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Bcom 172:Fundamentals Of Computer Question Paper

Bcom 172:Fundamentals Of Computer

Course:Bachelor Of Commerce

Institution: Chuka University question papers

Exam Year:2010

INSTRUCTIONS:
1. Answer Question ONE and any other TWO questions. 2. Marks are awarded for clear and concise answers. 3. Do not write anything on the question paper.
Question One Compulsory (30 marks)
(a) Explain the meaning of the following terms with respect to the Internet
(i) Web browser (ii) URL [4 marks]
(b) Perform the following arithmetic operations
(i) 1111111 – 11111 (use one’s complement) [2 marks] (ii) 1101011 + 11011 [2 marks]
(c) Explain any two types of user interfaces. [4 marks]
2
(d) State the type of application program you would most likely use for each of the following tasks:
(i) Enter, calculate and analyze data involving numbers. [2 marks]
(ii) Create and maintain well-ordered and related records of a welfare organization. [2 marks]
(e) Give an explanation of what a programming language is and name any two highlevel languages. [4 marks]
(f) Write short notes on
(i) Relational database model [2 marks] (ii) Hierarchical database model [2 marks] (iii) Object-oriented database model [2 marks]
(g) What do you understand by the following terms?
(i) System Software [2 marks] (ii) System Programmer [2 marks]
Question Two (20 Marks)
(a) What decimal value does binary code 11011011 represent? [2 marks]
(b) Convert 432 to Hexadecimal. [2 marks]
(c) Information systems and organizations influence one another. Citing examples where necessary, justify this statement. [4 marks]
(d) List the main characteristic features of a high level language. [3 marks]
(e) Giving examples, explain the role of the following information systems;
(i) Decision support systems [3 marks] (ii) Management information systems [3 marks] (iii) Executive information systems [3 marks]
3
Question Three (20 Marks)
(a) Briefly describe the fetch-decode-execute cycle citing the components responsible for the tasks performed in each stage. [6 marks]
(b) Explain the role played by the following components within a microprocessor system:
(i) Decoder [2 marks] (ii) Current instruction register [2 marks] (iii) Cache memory [2 marks] (iv) Program counter register [2 marks]
(c) Use a very well labeled diagram to show the five main components of a computer system. [6 marks]
Question Four (20 Marks)
(a) Give two examples of search engines. [2 marks]
(b) What is the role of an input device in a computer system? [1 mark]
(c) Give a brief description of the key aspects of the following types of computer networks:
(i) LAN (ii) WAN [4 marks]
(d) Write short notes on
(i) Switch (ii) Router [4 marks]
(e) Using diagrams describe the following LAN topologies:
(i) Bus (ii) Star (iii) Ring [9 marks]
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Bcom 172:Fundamentals Of Computer Question Paper

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