The OS shell allows access to the operating system services
I don't think so because the old computers may have not been to date as what we have now but check it out and see.
Answer:
Explanation:
The following code is written in Java. I created both versions of the program that was described in the question. The outputs can be seen in the attached images below. Both versions are attached as txt files below as well.
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Answer:
The failsafe method when facial recognition method is unavailable is the Personal Identification Number (PIN) method.
Explanation:
The Personal Identification Number (PIN) option is available for setup for cases when other biometric authentication methods fail due to several reasons.
Answer:
Explanation:
Gas Filling Station has pumps. Pumps have credit card readers. Driver can able to swipe their cards, pumps have Fuel. Pumps card readers communicate with Credit Company. Driver interacts with pump for fuel and credit card.
In this situation the following we need to treat as objects.
They are Pump, Card reader, Fuel tank, communication system, system controller and price table.
Design pattern for the following system is attached below