Which is a direct consequence of cycles in a dependency graph?

Which is a direct consequence of cycles in a dependency graph?

• A. Faster builds.
• B. Clear layering.
• C. Improved modular reuse.
• D. Tight coupling and harder maintenance.

Answer: (D)

Cycles in a dependency graph create tight coupling between modules. When modules end up in a circular dependency, each one must know and accommodate the others, so a change in one area often forces changes in several others. This makes maintenance considerably harder, because understanding and modifying the system requires navigating a tangled web of interdependencies rather than a clean, modular structure. Initialization and build order become fragile as well, since the cycle can complicate startup and compilation sequencing. Faster builds, while appealing, usually rely on independent, well-ordered dependencies and potential parallelization—cycles undermine that by tying components together. Clear layering depends on an acyclic structure to define a top-to-bottom order of responsibilities, which cycles break. Improved modular reuse also suffers because reusable pieces become less reusable when they carry along circular dependencies.

Cycles in a dependency graph create tight coupling between modules. When modules end up in a circular dependency, each one must know and accommodate the others, so a change in one area often forces changes in several others. This makes maintenance considerably harder, because understanding and modifying the system requires navigating a tangled web of interdependencies rather than a clean, modular structure. Initialization and build order become fragile as well, since the cycle can complicate startup and compilation sequencing.

Faster builds, while appealing, usually rely on independent, well-ordered dependencies and potential parallelization—cycles undermine that by tying components together. Clear layering depends on an acyclic structure to define a top-to-bottom order of responsibilities, which cycles break. Improved modular reuse also suffers because reusable pieces become less reusable when they carry along circular dependencies.