KCSE 2021 COMPUTER STUDIES PAPER 1

(THEORY)

PAPER 1

OCT. /NOV. KCSE 2021

INSTRUCTION TO CANDIDATES

• This paper consists of two sections; A and B
• Answer question 16 and any other three questions from section B
• All answer should be written in the spaces provided on the question paper.

Q1. 1. State two ways in which a computer may be used in a healthcare  sector other than record keeping

• Patient monitoring
• Used to control medical equipment e.g ultra sound
• medical research and studies
• communication and telemedicine

Q2. State four operations that may be performed on a file by an operating system

• file deletion
• file copying
• file renaming
• file retrieval
• file closing
• file reading

Q3. Explain the term website as used in the internet

• A collection of related webpages under the same domain name

Q4. Explain a reason necessitating  governments to enact data protection laws

• To provide legal backing so that it is possible to seek redress if the rights are violated
• To observe copyright for those who create original works
• To protect the confidentiality of information kept  about an individual

Q5. When an image is inserted in a DTP document is selected, handles on its placeholders appear.  State three uses of these handles

• Used to resize the image
• Used to rotate the image
• Used to move the image

Q6. State a circumstance under which dry-run testing is performed when developing a program (2mks)

• To detect and remove errors
• To confirm if the program produces the expected output

Q7. State two ways in which data validation is implemented on an input form of a database application

• By setting the validation rule for the input controls on the property sheet in design view
• By use of VBA to restrict user inputs for a given control on a form
• By use of queries to restrict options available for the user in a combo box or listbox
• Setting correct data types for the fields in table the design
• Enforcing referential integrity in database relationships
• Use of input mask for the controls on the property sheeet in design view

Q8. Mikal has been employed as a computer trainer in an organisation. State three roles that she is likely to play in the organisation

• Developing training materials
• Training computer users
• Conducting ICT examinations
• Managing the learning and examination process
• Developing guidelines for using the computer lab
• Planning the course content
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Q9. List three electronic data processing modes used in computers

• Realtime processing
• Batch processing
• Timesharing
• multiprogramming
• Online
• Batch
• Distributed