The first interview will be over the phone with an actually rep in that department. So no your facts and take notes. If you get the job you will know because they will ask for a list of references and make an follow up appointment where you meet face to face

I was referred to the position by a previous co-worker on a Friday, and sent a copy of my resume in to the account manager. He called back within an hour, and I had an interview set up for Monday. I filled my background check paperwork out on Wednesday, and started the following Monday. The phone interview with the hiring manager, in retrospect, was quite amusing. He's a very pragmatic, no-nonsense, ex-military kind of guy, so if he asked you something like "have you worked with EIGRP?", he wanted "yes" or "no" as an answer. If he wanted details, he'd ask. If he didn't, he expected you to SHUT UP. ALL of us (the first group of hires) were convinced by the end of the interview that he *hated* us, but it's just his personality. The account manager, for his part, did try to prepare us for the kinds of questions we would be asked ("general networking, past background", etc), so that was good. I would have liked a little more insight on the hiring manager's approach, but everything moved VERY quickly and it may simply have slipped his mind.