Network slack represents the mathematical difference between___________________?
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Answer: B. latest allowable time and the earliest expected time
Explanation
Network slack represents the mathematical difference between the latest allowable completion time and the earliest expected event time. This crucial float calculation indicates how much schedule flexibility exists for an event without delaying the overall project completion date. Events located on the critical path have zero slack, meaning any delay directly impacts the final project delivery schedule. Project network analysis uses critical path methods and PERT to model complex workflows composed of interrelated tasks and milestones. Earliest expected time is calculated during the forward pass through the network diagram starting from the project initiation point. Latest allowable time is determined during the backward pass starting from the required project completion deadline.
Option A references normal expected time, which is incorrect because slack specifically compares latest allowable and earliest expected times. Option C mentions proposed allowable time, which is not standard terminology used in formal network scheduling equations. Option D describes normal allowable time incorrectly, missing the standard definition involving earliest expected event milestones.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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