What are the components of the "triple constraint"? ISEB ISEB-PM1 Exam

Question

Options

• AScope, time, requirements
• BResources, time, cost
• CScope, management, cost
• DScope, time, cost

• A
  3% (1)
• B
  15% (6)
• C
  10% (4)
• D
  72% (28)

Explanation

Scope, Time, and Cost form the triple constraint (also called the "project management triangle" or "iron triangle") because every project is fundamentally bounded by what you're delivering, when it must be done, and how much money is available - change any one and the others must adjust.

• A is wrong because "requirements" is not a separate constraint; requirements define scope, making this redundant and imprecise.
• B is wrong because "resources" is not a standalone constraint at the same level - resources drive cost, so substituting resources for scope omits what the project actually produces.
• C is wrong because "management" is a function, not a constraint; it's the process that balances the three real constraints.

Memory tip: Think of the acronym STC - "Set The Cost" - Scope, Time, Cost. Alternatively, picture a triangle with one word on each side; if you squeeze one side (e.g., cut time), the other two sides must expand or compress to compensate.

No community discussion yet for this question.