When using the _______ approach in incremental integration testing, testing starts from the higher levels of the hierarchy.

  • Big Bang
  • Bottom-up
  • Sandwich
  • Top-down
In the Top-down approach of incremental integration testing, testing starts from the top or main module and moves downwards, incorporating sub-modules one by one. This approach allows testing of the main functionality earlier in the development process, even if all sub-modules aren't complete yet.
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