Exam CISA topic 1 question 8 discussion

Parallel running should have the least downtime

funny, the pilot may be done in "parallel" for proper comparative results then "cutover". Efficiency in reducing downtime, is achieved via the parallel execution via similar resources intended for deployment, if factors such as scale, cost and resources are considered, not enough scenario information is included, to say which phase is creating most inefficiency. if the difference between Pilot and Parallel is scale, then would that not depend on the overall organization resource allocation and impact on operation, A good pilot could be argued to need to be scalable or simulate full load before implementation.

Parallel execution is the safest because it allows both systems (old and new) to operate simultaneously, reducing the risk of failures during the transition. However, this strategy is the most costly and does not necessarily minimize downtime, as both systems must operate simultaneously for an extended period, and databases may need to be merged and more configurations modified than in a cutover to initiate the parallel process and move it to production. If only downtime is considered, cutover is better.

To ensure downtime, running the new system in tandem (parallel) with the old one ensures the least downtime. It's common sense

C. Pilot - A pilot implementation tests the new system with a small group of users or in a limited part of the organization. It can be useful for identifying issues before a full rollout but does not necessarily decrease downtime for the entire business during the transition.

pilots explaination is different

Parallel is the most efficient yet most costly one

The purpose of parallel testing is to ensure that the implementation of a new system will meet user requirements.

Why the hell are they saying pilot is correct if everyone is voting for parallel

D is more safety

D is the reliable for downtime but NOT EFFICIENT since increase redundancy. Remaining option that still can reliable enough for downtime and also efficient should be PILOT CMIIW

Parallel running should have the least downtime

I vote for parallel

C and D are the only changeover techniques here. and out of 2, D is the correct answer. Pilot is not even an option.

D is the right answer

Definitely parallel, Pilot is only temporarily for small parts of the system

I think cutover is the correct answer since you are going to use the new system only while on parallel you will be using the two systems which is time consuming. pilot could be a correct choice as well since you already tested the new system.