Computer Networking
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

Global network
Electronic newspaper
None of these
Paperless office
Electronic mail

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

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.
All switch and bridge ports are in the forwarding state.

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