Examination Question Paper Module Code: CD4101 Component No.: Formative Assessment Paper Type: EXAM Module Title: Information Systems Modelling and Design Term: Term 1 Level: 4 Credits: 30 Date: N/A Time: N/A Duration: N/A minutes Instructions to Candidates: 1. On each answer sheet write your full 7 digit student enrolment number as it appears on your student ID card. 2. Do not write your name on the answer sheets, only your student enrolment number. 3. Please mark your answers clearly and legibly on the answer sheets. 4. Do not turn over until instructed to do so by the invigilator. 5. If you require clarification, please speak with an invigilator. 6. For this exam you will require the following: Calculators: NO Case study NO Graph paper: NO Formula sheet NO Pencil or Pen: YES 7. Answer all questions in both Part I and Part II, as follows: Part I: For multiple choice questions, circle the letter of the correct answer or answers. For True/False questions, place an ‘X’ in the space for the correct answer. For short answer questions, write your answer in the space provided. Part II: Write your answer for the question in the space provided on the question sheet. Enrolment No.: Part I 1. (1 point) Consider the following UML diagram: This diagram is an example of a: A. Use-case diagram. B. Class diagram. C. Sequence diagram. D. Component diagram. E. Activity diagram. 2. (1 point) In a three-layer architecture, in which layer would a database be found? A. Presentation layer. B. Business logic layer. C. Persistence layer. 3. (1 point) In a three-layer architecture, in which layer is the user interface found? Page 1 of 5 Question 3 continues on the next page. Enrolment No.: A. Presentation layer. B. Business logic layer. C. Persistence layer. 4. (1 point) In the context of risk analysis, what is exposure? A. The probability that a risk will become a problem, multiplied by the impact of the risk. B. The number of people that will be affected if a risk becomes a problem. C. The number of risks that have probability higher than a certain value. D. The cost that will be incurred if a risk becomes a problem. 5. (1 point) In the Waterfall model, what normally happens when one of the steps cannot be completed because of errors or oversights? A. The previous step is revisited and corrections made. B. The project continues as planned and errors are fixed at the end. C. The development is abandoned completely. D. The personnel involved are replaced by better or more experienced staff. E. None of these choices. Page 2 of 5 Please proceed to the next page. Enrolment No.: Part II 6. (5 points) Consider the following scenario: Luke Bissee is late for class as he arrives to the lecture hall. Not to worry, Professor Knowall is lenient about late arrivals, so Luke knows he can still attend the lecture. Luke swipes his card at the reader, which acknowledges his presence. Luke takes a seat in the front row and soon falls asleep as Prof. Knowall’s lecture goes on. Draw a sequence diagram representing the events in this scenario. Page 3 of 5 Please proceed to the next page. Enrolment No.: 7. (5 points) What is the advantage of separating business logic and presentation into separate layers? Page 4 of 5 Please proceed to the next page. Enrolment No.: 8. (5 points) In a three-layer architecture, which layer would the prompts displayed on the screen of an ATM be part of? Explain. Page 5 of 5 End of Paper.
