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1 SOFTWARE ENGINEERING DECEMBER 2010 1. What are the attributes of good software ? In what ways software quality is connected with formal technical review ? 10 JUNE 2010 1. State several factors that will directly affect the cost of maintenance of a software product. 5 2. This section contains five (5) questions of five (5) marks each based on the following passage. Each question should be answered in about thirty (30) words. (5 *5 = 25 marks) A DISC TV service provider provides services to various customers. Each customer pays Rs. 300 as the monthly service charge. The service provider takes Rs. 500 as deposit and 200 for installation for new connections. These charges are revised after one year for new customer but only monthly revised charges are applicable to old customers. The service provider employees go to the customers for collection of monthly charge, to receive complaints if any and also to get the names of 4 movies the customer would like to see on the channel in a month. The receipt is issued on the spot for the monthly collection. The movie schedule is prepared for the month keeping in mind the popular movies. The channel named screen-2 shows 2 movies daily. Extra request of movies are charged separately and charges are added into the customer monthly charges bill.The customer may request for disconnection, the customer should request in advance to the service provider or employee visiting him for monthly collection. For permanent disconnect, the employee refunds the deposit after adjusting dues if any during next month visit. The refund payment is made by cheque only. The customer pays their various charges by cheque/credit card/cash. As a system designer study the above problem and design the system using OOP Concept. Draw the following UML diagram. a. Use case diagram. b. The class diagram. c. Sequence diagram. d. Activity diagram. e. State chart diagram. DECEMBER 2009 1. Read the passage given below and answer the questions that follow based on your understanding of the passage : (5 *5 = 25) A travel company is in an air-line service. It has two types of aircrafts and has three classes Executive, Business and Economy with different fare structure and facilities.Ticket bookings are computerised and done through agents or directly on phone or in person at the company s booking offices. Booking can be preponed, postponed or cancelled. Only cancellations at any time before 12 hours is charged 20%, after 12 hours but before one hour charged 40% and after that it is charged 60% but in case of loss of ticket there is no refund. Customers are offered a choice of veg, non-veg meals in flight. The customers are allowed to carry one piece of hand baggage of permitted size and weight. Excess weight baggage is charged separately. The full ticket amount is to be paid at the time of issue of ticket by cash, cheque, credit card or debit card is given for 15 days to accredited agents. Draw UML diagrams. a. Use case diagram b. Class diagram c. Sequence diagram d. Activity diagram e. State chart diagram 2. What is difference between validation and verification ? (5) 3. Define reliability and explain its importance in software development models. (5) 2 JUNE 2009 1. Explain Rapid Application Development (RAD) model with its merits. 2. Differentiate between software engineering and software reverse engineering with an example. 5 5 DECEMBER 2008 1. What are the advantages and disadvantages of prototyping model ? 2. List various types of coupling and explain three of them in detail. 5 5 JUNE 2008 1. Distinguish between a software process model and a software process. 5 DECEMBER 2007 1. Describe the waterfall model of a software process. 5 JUNE 2007 1. What are the disadvantages of water-fall model ? 5 DECEMBER 2006 1. Draw different flow charts whose cyclomatic complexity is equal to 3 ? 2. The cost estimation models are judged using both subjective and objective criteria -Justify 5 5 JUNE 2006 1. Which of the two parameters a and b in a*KDLOC^b, has more evident impact on the values of effort in the basic COCOMO model ? 5 2. How are reliability and time of delivery co-related with the cost building the software ? 5 DECEMBER 2005 1. Differentiate between software verification and validation. 2. Can we increase reliability through testing ? Comments. 5 5 JUNE 2005 1. What is the use of SRS in software testing ? 5 DECEMBER 2004 1. (a) Name three main methodologies for object oriented analysis and design. Describe the essential features of Booch methodology. 8 (b) What is Software Quality ? Can we measure software quality ? List the various factors that affect the software quality. 8 OR (a)What are Software Metrics ? Explain, how do Software Metrics help in Software Project Management ? List some important Software Metrics for Project Management. 8 (b) What are the main objectives of Software Testing ? Explain the various levels of Software Testing Signifying the importance of each level of testing. 8

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