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Order of Software Lifecycle Phases

publish date: 2026/06/22 22:28:18.010690 UTC

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Arrange the four phases of the software lifecycle in the correct chronological order, from first to last.

Software retirement
Software evolution
Software servicing
Software development

Correct Answer

(1) Software development
(2) Software evolution
(3) Software servicing
(4) Software retirement

Explanation

The typical software lifecycle proceeds: development (initial build), evolution (significant architecture and functionality changes), servicing (small essential changes only), and finally retirement (system taken out of use). These phases overlap rather than having sharp boundaries.

Reference

Software Engineering, Ian Sommerville, 10th edition

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