| 642-311 Exam |
| 642-311 - Exam Information |
| Question of the day |
Exhibit: When designing a DWDM system with multiple amplified spans, a pre-amp is needed at Site B to _____. (Choose three.)
Answer(s)
offset the OADM loss at Site B
amplify signal levels after the high loss through Fiber Span 1
ensure that the per channel power is higher than the minimum needed for the post-amp atSite B