http://www.michael-noll.com/blog/2012/10/16/understanding-the-parallelism-of-a-storm-topology/
https://www.bennadel.com/blog/2566-scope-watch-vs-watchcollection-in-angularjs.htm
https://plus.google.com/discover
https://play.google.com/books/reader?id=ka2VUBqHiWkC&pg=GBS.PR4
https://inspirit.net.in/books/placements/Cracking%20the%20Coding%20Interview.pdf
http://learn-networking.com/network-design/how-a-broadcast-address-works