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In a customer access ring environment, what type of transport architecture is best suited for creating an OC-12 RPR ring with 4 Cisco 12000 nodes?

Which bytes in the Section Overhead identify the beginning of the STS-1 frame?

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Which are the two possible circuit sizes for an E-series shared packet ring in the network shown in the exhibit?

In SDH a VC-3 is built to contain the following PDH rates:

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For the figure shown, what type of laser is being used? (Note: Measurement taken at launch point.)

What network is a supernet?

Why does SNR decrease as the signal progresses through the DWDM system?

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If you have a fiber cut on all four fibers between nodes C and D in the following diagram put the events listed below in correct chronological sequence.

1. node A loops back traffic in the direction of node E
2. node D initiates a line switch and signals the fact in the K2 byte
3. node C loops back traffic in the direction of node B
4. both sides switch traffic to the protect channel and the circuit is restored in less than 50 ms
5. nodes C detects the loss of signal and signals the fact in the K1 byte

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With RIP running, what command would be used to set the default route on Router 2 to 171.68.64.6 (Router 3)?