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Autumn Examinations 2010/ 2011
Exam Code(s) 3BF Exam(s) 3 rd Business Information Systems
Module Code(s) MS 216 Module(s) Networks & Communications
Paper No. 1 Repeat Paper
External Examiner(s) Dr. D. Ivanov Internal Examiner(s) Dr. T. Acton Dr. A. Nachev
Instructions : Answer any three questions. All questions carry equal marks.
Duration 2hrs No. of Pages 4 (incl. cover) Discipline(s) Business Information Systems Course Co-ordinator(s)
Requirements : MCQ Release to Library: Yes No Handout Statistical/ Log Tables Cambridge Tables Graph Paper Log Graph Paper Other Materials
3 rd^ YEAR BUSINESS INFORMATION SYSTEMS
MS216 NETWORKS AND COMMUNICATIONS
Time Allowed: TWO hours
Answer any THREE questions. All questions carry equal marks.
Q1.
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 be 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. (v) Search engines.
(33 Marks)
Q2. Discuss the way in which e-mail messages are passed from one computer user to another. You should include (but not be limited to) a brief description of the following: (i) E-mail components in terms of a client–server application. (ii) E-mail delivery stages. (iii) E-mail protocols: SMTP, POP3, IMAP4, and MIME. (iv) Spam and anti-spam techniques.
Use diagrams and examples to support your answer.
(33 Marks)
Q5.
(a) Most small and medium sized businesses, establishing internal Web hosting capabilities find that it is a larger investment than outsourcing. The major cost of in-house management of a website is an in-house IT staff (consisting of at least one person), equipment, software, initial set up costs, etc. By outsourcing web hosting services, companies can expect a 25 to 80 percent cost savings over in-house solutions.
You are required to discuss the above statement. In your answer discuss different options for outsourcing a Web server, such as colocation, dedicated server, shared Web hosting, etc. Outline advantages and disadvantages. (16 Marks)
(b) The need for fast and better Internet connections changed the options available to consumers and businesses. There are various connection types on offer from different internet service providers. Describe the following types of connection discussing their features, components, equipment, advantages, and disadvantages:
i) Digital Subscriber Line (DSL). ii) Leased lines iii) Wireless Internet. (17 Marks)
