VNC, expanded as Virtual Network Computing, is simply a remote desktop protocol. It can be utilized for viewing a computer from anywhere through another machine. In a nutshell, VNC  is a graphical desktop sharing system.The VNC architecture comprises of three major components – VNC Server, VNC viewer, and VNC protocol. VNC simplifies distance constrains while accessing another system. It is a resourceful tool for diagnosing and fixing issues on other systems, and also taking back of files is very easy with VNC.