多项选择题
What are three relevant design considerations when using the 15216 EDFA? （）(Choose three.)
A. dispersion
B. Optical SNR
C. span attenuation
D. four wave mixing
E. receiver sensitivity
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相关考题
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单项选择题
UPSR protection switching is initiated by （）, while BLSR is initiated by （）.
A. the K1 SONET byte； the K2 SONET byte
B. the K2 SONET byte；the K1 SONET byte
C. transmitter switching；receiver detection
D. Line Overhead bytes；Path Overhead bytes
E. Path Overhead bytes；Line Overhead bytes -
单项选择题
On an ONS 15454 node you can tunnel an （）.
A. SDH circuit over a SONET network delivering it as an SDH signal
B. SDH circuit over a SONET network delivering it as a SONET signal
C. SONET circuit over an SDH network delivering it as an SDH signal
D. SONET circuit over an SDH network delivering it as a SONET signal -
单项选择题
In order to avoid misconnections due to a failed node in a Bidirectional Line Switched Ring (BLSR), Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?（）
A. trunking
B. squelching
C. nodal bypass
D. bridge and roll
E. node failure insertion
