Is installing anti-virus standard practice on Windows servers? I always assumed that they (unlike consumer versions of Windows) were locked down enough that, just like with Linux servers, as long as you enabled a firewall and kept up with updates, you would be okay.
You are being naive about the potential use of the server. What if this server is the user profiles and/or is a file server? You absolutely want anti-virus on that server if that's the case.
You should be kidding!
Do you want to compare linux built-in security with Microsoft's security holes and vulnerability?