Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

Explain the main types of maintenance that a system may undergo in its lifespan

Answers

There are four types of maintenance:
Corrective maintenance
This occurs when there is a system failure. The objective is to ensure that the system
remains operational.
?
Diagnoses and corrects errors in the system
?
Investigation, analysis, design, and testing are necessary before a solution is implemented
?
Typically, a user submits a systems request form with supporting evidence, if
necessary
Adaptive maintenance
This is undertaken in response to anticipated changes in the processing environment to
add new capability and enhancements
?
Adds enhancements to the system
?
An enhancement is a new feature or capability
?
Adaptive maintenance often is required in a dynamic business environment
?
An adaptive maintenance project is like a mini-SDLC, with similar phases and tasks
?
Can be more difficult than new systems development, because of the constraints of an existing
system
Perfective maintenance
This occurs to improve the system by eliminating processing inefficiencies or enhancing
performance. Involves changing an operational system to make it more efficient,
reliable, or maintainable
?
Requests for corrective and adaptive maintenance typically come from users, while requests for
perfective maintenance typically come from the IS department
Preventive maintenance-
Undertaken to avoid future occurrences that may be detrimental to the system e.g
putting a firewall to a system to avoid hacking into the system.

gregorymasila answered the question on December 17, 2017 at 13:53

Answer Attachments

Next: State any FOUR rules for system testing

Previous: Explain how the following concepts of performance and workload measurements are used is assessing the performance of systems. (i) Response time (ii) Turnaround time (iii) Throughput

View more Computer Science Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

State any FOUR rules for system testing (Solved)

State any FOUR rules for system testing.

Date posted: December 17, 2017 . Answers (1)
List any FOUR features that would define quality software being developed (Solved)

List any FOUR features that would define quality software being developed

Date posted: December 17, 2017 . Answers (1)
Outsourcing can be defined as the process of turning partially or fully an organisation‘s IT services to external entities. Discuss the merits and demerits of outsourcing... (Solved)

Outsourcing can be defined as the process of turning partially or fully an organisation‘s
IT services to external entities. Discuss the merits and demerits of outsourcing the IS
function in an organisation.

Date posted: December 17, 2017 . Answers (1)
Outline the advantages and disadvantages of centralisation and decentralisation of the IS function (Solved)

Outline the advantages and disadvantages of centralisation and decentralisation of the IS
function

Date posted: December 17, 2017 . Answers (1)
Different organisations have adopted different structures for the IT department.Outline the traditional structure of an IS department and explain the main activities of the key... (Solved)

Different organisations have adopted different structures for the IT department.
Outline the traditional structure of an IS department and explain the main activities of the
key sections.

Date posted: December 17, 2017 . Answers (1)
i) What do you understand by the term Document Image Processing (DIP)? (ii) Identify the main applications of DIP and state three advantages of using... (Solved)

i) What do you understand by the term Document Image Processing (DIP)?
ii) Identify the main applications of DIP and state three advantages of using DIP in information management.

Date posted: December 17, 2017 . Answers (1)
Modern banking environments have greatly benefited from developments in Electronic Data Interchange (EDI) and electronic funds transfer. Explain EDI and EFT and show their contribution to... (Solved)

Modern banking environments have greatly benefited from developments in Electronic
Data Interchange (EDI) and electronic funds transfer. Explain EDI and EFT and show
their contribution to better business transactions.

Date posted: December 17, 2017 . Answers (1)
What are the major limitations of manual systems? (Solved)

What are the major limitations of manual systems?

Date posted: December 17, 2017 . Answers (1)
Office automation has revolutionized the office environment empowering the office worker to increase their productivity. (i) Define office automation and show its impact on the business (Solved)

Office automation has revolutionised the office environment empowering the office
worker to increase their productivity.
i) Define office automation and show its impact on the business
ii) Define Desktop Publishing (DTP) and indicate the business applications of the
systems?

Date posted: December 17, 2017 . Answers (1)
Write down the factors to consider when choosing a software of a computer system. (Solved)

Write down the factors to consider when choosing a software of a computer system.

Date posted: December 14, 2017 . Answers (1)
Which is the short cut of saving a document in Microsoft word? (Solved)

Which is the short cut of saving a document in Microsoft word?

Date posted: December 13, 2017 . Answers (1)
Using the mode printing and speed, describe the character, line and page printers (Solved)

Using the mode printing and speed, describe the character, line and page printers.

Date posted: December 6, 2017 . Answers (1)
Highlight the characteristics of hypermedia (Solved)

Highlight the characteristics of hypermedia.

Date posted: December 5, 2017 . Answers (1)
Give the disadvantages of using multimedia (Solved)

Give the disadvantages of using multimedia.

Date posted: December 5, 2017 . Answers (1)
Highlight the advantages of using multimedia (Solved)

Highlight the advantages of using multimedia.

Date posted: December 5, 2017 . Answers (1)
Discuss the uses of computer graphics and multimedia technology in the world today (Solved)

Discuss the uses of computer graphics and multimedia technology in the world today.

Date posted: December 5, 2017 . Answers (1)
Define the term hypertext as used in multimedia technology (Solved)

Define the term hypertext as used in multimedia technology.

Date posted: December 5, 2017 . Answers (1)
Name six complex image enhancement capabilities (Solved)

Name six complex image enhancement capabilities.

Date posted: December 5, 2017 . Answers (1)
State four important processes involved in image processing (Solved)

State four important processes involved in image processing.

Date posted: December 5, 2017 . Answers (1)
Give three considerations to be considered in a multimedia storage devices (Solved)

Give three considerations to be considered in a multimedia storage devices.

Date posted: December 5, 2017 . Answers (1)