A. line timing
B. loop timing
C. internal timing
D. through timing
E. external timing
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你可能感興趣的試題
Click the Exhibit button. A customer has several interconnected core rings (see exhibit). They want to create several irtual rings?utilizing their OC-192 backbone (nodes 1,2,3,4). What should you recommend?（）
A. PPMN with BLSR rings
B. PPMN with UPSR rings
C. 1:N protection on all core circuits
D. multi-ring interconnect with BLSR rings
A.10
B.32
C.64
D.84
E.96
Click the Exhibit button. Within an ONS 15454, you are provisioning a circuit on an unprotected UPSR ring. In the exhibit, which two must you configure?（） (Choose two.)
A. revertive
B. circuit type
C. circuit size
D. bidirectional
E. protected drops
F. switch on PDI-P
A.225 ft
B.450 ft
C.655 ft
D.900 ft
最新試題
What are three relevant design considerations when using the 15216 EDFA? （）(Choose three.)
What are two important considerations when using 2- or 4-channel 15216 OADMs?（） (Choose two.)
On an ONS 15454 node you can tunnel an （）.
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?（）
Scrambling of SONET signals is done to （）.
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?（）
UPSR protection switching is initiated by （）, while BLSR is initiated by （）.
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）
In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?（）
SONET Code Violations (CVs) totals in the PM tables are actually an accumulation of the number of （）.