71329 - Revision of Databases and Network Topics

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Across
  1. 1. A device that forwards packets between networks.
  2. 5. The capacity of a communication channel.
  3. 7. Device that provides wireless access to a network.
  4. 8. A key used to link one table to another.
  5. 10. A non-key attribute is stored more than once in the database.
  6. 14. A device that sends data only to the intended device.
  7. 15. The use of more than one attribute, used to uniquely identify an entity occurrence.
  8. 16. Cable that transmits data as light pulses.
  9. 20. Common wired LAN protocol.
  10. 22. This type of address is permanently etched into a NIC.
  11. 24. Value calculated to detect transmission errors.
  12. 27. This layer of the OSI is responsible for splitting data into packets and allocating a packet number.
  13. 28. Unnecessary duplication of data.
  14. 30. A special type of checksum which uses a 'hashing' algorithm.
  15. 32. The process of reducing redundancy in a database.
  16. 33. An attribute for an entity has more than one value.
  17. 34. A computer that manages shared network resources.
  18. 35. A device that converts digital and analogue signals.===============
  19. 36. An object about which data is stored.
  20. 38. Simple error detection using an extra bit.
  21. 39. A structured collection of related data.
  22. 40. A request to retrieve specific data.
  23. 41. Hardware that allows a computer to connect to a network.
Down
  1. 2. Query By _?_: an alternative to SQL which is more suited to novice users.
  2. 3. A type of key used to uniquely identify each record.
  3. 4. A field that describes an entity.
  4. 6. One of the pieces of information found in a data dictionary.
  5. 9. Technology for voice calls over the internet.
  6. 11. Copper cable made from two twisted wires.
  7. 12. A field restricted to a list of valid values.
  8. 13. A device that regenerates weakened signals.
  9. 17. Short-range wireless communication protocol.
  10. 18. Protocol that provides addressing for devices.
  11. 19. A cable with a single copper core.
  12. 21. A weakness of Parity Checking, where this number of bit flips isn't detected.
  13. 22. A type of relationship between entities that must be resolved.
  14. 23. Protocol responsible for packet reassembly.
  15. 25. A special frame passed around a ring network.
  16. 26. A link between two database tables.
  17. 29. High-speed connection with wide frequency range.
  18. 30. Media _?_ A device that could be used to connect a fibre optic to an ethernet cable.
  19. 31. Protocol used to detect collisions on a bus network.
  20. 34. Language used to manage relational databases.
  21. 37. Wireless networking protocol for local networks.