Correct Answer : All of the above
Explanation : Following companies are using Memcached :* Twitter* Facebook* WordPress* Airbnb
Correct Answer : Stats
Explanation : The Memcached stats command returns server statistics such as PID, version, connections, and so on.
Correct Answer : Quit
Explanation : The quit command is used to close the connection.
Correct Answer : One
Explanation : Each Memcached has one unique key.