ITPEC FE Morning April 2023 Question 62
ITPEC FE Morning April 2023 — Question 62 of 80
A state transition diagram models systems with distinct operating modes that change in response to input conditions. The key indicator is a system that reacts to events and switches behavior accordingly.
(b) Greenhouse control system is correct because it operates in multiple states (heating, cooling, ventilating) and transitions between them based on sensor data — a classic state-driven design.
Why not others:
- (a) Electricity charge calculation — a straightforward computation (rate × usage), no state switching involved
- (c) Inventory control system — batch collection and aggregation on a schedule, a linear data processing task
- (d) System resource monitoring — measures metrics and generates reports, no state transitions
Key rule: State transition diagrams fit systems that react to events and switch operating modes — look for keywords like "sensor", "control", "based on conditions".
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