INTRODUCTION TO COMPUTING DICT - NOV 2016

INTRODUCTION TO COMPUTING DICT

MONDAY: 22 NOVEMBER 2016

QUESTION ONE

(a)     Identify five factors that could prevent companies from using information communication Technology (ICT) in doing business. (5 marks)

(b)     Describe the following types of software

                   (i)      Freeware. (2 marks)

                 (ii)      Shareware. (2 marks)

                (iii)      Public domain software. (2 marks)

(c)     State four factors to consider when acquiring an internal hard disk of a computer. (4 marks)

(d)     Outline five characteristics of third generation computers. (5 marks)

QUESTION TWO

(a)     (i) Explain the term “computer port”. (2 marks)

(ii) Describe four examples of computer ports as used in computer systems. (8 marks)

(b)      Differentiate between a master file and a transaction file using the following criteria:

                (i)            Nature of storage. (2 marks)

              (ii)            Type of data. (2 marks)

             (iii)            Frequency of update. (2 marks)

(c)     Outline four functions of an operating system. (4 marks)

QUESTION THREE

(a)     Identify four advantages of using touch screen input devices. (4marks)

(b)     Citing an example in each case, describe two common computer user interfaces. (6 marks)

(c)     Explain two inherent disadvantages of batch processing. (4 marks)

(d)     Explain the following concepts of an information system:

                (i)            Environment. (2 marks)

              (ii)            Feedback. (2 marks)

             (iii)            Control. (2 marks)

QUESTION FOUR

(a)     In relation to the information system threats, distinguish between a “hacker” and a “cracker”. (4 marks)

(b)     Explain for reasons why information management is important to an organization. (8 marks)

(c)     Explain three criteria that could be used to classify computer memory. (6 marks)

(d)     Explain the term “teleworking” as used in information communication technology (ICT). (2 marks)

QUESTION FIVE

(a)     Outline four features of an Executive Information System (EIS). (4 marks)

(b)     Identify four devices that act as both input and output to a computer. (4 marks)

(c)     Explain three factors that determine the mode of data processing inn an organization. (6 marks)

(d)     Explain the term “virtual computing” as used in computer systems. (2 marks)

(e)     Differentiate between a Control Unit (CU) and Arithmetic Logic Unit (ALU) of a computer system. (4 marks)