ExamsSCHOOL OF SCIENCE AND TECHNOLOGY

National Open University Exam Past Question – CIT711 JANUARY/FEBRUARY 2013 EXAMINATION

NATIONAL OPEN UNIVERSITY OF NIGERIA CIT711 Computer Fundamentals

14-16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS SCHOOL OF SCIENCE AND TECHNOLOGY JANUARY/FEBRUARY 2013 EXAMINATION

 

 

Course Code: CIT711 Time:  2½ hrs  
 

Course Title:

 

Computer Fundamentals

 

Course Credit Unit:

 

3

 

Instruction:                Answer any FIVE questions. Each question carries 14 marks

 

 

1a)        Briefly discuss the following memory types        ) 9 marks

(i)RAM (ii) ROM           (iii) PROM       (iv) EPROM

 

  1. b) Compare and contrast the parallel and serial interface ) 5marks

 

2a)        Write short notes on the following storage devices: (9½ marks) (i)         Magnetic Disk (ii) Magnetic Tape        (iii) CD-ROM

  1. b) compare the storage devices in (2a) above based on the following parameters: (4½ marks)
  2. i) storage capacity ii)   access mode

iii)  access time performance of storage iv)  physical nature

 

3a)        Differentiate between the CRT and LCD display            ) 6 marks b)           Compare and contrast the laser and Dot matrix printers ) 6 marks c) What is the advantage of using an array?           ) 2 marks

 

4a)        Briefly describe the following concepts  (12 marks)

(i)         Pipelining         (ii) Vector Processing   (iii) Parallel Processing

  1. b) Give two functions of a looping statement in a programming language? ) 2 marks

 

5a)        Write briefly on the following:  ) 9 marks

(i)         Local Area Networks

(ii)        Metropolitan Area Networks

(iii)       Wide Area Networks

  1. b) give the difference(s) between a subroutine and a function?         ) 5 marks

 

6a)        List the difference(s) between network operating systems and distributed operating systems

) 7½ marks

  1. b) Describe the following: ) 4 marks

(i) MODEM                  (ii) Full Duplex

  1. c) In the context of data transmission, define Cryptography (2½ marks)

 

6a)        With the aid of a diagram, outline the layers of the OSI reference model )7 marks b)            State the function(s) of each layer of the model                ) 7 marks

YOU MAY ALSO LIKE  National Open University Exam Past Question – AEM 505 October, 2013 Examination

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Close