its not going to help you when something out of left field comes at you.
For example a couple of years into my first job I got to work to be told we have just brought an a0 digitizer ( cost about 2x my then salary) id like you to hook it up to the PDP 11 and get it working. I should point out there where no drivers or software.
I even had to make the serial cable up then write the drivers using some of the more advanced bits of RT11 to run two processes with the driver interrupting the main program when data came in on the rs232 port.
Interviewers don't share the questions they are expecting you to prepare for.