Criteria for a Data Communication Network
Classification of Computer network
Network Architecture
Transmission impairments
Transmission Medium
Data encodingLine coding
Line coding
Types of Line Coding
Subnet Masks
Analog to Digital Conversion
Pulse code modulation (PCM)
Delta modulation (Dm)
Hamming code
Cyclic Redundancy Check 
Framing- Character stuffing
Bit stuffing
Flow and Error Control
Noiseless Channels Protocol
Simplest Protocol
Stop-and-wait protocol
Noisy Channels
Selective Repeat ARQ Protocol
Go – back – N – automatic repeat request
Selective Repeat ARQ Protocol
High- level Data Link Control Protocol (HDLC)
Point - to - Point Protocol (PPP)
Pure ALOHA and Slotted ALOHA
Difference between 1-Persistent and Non-Persistent CSMA
Changes in the Standard
Routing algorithm