Data Communication and Networking – June 2014

Part – A

    1. Differentiate between analog signals and digital signals.
    2. What are different transmission modes?
    3. Differentiate between error correction and detection.
    4. What is modem? Where it can be used?
    5. Differentiate between circuit switching packet switching.
    6. What is the purpose of Network layer?
    7. List X.25 layers.
    8. What is Broadband ISDN?
    9. What is the purpose of gateway?
    10. What is meant by encryption?

Part – B

Unit -I

  1. Describe in detail about OSI layered architecture.
  2. Describe about any 4 digital – digital encoding techniques.

Unit -II

  1. Describe about unguided media.
  2. Explain about:
    1. Multiplexing
    2. Types of errors

Unit -III

  1. Write short note on:
    1. HDLC
    2. Sliding – window protocol
  2. Write about token bus.

Unit -IV

  1. Describe about ATM protocol architecture.
  2. Write about ISDN.

Unit -V

  1. Explain about distance – vector routing algorithm.
  2. Describe about application layer.

Attention : This exam questions are converted from the real exam paper to a digital text format by using an OCR Software that may made some mistakes, I reviewed it many times to correct it, But may still there some errors that I missed or misspelled, So if you detect an error or mistake PLEASE report by adding a comment or contact me.