340_c3

Write a 4- to 5-page report (excluding cover page and references) answering the following questions.

1. What      are the functions of data link?
2. Why      and where is flow control needed? Explain its parameters.
3. Explain      stop-and-wait flow control with special reference to the handling of (i) a      damaged frame (ii) a lost frame.
4. Explain      HDLC. What are the categories of HDLC stations?
5. What      is the configuration and modes of HDLC?
6. What      does "switching" mean? Explain the three possible switching      methods.

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