The Data Link Layer is the second layer in the OSI model, above the Physical Layer, which ensures that the error-free data is transferred between the adjacent nodes in the network. It breaks the datagrams passed down by the above layers and convert them into frames ready for transfer. This is called Framing.

Data Link Layer - Data Communication and Computer Network

In this “Data Link Layer - Data Communication and Computer Network” you will learn about following topics:

  1. Introduction of Data Link Layer
  2. Framing
  3. Character Count
  4. Starting and Ending Characters, With Character Stuffing
  5. Starting and Ending Flags, With Bit Stuffing
  6. Physical Layer Coding Violations
  7. Basics of Error Detection and Correction
  8. Process of Error Detection
  9. Error-Detecting Codes
  10. Parity Check
  11. Vertical Redundancy Checksum
  12. Longitudinal Redundancy Checksum
  13. Checksum
  14. Cyclic Redundancy Check
  15. Error-Correcting Codes
  16. Flow Control
  17. Retransmission Strategies
  18. Stop and Wait
  19. Go-Back-N ARQ
  20. Selective Repeat ARQ
  21. Protocol Pipelining
  22. Sliding Window Protocols




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BCA 6th Semester Data Communication And Computer Network Notes Pdf: