The document provides an introduction to networking, explaining key terms and concepts important for IT professionals, such as types of networks (LAN, WAN, MAN) and network topology (bus, star, ring, tree, mesh). It also outlines the functions of various network devices like routers, switches, and firewalls, and describes the distinctions between intranets, extranets, and the internet. Overall, it serves as a foundational overview of networking principles and applications.

1. NETWORKING
AN INTRODUCTION TO SOME OF THE MOST COMMON TERMS IN BUSINESS THA T
EVERY IT PROFESSIONAL MUST BE AWARE OF.

2. NETWORKING: INTRO
NETWORKING is the construction,
design, and use of a network,
including the physical selection and
use of telecommunication
protocol.

3. APPLICATIONSOF NETWORKS
RESOURCE SHARING:
 Hardware
 Software
INFORMATION SHARING:
 Easy accessibility from anywhere
 Search Capability
COMMUNICATION:
 E-mail
 Message Broadcasting

4. TYPES OF
NETWORKS

5. LOCAL AREA NETWORK
Local area networks
(LANs) are used to connect
networking devices that
are in a very close
geographic area, such as a
floor of a building, a
building itself, or a campus
environment.

6. WIDE AREA NETWORK
Wide area networks
(WANs) are used to
connect LANs together.
Typically, WANs are used
when the LANs that must
be connected are
separated by a large
distance.

7. METROPOLITAN AREA NETWORK
A metropolitan area
network (MAN) is a
hybrid between a LAN
and a WAN.

8. NETWORK
NODES

9. NETWORK INTERFACES: Provides a computer with the ability to access the
transmission media, and has the ability to process low-level network
information.
REPEATER: An electronic device that receives a network signal, cleans it of
unnecessary noise, and regenerates it.
HUB: A repeater with multiple ports is known as a hub.
BRIDGE: Connects and filters traffic between two network segments at the
data link layer to form a single network.
SWITCH: Device that forwards and filters OSI layer 2 datagrams between
ports based on the MAC addresses in the packets.
ROUTER: An internetworking device that forwards packets between
networks by processing the routing information included in the packet or
datagram.
MODEM: Used to connect network nodes via wire not originally designed
for digital network traffic, or for wireless.
FIREWALL: Network device for controlling network security and access
rules.

10. NETWORK
TOPOLOGY

11. BUS TOPOLOGY
BUS TOPOLOGY IS WHERE COMPUTERS ARE CONNECTED USING ONE OR
MORE PARALLEL LINES.

12. STAR TOPOLOGY
IN STAR TOPOLOGY ALL NODES ARE CONNECTED TO A SPECIAL CENTRAL
NODE.

13. RING TOPOLOGY
IN RING TOPOLOGY EACH NODE IS CONNECTED TO ITS LEFT AND RIGHT
NEIGHBOR NODE.

14. TREE TOPOLOGY
TREE TOPOLOGY CAN BE THOUGHT OF AS BEING A "STAR OF STARS"
NETWORK.

15. MESH TOPOLOGY:
A MESH TOPOLOGY CONSISTS OF A NETWORK WHERE EVERY DEVICE ON THE
NETWORK IS PHYSICALLY CONNECTED TO EVERY OTHER DEVICE ON THE
NETWORK.

16. MODERN
INTERNETWORK

17. INTRANET: The main purpose of an intranet is to share
company information and computing resources among
employees.
EXTRANET: An extranet is a computer network that allows
controlled access from outside of an organization's intranet.
INTERNET: The Internet is a global system of interconnected
computer networks that use the standard Internet protocol
suite (TCP/IP) to link several billion devices worldwide.

18. TYPES OF
COMMUNICATION
IN NETWORK

19. The simplex communication is
the one that travels in only
one direction.
It can send signal in
both directions, but
in only one direction
at a time.
It allows signal transmission in
both directions
simultaneously.

20. THANK
YOU!!!