no cause that is the reason your banned
You can't get banned from your account, but if you get banned from a server, try appealing on the website of the server. If they refuse your appeal, then you shouldn't have been bad in the first place. Find another server.
It depends on the server. Some people ban you for a longer amount of time than others. Improved: When you try to join a server and it says "You have been temp-banned for (time)" You will be unbanned after that period of time. But if it says "You have been banned from this server." Your are banned for life.
Vandalize a popular server.
there is not a password if you are a banned you are banned
If your talking bout minecraft, it means your banned, or you have been kicked of the server. It can happen sometimes when there is a whitelist
It depends on the server op's but if its your single player server no.
Yes.
no. you are only banned from what ever server you got baned from.
i do.
It truly depends on your offence towards the server.
that happens you probably got banned or kicked off the server
Remove them from the banned list in the server files, or say /unban