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The Case of... The Missing File Read the case and then answer the questions that follow. Katrisha was almost done with her paper. She 'd been working in a marathon session, sitting in front of her computer screen with only a couple of breaks over the course of an aftemoon. She'd begun work just after noon, when the sky was bright and cleat. By now, some four hours later, it was, dark and gray. and stre heard thunder in the distance. But who cared about the weather? The main thing was that she was almost done. She didn't usually put things off, but thls time she'd gotten behind and was forced to do the work at the last minute. She was writing a report on soitware that blocks "adult" sites from home computers. Luckily she'd been able to find what she needed using various search engines and incorporating the information into her paper. The assignment was due by 5:00 p.m. but the professot accepted papers submitted via e-mall. As long as the message was sent before 5:00, she would be OK. She still had an hour to put the final touches on the paper and send it off, Suddenly, there was a bright flash of lightning, followed by a clap of thunder At the same moment, her computer sereen went black as the clectricity was cut Much to Katrisha's rellet, the outage lasted only a few seconds. Her computer began to reboot, and the screen powered up again. In a few moments, she figured, she could continue het work. But when the computer had fully testarted, the file with the puper that shed been working on all doy was liowhere to be found. She searched frantically through the various files on the computer. but to no uwail Fler heart sinking, she iealized that everything she had done over the afternoon was lost