Computer Networking
The core diameter of a single-mode fibers is about

10 times the fiber radius
None of these
3 times the wavelength of the light carried in the fiber
7 times the light carried in the fiber
10 times the wavelength of the light carried in the fiber

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Computer Networking
You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?

The MAC forward/filter table will not update on the switch.
The routing tables on the switches will not update.
Broadcast storms will occur on the switched network.
The switches will automatically load-balance between the two links.

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