Computer Networks

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Across
  1. 1. Which network is able to connect to each computer through a common central line?
  2. 4. Router operates in which layer,
  3. 7. PSTN is an example of,
  4. 10. I'm an Networking Device
  5. 11. Modulator and demodulator as combinely is known as –
Down
  1. 2. OSI Reference Model has _______ layers
  2. 3. Which layer is called end to end layer in OSI
  3. 5. _____ is the error detection & correcting technique.
  4. 6. A place where there is a field of signal through which you can access WiFi internet is called –
  5. 8. Provides reliable communication
  6. 9. Bridge works in which layer,