BTT Crossword 4

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Across
  1. 1. These devices expand networks by creating multiple subnets or subnetworks.
  2. 5. Network that covers metropolitan, regional, national or international boundaries.
  3. 8. Father of the WWW _____ Berners-Lee.
  4. 11. Each host or client in a LAN has a Network ________ Card (NIC)
  5. 12. Type of signal that looks like a sine wave.
  6. 13. (ISDN) ______ Services Digital Network.
  7. 14. OSI layer 3 ensures network integrity and is called the ______ layer.
  8. 15. A WAN is created when connect two or more of these.
  9. 16. - OSI layer 1 works with the bits themselves.
Down
  1. 2. These devices improve performance of a network by creating separate collision domains.
  2. 3. Session ________ Protocol (SIP).
  3. 4. The design layout of the network.
  4. 6. (SONET)________ Optical Network.
  5. 7. A LAN software is called a network ________ system (NOS).
  6. 9. Dual _____ Multi-Frequency (DTMF).
  7. 10. Type of signal that looks like a square wave.