That is, it calculates how long it takes for the packet to reach the server and to be sent back. It's actually slightly more complicated, because when you ping something you actually send a whole bunch of these PING messages.
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What Channel is Investigation Discovery on DIRECTV? By James Dalton Â· November 11, 2013 Investigation Discovery can be found on Channel #305 on the list of DIRECTV Channels . You will be able to watch this channel in HD (High Definition). DIRECTV offers many different programming packages and if you are wondering which ones carry this channel, then you will be able to see it on Entertainment, Choice, Ultimate and Premier. Investigation Discovery delivers some of the best documentaries and series on television.