​Harry's HVAC Sells Its New Units with Locked and Encrypted

question 78

Multiple Choice

​Harry's HVAC sells its new units with locked and encrypted servicing software,which only Harry's own service technicians can operate.Why would it want to do that?

• A)​To ensure that the customer knows that they are stuck with Harry's service technicians
• B)To ensure that Harry's technicians do not service the equipment.
• C)To ensure that the customers do not buy second-class servicing and then infer faulty design if a unit breaks down due to inadequate service
• D)​All of the above

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Definitions:

SiO2

The chemical formula for silicon dioxide, a naturally occurring oxide of silicon commonly found in quartz and many other minerals.

Balanced Equation

A chemical equation that has equal numbers of atoms for each element involved in the reaction on both reactant and product sides, adhering to the law of conservation of mass.

NaClO3

Sodium chlorate, a chemical compound used as a herbicide and in the manufacture of dyes and explosives.

NaCl

The chemical formula for sodium chloride, commonly known as table salt.