A drilling machine has a mean time between failures of 368 hours and mean time to repair of 9 hours. In this case, the availability is ______.

Which of the following is NOT one of the reasons that your bank and book balances will differ due to credit card purchases?

a. The credit card company will pay you the purchase amount less the service charge. b. You will record the sale up to three days before the credit card company pays you. c. The credit card company has issued a chargeback due to fraud. d. Customers will fail to pay their credit card bill and the credit card company will issue a chargeback.

All of the following are current hardware platform trends except

A) green computing. B) virtualization. C) cloud computing. D) Unix. E) quantum computing.