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Ics2212:Operating Systems 1 Question Paper

Ics2212:Operating Systems 1

Course:Bachelor Of Information Technology

Institution: Meru University Of Science And Technology question papers

Exam Year:2014

(a) Compare and contrast manual and electronic spreadsheets. (4 Marks) (b) Outline the advantages and disadvantages of developing pre-packaged software. (6 Marks) (c) Distinguish between the input devices: (i) Trackball and Mechanical Mouse (ii) OCR and MICR (4 Marks) (d) What advantages and limitations are there in using a communications satellite? (4 Marks) (e) Carry out the following conversions: (i) D3C.F316 = ?10 (ii) ABB14= ?16 (iii) 43.76561010 = ?16 (6 Marks) (f) What are the advantages of using the database-oriented approach of organizing data? (6 Marks)
QUESTION TWO – (20 MARKS)
(a) The file organization refers to the physical arrangement of data on the backing storage devices such as tape and disks. Briefly distinguish between the indexed sequential organization and random organization giving there advantages and disadvantages. (6 Marks)
(b) System security is the protection afforded to an automated information system in order to attain the applicable objectives of the system. Outline any four objectives of system security. (4 Marks) (c) Identify the main advantages and limitations of magnetic tapes as a secondary storage device. (6 Marks) (d) Multi-programming systems are sophisticated because they require additional hardware and software features. List and explain these features. (4 Marks)
QUESTION THREE – (20 MARKS)
(a) Discuss the factors that affect the choice of file organization method. (4 Marks) (b) Security of information systems is the protections of availability, confidentiality and integrity. Outline four ways of minimizing risks of the threats to information system security. (4 Marks) (c) Choice of a topology for a computer network depends on a combination of factors. Discuss. (4 Marks) (d) Name and describe the factors affecting the speed and performance of a micro processor. (4 Marks) (e) Describe briefly the steps that a programmer has to follow in the program development lifestyle. (4 Marks)
QUESTION FOUR – (20 MARKS)
(a) Highlight the key characteristics often used to differentiate between the local area network (LAN) and Wide area Network (WAN) (6 Marks) (b) Highlight four factors that determine the selection of a computer screen. (4 marks) (c) Discuss three main functions performed by operating systems. (6 Marks) (d) Describe four types of files commonly supported in a typical file management system. (4 Marks)
QUESTION FIVE – (20 MARKS)
(a) Draw a block diagram to illustrate the basic organization of a computer system and explain the functions of the various units. (6 Marks) (b) Describe time-sharing systems giving its advantages (4 Marks) (c) Name four commonly used registers and briefly describe the functions of each. (4 Marks) (d) Why do computers use the binary number system? (2 Marks) (e) Elucidate the main advantages and current limitations of multi-core processor technology as compared to single-core processors. (4 Marks)

Ics2212:Operating Systems 1 Question Paper

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