Introduction to computers Zetech university past papers

BIT 111/BBIT 111/COMP 100: INTRODUCTION TO COMPUTERS

 

DATE: DECEMBER 2017                                                                TIME: 2 HOURS

 

Instructions: Answer Question 1 and Any Other Two Questions.

 

 

QUESTION ONE (30 MARKS)

 

1. Distinguish between the following terms      (4 marks)
2. Internet and WWW
3. Search engine and URL

 

1. With examples for each differentiate between a formula and function as used in MS EXCEL                                                                                                                  (5marks)
2. Mention the various characteristics of the first four generations of computers       (4 marks)

 

1. Explain the following and how they relate to computers      (3 marks)

 

1. Binary number systems
2. Language translators

• ASCII

 

1. Elaborate on the following categories of operating systems   (4 marks)
2. Single user/single tasking
3. Multitasking

• Multiprocessing

1. Multithreading
2. With aid of a well labeled diagram, explain different the functional components that make up the computer system                             (5 marks)

 

1. If you are to design and implement a network for a small bicycle company, highlight three factors that can influence the choice of whether to implement a peer-to-peer or server-based network configuration                                                                                       (3 marks)
2. Describe the difference between a LAN and a WAN                (2 marks)

 

QUESTION TWO (20 MARKS)

1. Describe the following data storage and retrieval methods (6 marks)
2. Sequential storage and retrieval
3. Direct access storage and retrieval

• Indexed sequential storage and retrieval

1. Compare the first and second generation computers under the following heading
2. Memory size             (3 marks)
3. Processing speed             (3 marks)

 

1. Examine the processes that data goes through in a computer system and for each of the processes give examples of devices used (6 marks)
2. Elaborate on how the keyboard works from the time a key is pressed till the character is displayed on the monitor                                                                         (2 marks)

QUESTION THREE (20 MARKS)

1. Mention the application areas of the following application software giving examples of each                                                                                                               (3 mark)
2. Word processors
3. Spreadsheets

• Presentation package

1. Describe the functions of registers in information processing cycle                          (3 marks)
2. What do you understand by the term Network Computing Environment?                (2 marks)
3. Describe any three network topologies that can be used on a local area network.

(6 marks)

1. Describe any three sectors in which the internet has contributed to their development in Kenya                                                                                                   (6 marks)

QUESTION FOUR (20 MARKS)

1. Explain classification of computers according to the following classifications (10 marks)
2. Type and size
3. Technology

• Purpose

1. Generation
2. You have just been given a term paper to write on molecular and nanotechnology. Discuss how you would use the WWW to get information to complete such as a task                                                                          (6 marks)
3. Describe any four measures that can be taken to prevent your computer from viruses attacks                                                                                                             (4 marks)