Wireless local area networks enable users to move
around within a larger coverage area, but still be
wirelessly connected to a network.
WAN
Wide area networks cover a broad area.
MAN
Metropolitan area networks are very large networks that cover an entire city
PAN
Personal area networks are used for communication
among various devices such as telephones.
DNS
The domain name system is a hierarchical
decentralized naming system for computers,
services, or any resource connected to the
internet or a private network.
History
Tim Berners-Lee
Inventor of world
wide web.
www
it is an information
space where documents
and other web resources
are identified by
uniform resource
locators (URLs), linked
by an hypertext links,
and can be accessed via
internet.
ARPANET
The advanced research projects
agency network was an early
packet switching network and
the first network to implement
the protocol suite.
Protocols
IP
Internet Protocol
NCP
Network Control Program
TCP
Transmission control protocol
FTP
File transfer program
Security
Firewall
Controls incoming and outcomig network
Performance
Well of performance
Security
Policies and practices
HTTP
Hypertext transfer protocol
Reliability
If it works as expected.
Types of computers
Micro computer
Mini Computer
MAcro Computer
Super Computer
Topology
BUS
Nodes directly connected
to a common linear
half-duplex link.
RING
Each node connects to exactly
two other nodes, forming a
single pathway for signals
through each node.
STAR
A central device
which is used to
connect multiple PCs
in a local area
network.