A(n) is a valuable device in the event of a power failure.? ? media converter ? blu-ray dvd ? thin client ? uninterruptible power supply (ups)

Hassan is writing his master’s thesis, which is a thirty-page document. he received some feedback from his professor in the form of comments, but does not see where the comments are. what is the fastest way for hassan to find the feedback?

What type of file does a cookie place on web site visitors' computers so that web site managers can customize their sites to their visitors' preferences?

Why were most movies from the late 1890s until the early 1930s only filmed in black and white? there were only a few people who could afford the technology to produce color motion pictures back then. audiences did not want color motion pictures until later. the film used to make color motion pictures often overheated, which was a safety hazard, so it was generally not allowed. color films had to be hand-colored, frame by frame.