comma with 'in question': this terminal, in question, is

[MasterBlaster]

The following is a question addressed towards someone with computer problems;

What operating system is this terminal, in question, running?

Are the commas correct, or even necessary?

 

[xqby]

I would argue that "in question" is your problem, not necessarily the commas.

"What operating system is this terminal running?"
"What operating system is the terminal in question running?"

 

[MasterBlaster]

Yes, I agree the structure is lacking. Nonetheless, are the commas needed?

 

[panjandrum]

Yes, I agree the structure is lacking. Nonetheless, are the commas needed?

it's not just lacking, it is flawed. It uses two different ways of specifying which terminal (this and in question).
xqby's sentences are good, without commas.

 

[MasterBlaster]

Are the commas correct, or even necessary?

Excellent. Now, back to the question at hand.

 

[panjandrum]

Excellent. Now, back to the question at hand.

I don't understand, now.
Which commas?
There are no commas in xqby's sentences.
There is no reason to add commas to them.