Most developers don’t fail because they lack knowledge…
They fail because they answer like a textbook.
❌ What most candidates say
“It reduces coupling.”
✅ What gets you hired
“Dependency Injection separates object creation from business logic, improving testability and maintainability.”
Real example (Dependency Injection)
Most candidates say:
“It reduces coupling.”
Better answer:
“It allows you to swap implementations and test components independently.”