The answer is Laser Printer. It is a non impact printer that creates characters and images with dots by using a drum and toner. The main advantages of laser printers are speed, precision and economy. A laser can move very quickly, and because the laser beam has an unvarying diameter, it can draw more precisely, without spilling any excess ink.
Answer: Class 10 refers to the read write speed of a memory card
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The answer is D. <em>os.path.exists(filename)</em>
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