I work for the HellMouth(BellSouth). The difficulty of the test varies with your experience, i was an ET in the USN so it was easy for me. I had to take Basic Electricity and a seperate test for Basic Electronics, Computer Fundamentals and Digital Priciples to get my job. But they are less strict now, after only 12 out of 350 made it out of my group. And we are laying off this quarter, so good luck getting a job here.