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Chapter 6 · Service ManagementPractice
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CONCEPT PRACTICE

System transition methods

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Volume 2 · Chapter 6 · Textbook Exercises · Q4

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Among the descriptions of the system transition (or migration), which of the following is an appropriate characteristic of the big bang transition approach?

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Source: FE Vol 2.pdf, PDF page 380, textbook p. 373 · Information-technology Promotion Agency, Japan · First Edition: April, 2015. ID: tb-v2-c6-q4. Publisher answer and commentary · private review.

Original question · Q4
Q4 Among the descriptions of the system transition (or migration), which of the following is an appropriate characteristic of the big bang transition approach? a) Since the operation method is notified in a phased manner after the system operation has started, this approach can avoid confusion in users. b) This approach is used when system scale is large, and it can make the extent of impact be limited if the transition is unsuccessful. c) Since the double burden of work can be avoided by a parallel operation with both the new system and the old system, this approach offers large economic effects. d) The system can be operated in comparison of processing results of both the new system and the old system, and if there are no issues, it is possible to stop the comparison work and make a transition to the new system.

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