最新試題

In order to avoid misconnections due to a failed node in an MS-SPRing, Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?()

題型:單項(xiàng)選擇題

Which device creates an OEO conversion? ()

題型:單項(xiàng)選擇題

For lasers with tightly controlled wavelengths, approximately how far apart are the centers of adjacent wavelengths when 100 GHz spacing is used in a DWDM system? ()

題型:單項(xiàng)選擇題

Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications. What are two possible sources of trouble shown in the system?()

題型:多項(xiàng)選擇題

Which is a legitimate bandwidth matched pair?()

題型:單項(xiàng)選擇題

Click the Exhibit button. What is the maximum allowable loss budget between the ONS 15216 Mux (left side) composite output and the ONS 15216 Demux (right side) composite input, with the optical values given in the exhibit? (Assume the worst case loss of 4.5 dB for 15216 200 GHz Mux/Demux and ignore power penalties or extra margin.)  ()

題型:單項(xiàng)選擇題

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

題型:單項(xiàng)選擇題

In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?()

題型:單項(xiàng)選擇題

How is a Thin Film filter fabricated? ()

題型:單項(xiàng)選擇題

SDH Code Violations (CVs) totals in the PM tables are actually an accumulation of the number of().

題型:單項(xiàng)選擇題