On a Logical Data Flow Diagram (DFD), Data Flows

question 7

Multiple Choice

On a logical data flow diagram (DFD) , data flows:

• A) always go from a higher-numbered to a lower-numbered bubble
• B) never go from a higher-numbered to a lower-numbered bubble
• C) can go in either direction as needed
• D) must go from a bubble to a square

---

Definitions:

Cooling System

The system that removes excess heat from an engine and provides heat for the passenger compartment. Components include the coolant, radiator, radiator cap, radiator fan, water jackets, thermostat, hoses, and heater core.

Vacuum Diaphragm

A component in various automotive systems that uses vacuum pressure to actuate or move parts.

Electric Motor

A machine that converts electrical energy into mechanical energy, used in a wide range of applications from household appliances to vehicles.

Cable

A thick, strong rope made of wires twisted together, used for various purposes including electrical transmission, mechanical load-bearing, or communication.