Two common, yet opposing SOA delivery approaches are:

Question

Options

• Abottom-up and upside-down
• Btop-down and left-to-right
• Dnone of the above

• A
  5% (1)
• B
  5% (1)
• D
  91% (20)

Explanation

Option D is correct because neither listed option accurately names the two classic SOA delivery approaches - the actual pair is top-down and bottom-up, which does not appear as a choice. Option A is wrong because "upside-down" is not a recognized SOA methodology; it pairs a real approach (bottom-up) with a nonsense term. Option B is wrong for the same reason - "left-to-right" is not an SOA delivery strategy; it pairs a real approach (top-down) with another nonsense term.

Memory tip: Think of it as building a house - you either start with the blueprint (top-down: plan enterprise services first, then build) or start with the bricks you already have (bottom-up: wrap existing systems as services, then integrate). If an answer replaces either of those directions with a non-directional or nonsensical term, it's a distractor.

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