ExamsSCHOOL OF SCIENCE AND TECHNOLOGY

National Open University Exam Past Question – CIT 759 JUNE/JULY EXAMINATION

NATIONAL OPEN UNIVERSITY OF NIGERIA CIT 759 Micro-Computing and WWW

14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS

SCHOOL OF SCIENCE AND TECHNOLOGY JUNE/JULY EXAMINATION

 

COURSE CODE: CIT 759

COURSE TITLE: Micro-Computing and WWW TIME ALLOWED: 3hrs

INSTRUCTION: Attempt any five (5) questions

 

 

 

1.

  1. a. With appropriate examples, state and explain the components of a microcomputer syst (8 marks).
  2. List and explain the 3 types of adapter cards (6 marks)
  3. c. Calculate the number of bytes required to store “illumination” (0.5 marks)
  4. Express the exact number of bytes in 1 TB as a power of 2. (3 marks)

2.

  1. a. State the functions of the 2 components of the CP (4 marks)
  2. State the major difference between RAM and ROM (2.5 marks).
  3. State the Windows operating system shortcut keys to perform the following operations:
  4. Exit a program (2 marks)
  5. Open the help/support menu. (1 mark)

iii. Select all (2 marks)

  1. Copy (2 marks)
  2. Paste (2 marks)
  3. Briefly discuss data storage using floppy disks (4 marks)

 

  1. a. List and explain the other variants of CD-ROMs. (4 marks)
  2. List and explain the other variants of DVDs (8 marks).
  3. c. List 5 web browsers that run of Windows operating systems. (2.5 marks)
  4. List 6 web search engines. (3 marks).

 

  1. a. Explain briefly how a keyboard works (2 marks). b. Explain briefly how a mouse works (4 marks).
  2. Discuss briefly touch-pads and how they work (3 marks).
  3. List and explain briefly 2 types of optical scanners (5 marks). e. List 2 components in a voice recognition system (3.5 marks).

 

  1. a. List 2 components of hardware recognition input devices. (2 marks)
  2. List 2 display technologies used in PC systems. (2 marks)
  3. c. Complete the table below summarizing the advantages and disadvantages of the different types of monitors (8 marks)

 

CHARACTERISTICS CRT MONITOR FLAT PANEL MONITOR
Size and weight    
Power consumption    
Potential viewing problems    
Price    

 

 

  1. Briefly discuss the following:
  2. Ink jet printers (3 marks)
  3. Dot-matrix printers (2.5 marks)

 

 

  1. a. List an explain 5 common image file formats/types their extensions and their meanings (10 marks).
  2. List and explain 3 sound file formats their extensions and their meanings (6 marks).
  3. List 2 common video file formats stating their extensions and their meanings (1.5 marks).

Related Articles

3 thoughts on “National Open University Exam Past Question – CIT 759 JUNE/JULY EXAMINATION”

Leave a Reply to Jamiu Cancel reply

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

Close