ICT IGCSE 7.5 Implementation Types

Which implementation type involves shutting down the old system and starting the new one immediately?

• Direct changeover
• Phased implementation
• Pilot running
• Parallel running

What is a major disadvantage of direct changeover?

• It requires gradual adjustment.
• It is expensive as two systems need to be maintained.
• If not properly planned, the organisation might have to shut down.
• It allows issues to be resolved in stages.

Which implementation type is best for gradual adjustment?

• Direct changeover
• Phased implementation
• Pilot running
• Parallel running

What is a disadvantage of phased implementation?

• Can be confusing and may cause data incompatibility.
• Old system is immediately shut down.
• Requires extra hardware.
• Does not allow comparison between old and new outputs.

Which implementation type trials the new system in one part of the organisation before full rollout?

• Direct changeover
• Phased implementation
• Pilot running
• Parallel running

What is an advantage of pilot running?

• It is simple and cheap to implement.
• Issues can be identified early, and pilot users can train others.
• The old system remains as a backup.
• No planning is required.

What is a major disadvantage of pilot running?

• It can be confusing and cause data incompatibility.
• The old system must be shut down immediately.
• It is expensive as two systems need to be maintained simultaneously.
• There is no way to compare outputs.

Which implementation type involves running both old and new systems simultaneously?

• Direct changeover
• Phased implementation
• Pilot running
• Parallel running

What is a key advantage of parallel running?

• It is cheap and easy to implement.
• Old system remains as a backup and outputs can be compared.
• No extra resources are needed.
• It avoids all risks.

What is a major disadvantage of parallel running?

• It can cause data incompatibility.
• It is expensive as both systems must be maintained.
• It does not allow comparison between old and new outputs.
• There is no backup system.