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GCE MAY 2010 : A2 1 Information Systems - Revised

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Sp N ec e ifi w ca tio n Centre Number 71 Candidate Number ADVANCED General Certificate of Education 2010 Assessment Unit A2 1 assessing Module 3: Information Systems AW211 Information and Communication Technology [AW211] TUESDAY 18 MAY, AFTERNOON TIME 2 hours. INSTRUCTIONS TO CANDIDATES Write your Centre Number and Candidate Number in the spaces provided at the top of this page. Write your answers in the spaces provided in this question paper. Answer all six questions. INFORMATION FOR CANDIDATES The total mark for this paper is 120 including a maximum of 5 for quality of written communication. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. For Examiner s use only Question Marks Number 1 2 3 4 5 6 110012 QWC Total Marks 6078 1 Parity checking and encryption are used when data is transmitted over a peer-to-peer network. Examiner Only Marks Remark (a) Describe the main features of data encryption. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] (b) Describe the main features of a peer-to-peer network. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] (c) Explain how parity can be used to detect and correct errors in data transmission. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [6] 6078 2 [Turn over Communication standards have an important role to play in networked systems. Examiner Only Marks Remark (d) Explain why communication standards are required. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [2] (e) Describe the main features of the Open Systems Interconnection (OSI) model ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [6] 6078 3 [Turn over 2 A company has purchased a widely used ICT application. A hard copy of the user guide is available for employees. Examiner Only Marks Remark (a) Describe three of the main contents of a typical user guide. 1. ____________________________________________________________ ______________________________________________________________ ______________________________________________________________ 2. ____________________________________________________________ ______________________________________________________________ ______________________________________________________________ 3. ____________________________________________________________ ______________________________________________________________ ___________________________________________________________ [6] (b) Identify four advantages of using an on-line user guide rather than a hard copy. 1. ____________________________________________________________ ______________________________________________________________ 2. ____________________________________________________________ ______________________________________________________________ 3. ____________________________________________________________ ______________________________________________________________ 4. ____________________________________________________________ ___________________________________________________________ [4] 6078 4 [Turn over (c) Explain how employees could get help from a user group. Examiner Only Marks Remark ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] (d) Explain how ICT can be used to help train a new employee to use the application. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] 6078 5 [Turn over 3 In a command line interface, a word processing application is opened as shown below. Examiner Only Marks Remark C:\>RUN WORDPRO.EXE (a) By referring to this example, explain what is meant by A prompt ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [2] A parameter ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [2] (b) Describe two ways in which an application can be opened using a typical GUI. 1. ____________________________________________________________ ______________________________________________________________ ______________________________________________________________ 2. ____________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] 6078 6 [Turn over (c) Computer users are sometimes provided with ergonomic keyboards. Examiner Only Marks Remark Explain what is meant by ergonomics in this case. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] (d) Apart from ergonomics, name and explain one other factor which influences human computer interaction. Factor _______________________________________________________ Explanation ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] 6078 7 [Turn over 4 Employees with access to a company s network must sign an acceptable use policy. Examiner Only Marks Remark (a) Describe the main contents of a typical acceptable use policy. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] (b) The company must comply with Data Protection legislation. Name and describe two other laws relating to ICT. Law _________________________________________________________ Description ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Law _________________________________________________________ Description ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [6] 6078 8 [Turn over (c) ICT professionals may become members of the Association for Computing Machinery (ACM). Examiner Only Marks Remark Describe two benefits of membership of the ACM. 1. ____________________________________________________________ ______________________________________________________________ ______________________________________________________________ 2. ____________________________________________________________ ______________________________________________________________ ___________________________________________________________ [4] (d) The increasing use of ICT has resulted in changing work patterns. Describe the impact of ICT on employees working from home. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [6] 6078 9 [Turn over 5 A supermarket uses a relational database for its stock control. Examiner Only Marks Remark (a) In the context of a relational database, explain what is meant by Data redundancy ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [2] Data independence ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [2] (b) Two of the entities in the database are PRODUCT and SUPPLIER. Each product may be supplied by more than one supplier. Each supplier may supply more than one product. Draw an entity relationship (ER) diagram for these entities that does not contain a many-to-many relationship. Indicate clearly the key fields. [8] 6078 10 [Turn over (c) The supermarket uses a Management Information System (MIS) and a decision support system. Examiner Only Marks Remark (i) Explain what is meant by a MIS. __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ _______________________________________________________ [4] (ii) Describe the main features of a decision support system. __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ _______________________________________________________ [4] 6078 11 [Turn over 6 (a) An information system can be developed using prototyping. Examiner Only Marks Remark Describe the main features of prototyping. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ___________________________________________________________ [6] (b) Identify four advantages of off-the-shelf software over a custom-built package. 1. ____________________________________________________________ ______________________________________________________________ 2. ____________________________________________________________ ______________________________________________________________ 3. ____________________________________________________________ ______________________________________________________________ 4. ____________________________________________________________ ___________________________________________________________ [4] 6078 12 [Turn over (c) CASE tools can be used during system development. Examiner Only Marks Remark Write a report explaining how the use of CASE tools can lead to Improved software quality Reduced development time __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ _______________________________________________________ [9] 6078 13 [Turn over Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright holders may have been unsuccessful and CCEA will be happy to rectify any omissions of acknowledgement in future if notified. 110012

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Additional Info : Gce ICT May 2010 Assessment Unit A2 1, Module 3: Information Systems - Revised
Tags : General Certificate of Education, A Level and AS Level, uk, council for the curriculum examinations and assessment, gce exam papers, gce a level and as level exam papers , gce past questions and answer, gce past question papers, ccea gce past papers, gce ccea past papers

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