Sergey Naumenko, CCIE #18997


Hi, Just wanted to say you a big thank you for your books. Your books are superb on the market. I passed the lab today in Sydney,R&S on second attempt. First time was too stressful. Anyway,your Lab Workbooks gave me the confidence I needed to complete the lab. Thank you again.

- Sergey Naumenko, CCIE #18997 (CCIE Routing & Switching)