Parallel changeover is: , high risk, low risk, Parallel changeover is not as expensive a method as direct changeover, true, false, Two systems are running at the same time for a while, true, false, Duplication of resources with this method, true, false, Which of the following are best suited to parallel changeover (select all that apply)?, non-critical systems, complex systems with high risk, critical systems with zero downtime, systems with significant user impact.

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