Download Autumn 2008/2009 Exam Info for 3rd Year BIS and more Exams Data Communication Systems and Computer Networks in PDF only on Docsity!
Ollscoil na hÉireann, Gaillimh GX_____
National University of Ireland, Galway
Autumn Examinations, 2008/
Exam Code(s) 3BF
Exam(s) 3 rd^ Business Information Systems
Module Code(s) MS216, MS
Module(s) Networks & Communications, Networks & Communications II
Paper No. Repeat Paper 1 Special Paper
External Examiner(s) Professor Hans van der Heijden Internal Examiner(s) Professor J. F. Collins Dr. A. Nachev
Instructions: Answer three questions. All questions carry equal marks.
Duration 2 hrs No. of Answer books
Requirements : Handout MCQ Statistical Tables Graph Paper Log Graph Paper Other Material
No. of Pages Department(s)
THIRD YEAR BUSINESS INFORMATION SYSTEMS
MS216 NETWORKS AND COMMUNICATIONS,
MS213 NETWORKS AND COMMUNICATIONS II
Time Allowed: TWO hours
Answer THREE questions. All questions carry equal marks.
Q1. World Wide Web (WWW) is a system with universally accepted standards for storing, retrieving, formatting, and displaying information via a client / server architecture.
Describe how WWW functions. Your discussion should include the following issues:
(a) WWW as a distributed client-server service. (b) Web browser architecture. (c) Hyper-Text Transfer Protocol (HTTP). (d) Search engine components.
(33 Marks)
Q2. 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 a brief description of the following issues:
(a) E-mail components in light of a client–server application. (b) E-mail delivery. (c) E-mail protocols. (d) Approaches to deal with spam
Use diagrams, where appropriate, to support your answer.
Q5.
(a) With respect to Web servers, answer the following questions:
i) What is the difference between in-house web server location and collocation? ii) What devices and techniques can be used to ensure fault tolerance of a web server? (12 Marks)
(b) There are various ways to link a network to the Internet. Describe the following types of connection discussing their features, components, equipment, advantages, and disadvantages:
i) Digital Subscriber Line (DSL). ii) Wireless Internet connection.
