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

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單項選擇題

A Channel ID mismatch occurs when （）.

A. fibers are terminated incorrectly on a node
B. the channel number in the received K1 byte is not identical to the channel number transmitted in the K2 byte
C. the channel number in the received C1 byte is not identical to the channel number transmitted in the C2 byte
D. the channel number in the received C2 byte is not identical to the channel number transmitted in the C1 byte
E. the channel number in the received K2 byte is not identical to the channel number transmitted in the K1 byte

單項選擇題

The ML-series Ethernet card on the ONS 15454 provides up to （）active Q-in-Q instances per card.

A.255
B.512
C.1024
D.4096

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Scrambling of SONET signals is done to （）.

你可能感興趣的試題

A Channel ID mismatch occurs when （）.

The ML-series Ethernet card on the ONS 15454 provides up to （）active Q-in-Q instances per card.

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