Computer Networking
Which of the following summation operations is performed on the bits to check an error-detecting code?

Attenuation
Checksum
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Codec
Coder-decoder

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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 in either the forwarding or blocking state.
All switch and bridge ports are either blocking or looping.

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