GOALS OF NETWORKING  

PROTOCOLS

 

LAYERED ARCHITECTURE

 

THE OSI REFERENCE MODEL

 

Layer 1 - Physical Layer

Layer 2 - Data Link Layer Layer 3 - Network Layer Layer 4 - Transport Layer Layer 5 - Session Layer Layer 6 - Presentation Layer Layer 7 - Application Layer  
MODES OF SERVICE  
CLIENTS AND SERVERS  
SERVICES  
SERVERS

CLIENTS

 
ADDRESSES  
Some definitions: