computer network puzzle

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Across
  1. 5. interconnected computing devices that can exchange data and share resources with each other.
  2. 7. a set of physical or network devices that are essential
Down
  1. 1. used to connect one network device to other network devices or to connect two or more computers
  2. 2. an established set of rules that determine how data is transmitted between different devices in the same network.
  3. 3. receives and sends data on computer networks.
  4. 4. a physical layer networking device which is used to connect multiple devices in a network.
  5. 6. messages distributed by electronic means from one computer user to one or more recipients via a network.