This document provides an industrial training presentation on computer networking. It discusses networking concepts like why networks are used and the basic components required for communication. It also describes different transmission media types like twisted pair cables (STP, ScTP, UTP), coaxial cable, and optical fiber cable. For each media type, it explains the key characteristics, uses, advantages and disadvantages. The presentation aims to educate trainees on fundamental networking concepts and transmission technologies.

1. 2. INDUSTRIAL TRAINING PRESENTATION
ON
COMPUTER NETWORKING
at
I.T.I Ltd NAINI ALLAHABAD(U.P)
Trainee – Gaurav Kumar Rai
roll number- 1309710 906

2. 1. NETWORKING: WHAT AND WHY.
2. THINGS FOR GOOD COMMUNICATION.
3. TRANSMISSION MEDIA.
INDEX:

3. Networking is W&W.
• Networking is a connection of
AUTONOUMOUS computers, which are
interconnected, with the help of a single
technology.
• Basic motto behind establishment a
computer network is
a. Business application.
b. Home application.

4. Application of computer networking..
Business Application
• Sharing of Resources.
• Sharing of
knowledge/Technology.
• Email/E-commerce.
• Communication
purposes.
Home Application
• Access to remote information.
• Person to person
communication.
• Interactive entertainment.
• Electronic commerce.
• Saving money.

5. Things for good communication.
• A SET OF SOURCES.
• A SET OF RECEIVER.
• MESSAGE.
• MEDIUM.
• PROTOCOLS.

6. TRANSMISSION MEDIA
• Any thing that can carry message from source
to a destination.
• The message/information is usually a signal
that is the result of a conversion of data from
another form.
• It can be any wire(guided media) or any other
unguided media(in case of wireless
communication).
• Guided may be STP,ScTp,UTP,co-axial,OPTICAl
fibre. And unguided media is Air.

7. Idea about media cables:
STP-
• Shielded twisted-pair cable
combines the technique of
shielding , cancellation,
Twisting of wires. Each pair of
wires is wrapped in metallic
foil.it is usually 150 ohm
cable. Also known as FTP.
Use- Ethernet network
installation.
Sctp-
• ScTp is essentially UTP
wrapped in a metallic foil,or
screen.
• It usually 100 or120-ohm.
• The metallic shielding
materials in STP and sctp need
to be grounded at both ends.
• If any discontinuties are
present then it become to be
major noise problems through
shield who act like an antenna
• Picking up unwanted signals.
• However STP & Sctp still have
their role in Europe.

8. UTP
• Utp is a four-wire medium-composed of pair of wires-
used in a variety of networks.
• Each pair of wires is twisted around each other.
• Utp has an external diameter of
approx.43cm,its small size can be advantageous
during installing a network in older building.
• When utp cable is installed using an RJ
connector,potential sources of network noise are
greatly reduced and a good solid connection is
practically guaranteed.

9. Networking media
3). Coaxial cable:
For LANs co-axial cable
offer
Several advantages-
covering longer
distance,can run without
repeaters.
Larger diameter &
variation in size and more
expensive to install than
twisted pair.
 4.Optical fiber cable.
• Speed &throughput:
100+mbps
• Average per node: Most
expensive.
• Media &connector size:
small.
• Single mood(laser
generated light),max.cable
length:up to 3000m
• Multimode (Led generated
light):upto 2000m.

10. Thank you..