Data Communication and Networking – November 2013

Part – A

    1. Differentiate between synchronous and asynchronous communication.
    2. What are different transmission impairments that are effecting the channel?
    3. Draw the signal for bit stream 01101001 using Manchester encoding.
    4. What is meant by pipelining?
    5. Brief about circuit switching.
    6. Differentiate between go-back-N and selective-reject.
    7. List different ISDN services.
    8. Differentiate between 1-persistent CSMA and p-persistent CSMA protocol.
    9. Brief about repeaters, bridges.
    10. What is Encryption/Decryption?

Part – B

Unit -I

  1. Explain in detail about PCM encoding technique.
  2. Discuss in detail about OSI Architecture.

Unit -II

    1. A bit stream 10011101 is transmitted using standard CRC method. The generator polynomial is x3+1. Show that the actual bit string are transmitted.
    2. Explain about sliding window protocol.
  1. Describe about guided media.

Unit -III

  1. Write about token bus and its frame format.
  2. Write about two different error control techniques.

Unit -IV

  1. Describe in detail about ATM.
  2. Describe about ISDN layers.

Unit -V

  1. Write about transport layer.
  2. Write about link-state routing algorithms.

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.