My
User Center 
- Optical
- Nokia Optical Design Expert
- Nokia Optical Network Professional
- Nokia Optical Network Services Expert
| 642-321 | Cisco Optical SDH Exam (SDH) | $99.00 $19.00 |  |
| 642-311 | Cisco Optical SONET Exam (SONET) | $99.00 $19.00 | |
| 4A0-255 | Nokia Advanced Optical Network Design | $98.00 $66.99 | |
| 4A0-205 | Nokia Optical Networking Fundamentals | $98.00 $66.99 | |
| 4A0-220 | Nokia GMPLS-Controlled Optical Networks | $98.00 $66.99 | |
| 4A0-265 | Nokia Optical Diagnostics and Troubleshooting | $98.00 $66.99 | |
