A. 10
B. 32
C. 64
D. 84
E. 96
您可能感興趣的試卷
你可能感興趣的試題
A. line timing
B. loop timing
C. internal timing
D. through timing
E. external timing
最新試題
Which device creates an OEO conversion？ （）
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？（）
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？（）
A VC-4-4c consists of （）.
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.） （）
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？（）
On an ONS 15454 node you can tunnel a（n） （）.
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications？（）
The dispersion of a non-zero dispersion shifted fiber is 6 ps/nm*km at 1550 nm and 10 ps/nm*km at 1610 nm. What is the minimum dispersion compensation required if an L-Band DWDM signal travels through 200 km of fiber and has a dispersion tolerance of 1800 ps/nm？（）
If node 2 is accepting line timing from node 1， node 2 will send （） to node 1 as its SSM messge.