communication protocol

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Across
  1. 4. What does communication protocol allow to transmit?
  2. 6. Communication protocol is a system of rules that allows several entities of a communication system to transmit information via any kind of variation of a ... quantity
  3. 7. We use social ... every day
Down
  1. 1. What is transmitted between several devices using communications protocol?
  2. 2. How do we call electronic goods such as phones and computers?
  3. 3. What can people do using communication protocol?
  4. 5. Communication protocol is a system of ...