How many way to start and stop weblgic servers?

ANSWER :
There are many ways to start & stop weblogic Admin and managed servers:

You can start and stop Admin Server using :
1) Scripts
2) "Java weblogic.server "command (The weblogic.Server class is the main class for a WebLogic Server instance)
3) From startup option on windows
4) WLST with or without node manager

You can start managed servers using:
1) scripts
2) admin console
3) using WLST
4) using node manager
5) java weblogic.server command( The weblogic.Server class is the main class for a WebLogicServer instance )