Consider a dash system for which there are n video versions (at n different rates and qualities) and n audio versions (at n different rates and qualities). suppose we want to allow the player to choose at any time any of the n video versions and any of the n audio versions. a. if we create files so that the audio is mixed in with the video, so server sends only one media stream at given time, how many files will the server need to store (each a different url)? b. if the server instead sends the audio and video streams separately and has the client synchronize the streams, how many files will the server need to store?

1. web and mobile applications allow users to be actively engaged in an online activity. a true b false 2. some examples of business applications purposes are to collaborate, share files, meet virtually in real-time, and accept payments. a true b false 3. an education application would most likely do which of the following? a allow users to watch popular movies and tv shows b connect users with social and business contacts c confirm users' travel plans d teach users a new language 4. a uniform resource locator (url) is how the internet knows where to take users when an address is typed into a browser. a true b false 5. deon is required to provide the citation information for his sources. what type of information should he collect from his sources? a author name, title, date of publication, date of access, url b connections to background information c interesting facts and statistics d notes on important information