Craig Campbell, CCIE #20641
Thank you very much for the excellent study material without which I would have had no chance of passing my CCIE R&S Lab. I passed my R&S Lab in Brussels on Friday 25th April on my 2nd attempt. Your Lab Workbook is excellent and really covers all technologies. I also found the Advanced Technologies Class and R&S Class-on-Demand excellent resources when starting out on the long lab journey.