I've got about 3 years of working experience in .NET and I can answer all of those. Is that an indication?
To me, those questions don't seem very data-centric; rather they seem basic .NET knowledge-ish. But that's my opinion :)
Data-centric questions to me would be more like:
Which method of the SqCommand object would you call to return a single result from a database (single row, single column)?
What problem(s) do you see with the following logic:
cmd.CommandText = "SELECT * FROM permissions WHERE uid = '" + txtBox1.Text + "'";
Under what namespace will you find the classes necessary to interact with a SQL Server DB?
:)