PK0-005 Practice Question: Basics of IT Infrastructure and IT Project Management
A company is migrating to a new ERP system. The project manager needs to ensure minimal downtime during cutover. Which deployment strategy should be recommended?
⚠ Common exam trap
It's easy for candidates to confuse 'phased' with 'parallel,' assuming that rolling out in stages inherently minimizes downtime, but parallel deployment uniquely allows both systems to run simultaneously to eliminate cutover downtime entirely.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Parallel
The parallel deployment strategy is recommended because it allows the old and new ERP systems to run concurrently during cutover, enabling users to validate the new system while maintaining operations on the legacy system. This minimizes downtime by providing a fallback option if issues arise, ensuring business continuity during the migration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Big bang
Why it's wrong here
Big bang converts every site and module in a single cutover window, so the entire ERP is unavailable for the full deployment duration, directly contradicting the minimal-downtime requirement. It suits small organisations with short, tolerable outages and no phased rollback needs.
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Pilot
Why it's wrong here
A pilot deploys to one site or business unit first, leaving remaining users on the legacy system; the eventual full cutover still requires a separate transition window, so downtime is deferred rather than minimised. Pilots are correct for validating the ERP with limited risk before wider rollout.
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Parallel
Why this is correct
Parallel deployment runs the legacy and new ERP systems simultaneously, so transactions continue on the old system while the new one is validated. This satisfies the minimal-downtime constraint because cutover occurs only after verification, avoiding a disruptive big-bang switchover.
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Phased
Why it's wrong here
Phased migrates modules or sites in successive waves, so the legacy ERP keeps running alongside the new one; downtime is spread across many cutovers rather than minimised to a single window. It is tempting because phased suits large, loosely coupled systems where gradual rollout reduces overall risk.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PK0-005 exam.