I do feel sorry that you didn't get an attempt to show your experience in the tech support arena. But, as the second review stated, Why wouldn't you do the most basic of research they clearly laid out for you in your interview guide. After the first phone screening when you were passed on to take part in the Skype interview, the recruiter sent you the follow up information. This information informed you of the time of your call and who it was with but it also clearly laid out what to expect and how to prepare. Links directing you apples forums. Directly to a very easy to monuever product specs page. I do wish you the best of success moving forward.
To the last review, Peter, about a Time Capsule. Very basic. Airport Extreme, Airport Express, and the Time Capsule are networking components Apple sells. They're all great products. Without going into much detail, An Airport Extreme is there extremely powerful router. A Time Capsule is the same product but containing a built in 2 or 3 TB hard hard drive. Yes, you can connect any hard drive to a Airport Extreme, but having it built in is all about convenience. I have a USB hub connected to mine, allowing you to expand your networked hard drives up to 16TB. This allows multiple wireless PC or Mac back ups to be done (Time Machine), access to content from anywhere in the world. As for Airport express's, there great routers, many clients will have a Airport Express set up in the far corners of their network, used to hardwire a printer into the network, using them as access points/repeaters, to extend their network, or as great portable units that can be used in hotel rooms, resorts, etc.
Anyways, good luck all. Apple is a fantastic company to work for!