable Modem. iii) Satellite Internet.
