Ordinary level 2025 Centre regional mock computer science 2
Ordinary level 2025 Centre regional mock computer science 2
Q1. a) Below are some components that play a crucial role in computer systems and computing. Briefly explain the
functions of each:
i. Antivirus Software
ii. Device Drivers
iii. Computer Ports
iv. Firewall (2 x 8 marks)
b) Briefly explain one positive role and one negative role that the following have in impacting technology today:
i. Artificial Intelligence (AI)
ii. Robotics
iii. Hacking (2 x 6 marks)
c) Software development involves a series of phases to develop and maintain software. Briefly outline two major
activities carried out in the following phases:
| i. Planning phase ii. Coding phase iii. Maintenance phase |
(2 marks) (2 marks) (2 marks) |
Q2. a) Technology is driving the world today. Users are advised to engage with technology responsibly to ensure
safety. Define the following terms related to responsible technology use:
| i) Green Computing ii) Ergonomics |
(2 marks) (2 marks) |
– Briefly explain two ways each in which users can enhance their adoption of the two concepts mentioned above.
(4 marks)
b) Perform the following binary arithmetic:
| i) Evaluate: 101101 + 111011 ii) Evaluate: 1010000 – 111011 |
(2 marks) (2 marks) |
c) Data can be entered into a computer manually or automatically:
i) Differentiate between automated data entry methods and manual data entry methods. (2 marks)
ii) State a device commonly used in automated data entry and provide an example of an area where it is heavily
used. (2 marks)
iii) State two advantages of automated data entry methods over manual data entry methods. (2 marks)
iv) List two devices that produce a softcopy of processed data or inputted data after processing. (2 marks)
Q3. a) A school is trying to reduce its expenses associated with equipping all administrative buildings with printers and
school management software, which is licensed for only two machines. A technician suggests connecting the
computers on a network to lower costs and reduce the number of printers and the use of multiple licenses. The
principal, who is unfamiliar with the concept of “connecting computers on a network,” seeks your help as a
Form Five Computer Science student.
| i) Define a computer network for the principal. | (2 marks) |
| ii) Explain how connecting the computers in a network can reduce costs, particularly regarding reducing the need for | |
| more than 10 printers and additional software licenses. | (2 marks) |
| iii) Define computer physical topology and propose two types of topologies for the school’s network. | (2 marks) (1 mark) |
| | Draw a diagram illustrating these two topologies to help the principal understand. |
| iv) In your opinion, is it necessary to add a server to this network, considering the potential costs briefly explain your | |
| answer? | (1 marks) |
b) Differentiate between the following
i) Impact and non-impact printers
ii) Liquid Cristal Display and Cathode Ray Tube monitors
iii) Application software and system software
You
April 16, 2025
We want solution for free
William statham
June 11, 2025
Please can i have solutions to this past question ? thanks