virtual console it will provide the multiple login in as different user on different virtual console. Virtual console it will be open by the ctrl+Alt+F1 to F6 and hot shortcut key shift + Page up and shift + page down it is used to scroll down on the screen.
Graphical Environment it is called X window System.
In the X window system is a client/server protocol that regulates communicate between application CLIENT and the system service - SERVER.
Redhat It Has The Two Environment
GNOME - GNU Network Object Model Environment
KDE - Alternate Desktop Environment
Gnome it is Default Desktop Environment
From Virtual console migrate into the Graphical Environment
By through star x command System will start the X server.
Ctrl+F7 also automatically switch to the X server.
Virtual console and Graphical Environment in Red hat rhel5 Linux