Data Processing Paper 2, May/June 2015

Question 1

  1. (i) Define an operating system
  2. (ii) State two functions of an operating system
    (iii) List two differences between an operating system and application software

  3. Starting from the Save As dialogue box, outline the steps involved in passwording a document in a word processing package.

 

Observation

The expected answers were:
(a) (i) Operating system is a suite/set(collection) of programs/software that controls and   coordinates/manages the hardware and software of a computer system.  
OR
A set of programs that act as interface between the user and the computer (Hardware & Software)
OR
A set of programs that controls and manages computer resources/components and provides other useful services.
[Candidate’s response must include programs/software and any other keyword]
[1 mark]

(ii)

  1. File management
  2. Storage management
  3. Input-Output/peripheral management
  4. Serves as an interface between the user and the computer/Hardware & Software
  1. Protects the system from errors and failures  
  2. Access control/Security
  3. Processor Management
  4. Booting/starting up the computer
  5. File Management
  6. Resource Management  
  7. Task/Process Management
  8. Provides virtual machine                                  

 

(iii) Differences between operating system and application software include:

S/N

Operating system

Application software

1.

Controls the functioning of the computer/management of computer resources/system software

Performs specific task(s)

2.

It is independent of Application Software/Does not depend on the application software

Depends on the operating system to operate

3

Can boot the computer

Cannot boot the computer/

4

Provides services to computer

Provides services to the user

                                                                                                                                   

(b)

  1. From the Save As dialog box, click on Tools
  2. Click on General/Security option
  3. Type in the password and click okRetype the password and click ok                                             

OR

  1. Click on file, click on Info
  2. Click on Protect document, Encrypt with password
  3. Type in the password and click ok Retype the password and click ok   
The candidates mixed up the answers by wrongly stating ideas or points. Candidates’ response using system in place of software/program should be discouraged. Passwording of documents in MS word should be taught properly and  practically.