Is there a way to test a connection to a SQL Server through the command line or without any extra software? I've tried the ping and telnet methods shown in this article, but they both fail to find my SQL Server. Note that the connection is fine, I can connect to the server through SSMS, but it would be useful to be able to troubleshoot the connection otherwise.
For example, we have people working from home and I want to be able to test the connection to the database server without having to install SSMS on their machine.
The server name looks like: SERVER\SQLEXPRESS
And I tried ping SERVER\SQLEXPRESS (Ping request could not find host) and telnet SERVER 1433 (Could not open connection to the host, on port 1433)
EDIT: I can ping the server just fine ping SERVER
EDIT2: Everything I have tried I test with both the name and the ip. The DNS is fine so it shouldn't cause an issue to use one or the other

