BIT 112 INFORMATION TECHNOLOGY FUNDAMENTALS

 BIT 112 INFORMATION TECHNOLOGY FUNDAMENTALS

QUESTION ONE (24 MARKS)

a)    What is your understanding of the term computer system?     (2 marks) 

b)    Define the following terms as used in data communication and internet:

                               i.            Internet

                             ii.            Intranet

                          iii.            Extranet

                           iv.            World wide web                                                                            (4 marks)

c)     Computers are increasingly becoming powerful and useful tools. This is attributed to particular characteristics. Explain TWO of such characteristics                                                                                                                        (4marks)

d)    Computers can classified by size into Supercomputers, mainframes microcomputers. What is the functional difference between each of the four types of computers?                                                                                                 (4 marks)

e)     

                               i.            Give your understanding of the term generation as used in Computer generations.                                                                        (2 marks)

                             ii.            Highlight TWO key hardware and TWO key software technologies of First-Generation Computers.                                       (2 marks)

f)      Data processing activity is a very important aspect in any organization of any size or nature because it generates good information for decision making. Give THREE characteristics of a good information.                                              (3 marks)

g)    What is the decimal equivalent of 110.101₂                                     (3 marks)

h)   Computer Software can be broadly classified into System and Application Software. With appropriate examples, differentiate between the two software categories.                                                                                             (2 marks)

i)      Give TWO advantages and TWO disadvantages of Speech Synthesizers.                                                                                                                         (4 marks)

QUESTION TWO (18 MARKS)

a)    State THREE characteristics of positional number system?   (3 marks)

b)    Multiply the binary numbers 1010₂ and 1001₂                              (6 marks)

c)    
Given 514. AF₁₆ ----> X.Y₁₀, Find the values of X and Y.                  (4 marks)

d)    Using signed magnitude method, show how a computer represents 17 and -17.                                                                                                  (3 marks)

e)    Subtract 0111000₂ from 1011100₂ using 1C method.       (4 marks)

 

QUESTION THREE (18 MARKS)

a)    What is meant by the term operating system?                              (2 marks)

b)    Discuss THREE parameters for measuring operating system’s performance.                                                                                         (6 marks)

c)     Discuss FOUR functions of the Operating system in a computer system (4 marks)

d)    Differentiate between the following concepts:

                               i.            Batch Processing and Multiprogramming.                         (2 marks)

                             ii.            Multi-Tasking and Multithreading.                                       (2 marks)

 

QUESTION FOUR (18 MARKS)

a)    Devices that transform information from machine readable form into a form understandable by the human user are regarded as output devices:

                               i.            Can an input device operate as an output device at the same time?                                                                                               (2 marks)

                             ii.            Discuss TWO broad categories of outputs.                        (4 marks)

                          iii.            Why would one prefer to use a Liquid Crystal Display (LCD) over a Cathode Ray Tube (CRT)                                                 (4 marks)

                           iv.            Explain the functional differences between the following output units:

a)                      Screen Image Projectors and Computer Output on Microfilm                                                                         (2 marks)

b)                      Voice Response System and Speech Recognition System.                                                                               (2 marks)

                                                                                     

b)    Give THREE operational differences between impact and non-impact printers.                                                                                                           (3 marks)

c)     State THREE advantages of a networkable printer over a stand-alone printer.                                                                                                  (3 marks)

 

 

QUESTION FIVE (18 MARKS)

a)    You are the network administrator in your organization. Your organization is in the process of implementing a network infrastructure:

                               i.            State FOUR reasons that would drive an organization to implement a networked infrastructure.                                (4 marks)

                             ii.            Explain FOUR factors you would consider before adopting any network design strategy.                                                    (8 marks)

                          iii.            Under what circumstance would you opt for Mesh topology over Bus Topology                                                                          (4 marks)

b)    Explain TWO advantages of implementing a hybrid network topology?                                                                                                                  (4 marks)