2. WHAT ARE NETWORKS?
A network is a group of two or
more computer systems linked
together.
3. WHAT IS LAN?
local-area networks (LANs) : The computers are
geographically close together (that is, in the same
building)
4. WHAT IS WAN?
wide-area networks (WANs) : The computers are
farther apart and are connected by telephone lines
or radio waves.
5. WHAT IS CANS?
campus-area networks (CANs): The computers
are within a limited geographic area, such as a
campus or military base
6. WHAT IS HANS?
home-area networks (HANs): A network contained
within a user's home that connects a person's
digital devices.
7. NETWORK SECURITY.
Network security consists of provisions
and policies adopted by the network
administrator to prevent and
monitor unauthorized access, misuse, modification,
or denial of the computer network and its network-
accessible resources.
8. NETWORK SERVICE
Network services are applications hosted
by servers on a computer network, to provide some
functionality for members or users of the network,
or to help the network itself to operate.
9. NANOSCALE NETWORK
A nanoscale communication network has key
components implemented at the nanoscale
including message carriers and leverages physical
principles that differ from macroscale
communication mechanisms.
