What is the difference between the transmitted power and the sensitivity of the receiver?（）

Click the Exhibit button. Given the following parameters: transmitter output (min): -2 dBm receiver input (min): -28 dBm 15216 Mux and Demux loss: 4.5 dB 16 channels maximum In which sites shown in the exhibit could the 15216 EDFAs be placed to minimize the number of EDFAs needed?（）

How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?（）

UPSR protection switching is initiated by （）, while BLSR is initiated by （）.

Given the formula: (Fiber Attenuation * Km) + (Splice Attenuation * # of Splices) + (Connector Attenuation * # of Connectors) + (Optical Fiber or OADM) + Buffer(Fiber aging)) With regard to SONET/SDH optical calculations, what will the given formula provide?（）

What are two important considerations when using 2- or 4-channel 15216 OADMs?（） (Choose two.)

What is the phenomenon called where different wavelengths of light travel at different speeds?（）

SONET Path Terminating Equipment (PTE) requires which three line codes to be supported for DS1 and DS3 circuits?（） (Choose three.)

A 2.5 Gb/s (OC-48 or STM-16) optical signal with a dispersion tolerance of 1200 ps/nm goes through fiber with 18ps/nm*km of dispersion. How many 15216-DCU-350 equivalents are needed for enough compensation after traveling 100 km?（）

Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）