Answer:
Code is too large , i attached a source file below and also a text file from where i get Questions
Explanation:
I think it's Graph Search because there isn't any graphs in Facebook. That is my opinion. I don't use social media.
Embedded.
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Real-time is for thing like your thermostat (Nest) etc.
Distributed is for huge number crunching supercomputers.
Multi-user would mean more than one person was using the device at the same time with a different device.</span>