Unit - 2

Data Link Layer

Q1) What are the responsibilities of data link layer?

Q2) Mention the advantage and disadvantage of stop and wait flow control.

Q3) What is meant by bit stuffing?

Q4) What is piggy backing?

Q5) Explain error detection and error correction techniques.

Q6) Explain the flow control mechanism.

Q7) Explain about HDLC.

Q8) What is meant by LAN and Mention the various architecture in a LAN?

Q9) Write short notes on FDDI.

Q10) Explain the timers and time registers in FDDI.

Q11) Which sublayer of the data link layer performs data link functions that depend upon the type of medium?

Q12) Automatic repeat request error management mechanism is provided by?

Q13) Header of a frame generally contains?

Q14) When 2 or more bits in a data unit have been changed during the transmission, the error is called?

Q15) The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called?