Dumps Questions
Dumps Questions
Latest 642-311 - Cisco Optical SONET Exam Dumps
1. If node 2 is accepting line timing from node 1, node 2 will send _____ to node 1 as its SSM message.
a.ESF
b.PRS
c.DUS
d.SMC
e.B8ZS
Answer :C
2. A 2.5 Gb/s (OC-48 or STM-16) optical signal with a dispersion tolerance of 1200 ps/nm goes through fiber with 18 ps/nm*km of dispersion. How many 15216-DCU-350 equivalents are needed for enough compensation after traveling 100 km?
a. none
b. one
c. two
d. three
e.four
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3. Given the formula: (Fiber Attenuation * Km) + (Splice Attenuation* # of Splices) + (Connector Attenuation * # of Connectors) + (Optical Fiber of OADM) + (Buffer (Fiber aging))
a.fiber loss
b.OSNR level
c.post amplification
d.index of reflection
e.index of refraction
f.power post amplification budget
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4. If the power is 0 dBm, what is the power in mW?
a.0 mW
b.1 mW
c.10 mW
d.1.5 mW
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5. In the OSNR model for EDFA amplifiers, SNROUT = 1/(1SNRIN + FhvB/PIN), what does SNRIN represent?
a.the signal to noise of the current optical amplifier
b.the signal to noise of the previous amplifier or source
c.the signal to noise introduced by the optical multiplexer
d.the accumulated noise to signal ratio of the optical channel
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