Which scheduling approach emphasizes resource constraints and buffers to protect project due date?

Which scheduling approach emphasizes resource constraints and buffers to protect project due date?

• A. CPM
• B. GERT
• C. Critical Chain Method
• D. PERT

Answer: (C)

The idea being tested is that scheduling is driven by how available resources shape the plan and by using buffers to guard the due date. The critical chain method identifies the project’s longest path when resource limits are considered and then adds buffers to absorb variability. These buffers—project buffers at the end, feeding buffers where non-critical paths feed into the critical chain, and sometimes resource buffers to ensure scarce resources are ready when needed—protect the finish date from delays caused by uncertainty or multitasking. This focus on constrained resources and deliberate buffering is what sets it apart from other techniques. CPM fixes task durations and uses float but doesn’t design buffers to guard the due date against resource contention; PERT uses probabilistic estimates but doesn’t inherently incorporate buffers to cover resource-driven delays; GERT uses a probabilistic network but isn’t centered on buffering to protect a deadline. So, the method that emphasizes resource constraints and buffers to protect the project due date is the critical chain method.

The idea being tested is that scheduling is driven by how available resources shape the plan and by using buffers to guard the due date. The critical chain method identifies the project’s longest path when resource limits are considered and then adds buffers to absorb variability. These buffers—project buffers at the end, feeding buffers where non-critical paths feed into the critical chain, and sometimes resource buffers to ensure scarce resources are ready when needed—protect the finish date from delays caused by uncertainty or multitasking. This focus on constrained resources and deliberate buffering is what sets it apart from other techniques. CPM fixes task durations and uses float but doesn’t design buffers to guard the due date against resource contention; PERT uses probabilistic estimates but doesn’t inherently incorporate buffers to cover resource-driven delays; GERT uses a probabilistic network but isn’t centered on buffering to protect a deadline. So, the method that emphasizes resource constraints and buffers to protect the project due date is the critical chain method.