Major needs and major stakeholders for computer and network applications
Classification of
Networks
A system convention characterizes standards and contracts for correspondence between network devices.

Versatile, few progressions, few elements, high data transfer capacity, CPU power, repetition, port thickness, reasonableness, security highlights
The Advantages of using Layer 2 economical, adaptable and versatile, simple to introduce and keep up.
Advantages of Ethernet technology
Thicknet >(10BASE5)- uses a thicker coaxial link with a transport topology. Thinnet-(>10BASE2) uses a more slender coaxial link with a transport topology. >Ethernet-(10BASE-T) - star topology & UTP cabling >Quick Ethernet (100BASE-T) - convey movement at the ostensible rate of 100 Mbit/s, star topology utilizes UTP .>Gigabit Ethernet (1000BASE-T) - utilizes four sets of Category 5 unshielded contorted pair to accomplish the gigabit information rate of 1000 Mbits/s
Define Ethernet concepts
Classifiedness- Protection from exposure to unapproved individuals. Confirmation- User names and passwords. Trustworthiness- Maintaining information consistency. Firewalls-an instrument that controls advanced data that comes into and goes out of the system. Antivirus-infection programming intended to recognize and demolish infections.
Basic security requirements
LAN (Local Area Network)-WLAN (Wireless Area Network)CAN (Campus Area Network)MAN (Metropolitan Area Network)WAN (Wide Area Network)

Is any individual who has a potential stake in an item or administration. Purchasers, organizations, colleges & schools, banks, government.
Most the greater part of the potential partners offer normal needs, for example, email, web, PC programs, programming, equipment, and security.
LAN system is a system of PCs joined in a neighborhood a school, office building, home, and