computer security puzzle

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Across
  1. 1. A set of rules or procedures for transmitting data between electronic devices, such as computers.
  2. 4. A telecommunications network or computer network that extends over a large geographical distance/place.
  3. 5. A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
  4. 6. A network is a series of computers connected together for the purpose of sharing information with other people.
  5. 8. A computer networking device that connects devices together on a computer network by using packet switching to receive, process, and forward data to the destination device.
Down
  1. 2. A group of computers and associated devices that share a common communications line or wireless link to a server
  2. 3. A system that makes it possible for many messages or large amounts of information to be sent at the same time and very quickly.
  3. 5. A company that provides customers with Internet access.
  4. 7. A combined device for modulation and demodulation, for example, between the digital data of a computer and the analogue signal of a telephone line