Computer Networking
Which of the following is an advantage to using fiber optics data transmission?

few transmission errors
fast data transmission rate
low noise level
All of these
resistance to data theft

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Computer Networking
Which statement describes a spanning-tree network that has converged?

All switch and bridge ports are in the forwarding state.
All switch and bridge ports are assigned as either root or designated ports.
All switch and bridge ports are either blocking or looping.
All switch and bridge ports are in either the forwarding or blocking state.

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Computer Networking
Error detecting code is

a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
the ratio of the data units in error to the total number of data units
a check bit appended to an array of binary digits to make the sum of all the binary digits.
None of these
an error-detecting code based on a summation operation performed on the bits to be checked

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