IT professionals build, design, and maintain the systems that handle storing, sending, and retrieving information. Employers are looking for individuals who are able to systematically solve the tough and unusual problems that arise in the field. Expect to be asked many hypothetical questions that will assess your thought process when dealing with complex problems.
What happens at "layer 2" when you plug a laptop into the net work?
Did not know I have 18 years experience in IT management. It's been too long since I was an engineer.
They're asking about the OSI model. Layer 2 is the data link layer. Ethernet uses data packets called frames to ID and establish the physical (MAC or EUI) address of the laptop. More at http://en.wikipedia.org/wiki/OSI_model#Layer_2:_data_link_layer
That's a stupid question. How would knowing the answer help you do that job better? You probably learned that 10 to 15 years ago and don't remember. You don't have to remember as you can always look it up. Is this a show about knowing more than a 5th grader?