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Computer Network

Unit-2

Lecture Videos

Computer Network , syllabus Wise Unit-2 Lecture Videos
Data Link Layer Design Issues
Framing Techniques (Fixed Size Framing, Variable Size Framing)
Flow Control
Error Control
Error Detection and Correction Codes
CRC (Cyclic Redundancy Check)
Checksum: Idea and Implementation
Internet Checksum (One’s Complement Internet Checksum)
Services Provided to Network Layer by Data Link Layer
Elementary Data Link Layer Protocols:
Simplex Protocol
Simplex Stop-and-Wait
Simplex Protocol for Noisy Channel
Sliding Window Protocol:
One Bit
Go Back N
Selective Repeat
Stop-and-Wait Protocol
Data Link Layer in HDLC (High-Level Data Link Control)
Configuration and Transfer Modes
Frames
Control Field
Point-to-Point Protocol (PPP)
Framing
Transition Phase
Multiplexing
Multilink PPP

Unit-2 Syllabus

UNIT II: Data link layer: Design issues, Framing: fixed size framing, variable size framing, flow control, error control, error detection and correction codes, CRC, Checksum: idea, one’s complement internet checksum, services provided to Network Layer, Elementary Data Link Layer protocols: simplex protocol, Simplex stop and wait, Simplex protocol for Noisy Channel. Sliding window protocol: One bit, Go back N, Selective repeat-Stop and wait protocol, Data link layer in HDLC: configuration and transfer modes, frames, control field, point to point protocol (PPP): framing transition phase, multiplexing, multi link PPP.