Advanced Networking Table of Contents 1. Need of OSI Model. 2. OSI Model Explained. 3. Framing in Data Link Layer. 4. Byte Count Framing. 5. Byte Stuffing Framing. 6. Bit Stuffing Framing. 7. Error Detection and Correction. 8. Simple Parity Check error detection. 9. 2D Parity Check error detection. 10. Checksum Error Detection.