單項選擇題Which is a legitimate bandwidth matched pair?()

A. DS-1; E1
B. DS-1; STM-1
C. OC-3; STM-1
D. STS-1; STM-1
E. OC-192; STM-192


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2.單項選擇題Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?()

A.DUS
B.line timing
C.loop timing
D.internal timing
E.through timing

4.單項選擇題SONET Code Violations (CVs) totals in the PM tables are actually an accumulation of the number of ().

A. J0 errors detected in a specified interval
B. errors detected in a given Errored Second (ES)
C. errors detected in a given Severely Errored Second (SES)
D. errors the encryption algorithm detects in a specified interval
E. Bit Interleaved Parity (BIP) errors detected in a specified interval

5.單項選擇題Scrambling of SONET signals is done to ().

A. prevent the leakage of external fiber emissions
B. provide the optical network with the highest level of security possible
C. assure an even distribution of 1's and 0's for extended transmitter life
D. assure an adequate number of transitions for clock recovery at the receiver
E. prevent the receiver from assuming AIS inadvertently when all 0's are received

最新試題

The ONS 15216 is a 32-channel system. The ONS 15216 OADMs are capable of adding and dropping one, two, or four channels. How are the OADMs provisioned to add and drop specific channels?()

題型:單項選擇題

Which three technologies are used to reduce chromatic dispersion accumulation in fiber-optic transmission systems? ()(Choose three.)

題型:多項選擇題

SONET Path Terminating Equipment (PTE) requires which three line codes to be supported for DS1 and DS3 circuits?() (Choose three.)

題型:多項選擇題

Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?()

題型:單項選擇題

If node 2 is accepting line timing from node 1, node 2 will send ()to node 1 as its SSM message.

題型:單項選擇題

If the dispersion of a given fiber is 17ps/nm*km at 1550 nm and zero at 1310 nm, then what is the accumulated dispersion of an ITU wavelength after it travels 200 km?()

題型:單項選擇題

Click the Exhibit button. Which type of multiplexer is shown in the exhibit?()

題型:單項選擇題

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

題型:單項選擇題

A Channel ID mismatch occurs when ().

題型:單項選擇題

Click the Exhibit button. Given the following parameters: transmitter output (min): -2 dBm receiver input (min): -28 dBm 15216 Mux and Demux loss: 4.5 dB 16 channels maximum In which sites shown in the exhibit could the 15216 EDFAs be placed to minimize the number of EDFAs needed?()

題型:單項選擇題