Gianluca Martiniello, CCIE #22567

I passed the CCIE R&S lab on November 4th 2008 in Brussels the very first time I tried it and I wouldn't have made it without your invaluable materials! I have been using Volume I & II workbooks extensively while preparing for the lab and I have been reading all the posts on your blog. I also had the opportunity to use volume I version 5.0 beta workbook and I must say it is an impressive source of knowledge in R&S field that can even be used as a quick reference for daily work. Thanks a lot to the IE team!