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GlobalFon is an international communication company, which offers international prepaid calling cards. They introduced three different types of cards, (1) AsiaFon: is cheapest for calling all over Asia. (2) EuroFon: offers economical rates for all over Europe and UK. AmericanoFon: offers very attractive rates for USA and Canada. Every card has attributes for activation (True/False), activation date, time remaining, and no. of call made. The card is available in domination of $5, $10 and $20. Assuming there are serial numbers on card for keep track of production system, and a 14-digit code for activating the card. The validity for card after activation is 45 days. AsiaFon; offers 25cent per minutes. EuroFon charges 16 cents per min. AmercanoFon charges 12 cents per min. The billing least count is min. The company wants object oriented software to handle the service of international calling. You are only required to developed classes for processing cards with basic functionality.
Explain Batch operating systems. Batch operating systems : A batch is a sequence of jobs. Such batch is submitted to batch processing operating systems moreover output would s
Difference between static and dynamic RAM. Draw the circuits of one cell of each and explain its working. Ans: Differentiation among Static RAM and Dynamic RAM: Static
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Define exception. The term exception is used to transfer to any event that causes an interruption
Compare and contrast symmetric & asymmetric encryption algorithms. Your response should contain a brief overview of the cryptographic basis for every type of algorithm, and a compa
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pebble merchant
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Downcasting concept is the casting from a general to a more particular type, i.e. casting down the hierarchy in programming
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