Key disadvantage of the sequential waterfall model is:

Key disadvantage of the sequential waterfall model is:

  1. a) Lack of documentation
  2. b) Overlapping phases
  3. c) Lack of client feedback
  4. d) Too many prototypes

From the BCS Technical Cadre (ICT) October 2025 – 49th BCS Written (Special) (BPSC) exam, question 26 of 106.

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