Technical support engineer i Interview Questions

I would not know what my co-worker has been assigned to do, so it's a bit judgemental and presumptuous for me to think on those terms. If I knew the persons job was the same as mine and s/he was not performing it I'd wait till I was asked about co-worker performance before I spoke about it to management..and ask management to be more diligent about worker performance measurements.

120V

They asked things like what do the commands actually do

Work in conjunction with a senior resource that may be familiar with the issue in order to resolve the problem for the customer.