TCP/IP AND OSI MODEL DIAGRAM :

PRESENTATION LAYER :

SESSION LAYER :

TRANSPORT LAYER DIAGRAM :

SOURSE TO DESTINATION DELIVERY DIAGRAM :

HOP TO HOP DELIVERY DIAGRAM :

DATA LINK LAYER DIAGRAM :

PHYSICAL LAYER DIAGRAM :

OSI MODEL DIAGRAM :

COMPUTER SYSTEM DIAGRAM :

WHAT IS OPERATING SYSTEM: ?

A program that acts as an intermediary between a user of computers and computer hardware.
Operating system goals: Execute user programs and make solving user problems easier.
Make use of the computer system convenient. Use the computer hardware in an efficient manner...