System Life Cycle Revision Questions 1. A company buys a new software package. This package includes a user guide. Give two sections that should be included in this user guide. 1 ............................................................................................................................... .................................................................................................................................. 2 ............................................................................................................................... .................................................................................................................................. [2] 2. A school is to introduce a new, computerised registration system. One method of introduction of the new system is by phased implementation. Give two other methods that the school could use. Method 1 ................................................................................................................. Method 2 ................................................................................................................. [2] 3. The manager of a local cinema has employed a systems analyst to update the present administration system. Give two methods the analyst might use to collect data about the present system. Method 1 .................................................................................................................. Method 2 .................................................................................................................. [2] 1 4. A small company has decided to computerise its stock control system. (a) State two fact-finding methods that could be used to obtain information about the current system. Method 1 ........................................................................................................ ........................................................................................................................ Method 2 ........................................................................................................ ........................................................................................................................ [2] (b) Explain why parallel running is often chosen as a method of implementation. ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ [2] 5. A bus company uses a spreadsheet to produce its timetable. Times are entered using the 24-hour clock (hh:mm). The four pieces of data in column one have been used to test the system. Put a single tick in each row to show the type of test data being used. Test data used Normal data Extreme data Abnormal data 08:61 12:40 25:05 23:59 [4] System Life Cycle Revision Questions 6. State three different methods a systems analyst might use to collect information about a system that the systems analyst is investigating. Method 1 .................................................................................................................. .................................................................................................................................. Method 2 .................................................................................................................. .................................................................................................................................. Method 3 .................................................................................................................. .................................................................................................................................. [3] 7. A company installs a new computer system. At 9.00am on Monday the old system is switched off and the new system is put into use. (a) What name is given to this method of changeover? ........................................................................................................................ [1] (b) State two problems that may arise as a result of using this method of changeover. Problem 1 ...................................................................................................... ........................................................................................................................ Problem 2 ...................................................................................................... ........................................................................................................................ [2] 3 8. (a) There are a number of stages in the development of a new ICT system. State four tasks carried out during the design stage. Task 1 ............................................................................................................ ........................................................................................................................ Task 2 ............................................................................................................ ........................................................................................................................ Task 3 ............................................................................................................ ........................................................................................................................ Task 4 ............................................................................................................ ........................................................................................................................ [4] (b) Describe one other stage in the development of a new ICT system. ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ [3] System Life Cycle Revision Questions 9. A new computer system contains a number of components and is supplied with user documentation. (a) Details of input and output devices are included in the user documentation. Give two other items of information about the hardware which would be included in the user documentation. Item 1 ............................................................................................................ ....................................................................................................................... Item 2 ............................................................................................................ ....................................................................................................................... [2] (b) The contact details are also included in the user documentation. Give three other items that should also be included. Item 1 ............................................................................................................. ........................................................................................................................ Item 2 ............................................................................................................. ........................................................................................................................ Item 3 ............................................................................................................. ........................................................................................................................ [3] 5 10. The final stage in the system life cycle process is evaluation. Identifying the good and bad points of the final system is one part of this evaluation stage. Describe two other processes undertaken during the evaluation stage. Process 1 ................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. Process 2 ................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. [4] 11. When creating a computer system it has to be analysed, designed, developed, tested and implemented. Tick one box in each row that best describes the stage when each step would take place. Step Analysing ( ) Designing ( ) Developing, Testing and Implementing ( ) Check the system gives the required output. Create the data and file structures. Describe any validation required. Draw diagrams to describe the system processing. Interview future users about their requirements. Specify suitable hardware and software. [6] 12. The first stage in the creation of a new ICT system is to investigate the existing system. System Life Cycle Revision Questions Fill in the table below stating which investigation method would be used in the given circumstances. When appropriate Investigation method When a large number of people need to be consulted To confirm what actually happens in the present system When a few key personnel need to be consulted [3] 13. Computer programs should always be supplied with user documentation. Describe three items that should be included in this user documentation. Item 1 ....................................................................................................................... .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. Item 2 ....................................................................................................................... .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. Item 3 ....................................................................................................................... .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. [6] 14. Three methods of changing from an old system to a new one are: • Direct changeover (Big Bang) • Phased implementation • Parallel running 7 Give one advantage of using each of these methods. Direct changeover (Big Bang) .................................................................................. .................................................................................................................................. Phased implementation ............................................................................................ .................................................................................................................................. Parallel running ........................................................................................................ .................................................................................................................................. [3] 15. Cambridge Retail intends to update its computer system. The company employs a Systems Analyst to manage the introduction of the new system. (a) Describe why the computer system may need to be updated. ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... [2] (b) The analyst decides to identify the problems with the existing system. Give two methods that the analyst could use to obtain this information. Method 1 ......................................................................................................... ......................................................................................................................... [1] Method 2 ........................................................................................................ ......................................................................................................................... [1] System Life Cycle Revision Questions (c) The analyst decides to test the system using invalid data. State what should happen when invalid data is entered. ......................................................................................................................... [1] (d) The analyst produces a user guide for the new system. Give three pieces of information that should be included in the user guide. 1 ...................................................................................................................... ......................................................................................................................... [1] 2 ...................................................................................................................... ......................................................................................................................... [1] 3 ...................................................................................................................... ......................................................................................................................... [1] (e) For a period of four weeks, both the old and the new systems are kept running at the same time. Give one benefit, and one drawback, of using this type of changeover. Benefit ............................................................................................................. ......................................................................................................................... [1] Drawback ....................................................................................................... ......................................................................................................................... [1] 9 16. Normal, abnormal and extreme data is used to test a database. (a) What is meant by the term abnormal data? ........................................................................................................................ ........................................................................................................................ [1] (b) What is meant by the term extreme data? ........................................................................................................................ ........................................................................................................................ [1] (c) People using a library can borrow up to six books at a time. The library needs to test its new database for recording book details. Tick one box in each row to describe the type of data used. The first one has been done for you. Number of Books Normal ( ) Abnormal ( ) Extreme ( ) 2 1 7 6 –1 [4] System Life Cycle Revision Questions 17. A new database is being designed for a company. Give three different things that should be included in this design. 1 ............................................................................................................................... .................................................................................................................................. 2 ............................................................................................................................... .................................................................................................................................. 3 ............................................................................................................................... .................................................................................................................................. [3] 18. A new ICT system has been developed for a library. When the system has been installed it is evaluated. Explain the tasks that would be carried out as part of this evaluation. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. .................................................................................................................................. [6] 11 19. A company has a problem that they have analysed. Before the solution is implemented it must be designed. Identify four things that need to be designed. 1 ............................................................................................................................... .................................................................................................................................. 2 ............................................................................................................................... .................................................................................................................................. 3. .............................................................................................................................. .................................................................................................................................. 4. .............................................................................................................................. .................................................................................................................................. [4] System Life Cycle Revision Questions 20. A cinema is to use a computer booking system. Part of the system will accept bookings for up to 6 seats. A table of test data is drawn up to test this part of the system. Complete the table below. The first one has been done for you. TEST DATA TABLE (Number of seats - Maximum = 6, Minimum = 1) Type of data Example Expected result Extreme 1 Accept Accept Normal 4 Accept Extreme Any number greater than 6 Abnormal Reject Reject [6] 21. (a) A company is considering upgrading its existing computer system. (i) Identify one way an analyst could collect information about the current system. ............................................................................................................... ............................................................................................................... [1] 13 (ii) State two items that would be included in an analyst’s report. Item 1: .................................................................................................... ................................................................................................................ Item 2: .................................................................................................... ................................................................................................................ [2] (b) When a new system has been designed and implemented it needs to be tested. Identify two test conditions that should be checked. 1 ...................................................................................................................... 2 ...................................................................................................................... [2] (c) One way of implementing a new system is by direct changeover. Describe what the term direct changeover means. ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ [2]
