Year 10 Data transmission vocab

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Across
  1. 3. cipher available to anyone communicating with a server.
  2. 6. another word for the data in a packet.
  3. 9. a powerful machine used to host shared services like web sites or databases.
  4. 10. when bits arrive at destination in wrong order.
  5. 11. the first section in a data packet.
  6. 12. error check which confirms receipt of each packet using ACK.
  7. 13. an encrypted message.
  8. 17. cryptographic method where two different keys are used.
  9. 18. sending data one bit at a time.
  10. 19. network topology with a central switch.
  11. 20. data can travel in both direction at the same time.
  12. 21. an acronym for the protocol used on the Internet.
  13. 23. data is broken into these units before sending.
  14. 24. - an acronym for how long a packet can "survive" on the network.
  15. 25. a device which receives data and sends it on to the next device on its journey.
Down
  1. 1. the simplest network topology, using a single cable to connect devices (hint: you can catch one!).
  2. 2. sending/receiving data in one direction only.
  3. 4. when data from one channel disturbs another channel.
  4. 5. one form of parity check.
  5. 7. a key which is kept secret; only known to the server.
  6. 8. error checking technique which calculates a number from the data and attaches it to the end of the transmission, then the receiver does the same.
  7. 9. cryptographic method where sender and recipient both have the same key.
  8. 11. sending data in both directions, but not simultaneously.
  9. 14. sending many bits of data simultaneously, usually used for computer internals only.
  10. 15. method of securing data transmissions so only the recipient can read them.
  11. 16. method of error checking where you count the 1s.
  12. 22. rules for communication.