Cambridge IGCSE Information and Communication Technology practice
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At a glance
MCQ
Type
cambridge_mcq
Style
Topic
Implementation
Exam-style question
Which implementation method involves running both old and new systems at the same time?.
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Flashcard 1 of 6
Question 1 of 5
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Description
The organization is considering four methods to implement the new system: direct changeover, parallel running, pilot running, and phased implementation. Each method has different characteristics, benefits, and drawbacks.
| Method | Description | Advantages | Disadvantages |
|---|---|---|---|
| Direct changeover | Old system is replaced immediately by the new system. | Quick implementation; no need to run two systems. | High risk if new system fails; no fallback. |
| Parallel running | Both old and new systems run simultaneously for a period. | Safe transition; fallback available. | Costly; requires extra resources. |
| Pilot running | New system is tested in a small part of the organization first. | Reduces risk; allows testing. | Takes longer; limited initial use. |
| Phased implementation | New system is introduced in stages over time. | Spreads risk; manageable workload. | Complex to manage; longer implementation. |
Describe Describe the main characteristic of the direct changeover method.
Aim for approximately 2 distinct marking points.
Explain Explain one advantage and one disadvantage of parallel running.
Aim for approximately 4 distinct marking points.