Thank you very much, you really helped me. But there are already the next problems.
I created a new alias with the name: VAIONamed and Parameters are \\BEBBO-VAIO\pipe\sql\query
I tried:
sqlcmd -S np:\\BEBBO-VAIO\pipe\sql\query
and
sqlcmd -S np:VAIONamed
both led to errors like: Could not open a connection to SQL Server [53]
I look for this error in the internet and found that then probably the server is not accessible and I should test that with ping.
So I tried: ping BEBBO-VAIO (BEBBO-VAIO is the server name)
and the result was:
Ping-Statistik for fe80:.....:
Packages: Sent = 4, Received = 0, Lost = 4
What can I do? Thanks for your help.