1. ________ (DWDM) is a _______ transmission technique.

2. DWDM allows the transmission of _______ over the optical layer.

3. DWDM enables different formats, such as ______, to be transmitted over the optical layer.

4. DWDM increases the capacity of _____ fiber by first assigning incoming ________ to specific frequencies within a designated frequency band and then _______ the resulting signals out onto one fiber.

5. Future DWDM terminals will have the capacity to transmit ____ volumes of an encyclopedia in one second.

6. Compared with repeater-based applications, a DWDM infrastructure also increases the distances between network elements—a huge benefit for long-distance service providers looking to significantly reduce their initial network investments.

7. One drawback to DWDM is that its infrastructure is not easily expanded.

8. DWDM systems are bit-rate and format independent and can accept any combination of interface rates on the same fiber at the same time.

9. DWDM is the final step on the road to full optical networking and the realization of the optical layer.

10. Standard transaction language 1 interfaces are widely available for DWDM systems.