Computer Networking
Avalanche photodiode receivers can detect hits of transmitted data by receiving

400 photons
100 photons
300 photons
200 photons
None of these

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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?

Electronic mail
None of these
Global network
Electronic newspaper
Paperless office

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