Introduction to Network

3.1 Network

Learning Outcome

Define network
a.

Describe several
uses of network

At the of this lesson, students should
be able to:

b.

Define Network
3.1.1

Define Network

A network is a collection of computers and
other hardware devices connected together.

Network users can share hardware, software, and
data, as well as communicate with each other
electronically.

Computers and other hardware devices refers to - computers,
smart phones, tablets, printers, scanners, ATM machines, and
kiosks.

Define Network

Multiple Choice

What is a Computer Network?

• House Wifi connection

• It is the internet connection

• One or more devices connected together to communicate

• Routers connected together

Multiple Choice

What is a Wireless Connection?

• A router connection to a device/computer

• A connection that provides internet and doesn’t need wires to connect

• A local area network (LAN)

• One or more devices connected together.

DESCRIBE SEVERAL
USES OF NETWORK
3.1.2

Several Uses of Network

The Internet
01

03
04

02

05

Telephone Service

Television and Radio
Broadcasting
Global Positioning System
(GPS)

Applications Monitoring
Systems

Multimedia Networking
06

08
09

07
Videoconferencing

Collaborative Computing and
Telecommuting

Telemedicine

Several Uses of Network

•Internet is the largest computer network in
the world.

•Internet allows many networking
applications to take place such as
information retrieval, shopping,
entertainment, accessing web and
exchanging e-mail.

1. The Internet Applications

Multiple Choice

What is the most accurate definition of the Internet?

• Packets that are sent from one device to another

• A network with computers/devices connected to each other to communicate with one another.

• A connection provided by a Server

• A wireless connection

Several Uses of Network

•Telephone network was one of the first
communications networks provides
telephone service to conventional
landline phones.

•Mobile phones are phones that use a
wireless network for communications.

✔

Cellular (cell) phone - communicates
via cellular technology.

✔

Satellite phone – communicates via
satellite technology

2. Telephone Service

Several Uses of Network

•Broadcast Television Network- telecommunications network for
distribution of television program content to many television stations
providers.

•Broadcast Radio Network - transmission of audio (sound) by radio
waves to radio receiversbelonging to a public audience.

✔Most of the tv and radio content today are also made available via the
Internet.

• Other network involved with video content delivery are cable TV

network, satellite TV network and private closed-circuit television
(CCTV) systems

3. Television and Video Broadcasting

Several Uses of Network

• GPS is a satellite navigation system used to

determine the ground position of an object.

• Most smartphones today include GPS capabilities

which allow the use of location-specific services
and applications such as using your location in
Web searches, social media activities, and
self-guided tours.

• GPS receivers are commonly used:

✔ by individuals to determine their geographic

location while hiking and to obtain driving
directions while traveling.

4. Global Positioning System (GPS)

Several Uses of Network

• GPS receivers are commonly used:

✔on the job, such as by surveyors, farmers, fishermen, and public safety
personnel

4. Global Positioning System (GPS)

Surveyors

GPS

Farmers

GPS

Fishermen

GPS

Several Uses of Network

• GPS receivers are commonly

used:

✔to guide vehicles and equipment to
locate and dispatch ambulances,
police cars, and other emergency
vehicles.

✔to guide bulldozers and other
construction equipment
automatically using that device’s
pre-programmed instructions

4. Global Positioning System (GPS)

Several Uses of Network

• GPS receivers are commonly used:

✔to guide munitions and trucks, as well as to track military aircraft, ships,
and submarines

4. Global Positioning System (GPS)

guide munitions formilitary aircraft

guide torpedo for submarine

Multiple Select

GPS receivers are:

• Built into many mobile devices

• Available as a handheld device

• Available with new vehicles

• Available in a coffeehouse or restaurant

Several Uses of Network

•Monitoring systems is a networking technology to determine the current
location or status of an object.

•RFID tags and RFID readers is used to monitor the status of the objects
such as shipping boxes, livestock, or expensive equipment to which the RFID
tags are attached.

5. Applications Monitoring System

RFID tags and RFID readers
to monitor shipping boxes

RFID tags and RFID readers

to monitor livestocks

Several Uses of Network

5. Applications Monitoring System

There are monitoring systems that use GPS technology such as:

•many law enforcement ankle bracelet
monitoring systems use GPS to detect if the
offender has left his or her authorized areas.

•the OnStar system built into many GM

cars uses GPS to locate vehicles when
the occupant activates the service or
when sensors indicate that the car was
involved in an accident.

ankle bracelet monitoring

system

GPS system for vehicle

emergency

Several Uses of Network

5. Applications Monitoring System

There are monitoring systems that use GPS technology such as:

•Vehicle monitoring systems that are installed in cars by parents and employers
to monitor the location and use of the vehicles by children or employees using
networking technology

vehicle monitoring systems

Several Uses of Network

6. Multimedia Networking

The used of networks to deliver multimedia
content to devices on the home network is
keep increasing.

•Multimedia content includes digital photos,
digital music, home movies, streaming
movies and home entertainment system

•Devices can be computers, mobile devices,
television and home entertainment system.

Home networks are also used to connect
smart TVs to the Internet.

Several Uses of Network

5. Applications Monitoring System

There are monitoring systems that use GPS
technology such as:

•Child monitoring systems allow parents to monitor
the physical locations of their children.

•GPS systems are also designed to be used to
track elderly parents or by individuals who are
hiking or traveling so they can be located if they
become lost or injured.

Child monitoring systems

GPS tracker for elderly

Several Uses of Network

7. Videoconferencing

The use of networking
technology to conduct
real-time, face-to-face
meetings between
individuals physically
located in different places.

Multiple Choice

John attached a camera that broadcasts sound and video

on the Internet.

• codec

• webcam

• multipoint videoconference

• webkam

Several Uses of Network

8. Collaborative Computing and Telecommuting

Collaborative computing - a networking technology with collaborative
software tools to enable individuals to work together on documents and
other project components.

Collaborative computing - a networking technology with collaborative
software tools to enable individuals to work together on documents and
other project components.

Collaborative computing

Telecommuting

Several Uses of Network

9. Telemedicine

• Telemedicine - the use of networking technology to provide medical

information and services.

• Patients can access websites to contact their physicians, make

appointments and view lab results.

• Physicians can use videoconferencing robots to communicate

remotely with other physicians or with hospitalized patients.

• Physicians can also use telemedicine to perform remote diagnosis

of patients.

Several Uses of Network

9. Telemedicine

• Telesurgery—a form of robot-assisted surgery where a robot

controlled by a physician remotely do operations on the patient.

Telemedicine

Telesurgery

Multiple Choice

1. Telemedicine is the use of medical information exchange from one site to another via

• electronic communication

• written communication

• verbal communication

• print communication

Multiple Select

What is the advantages of a network?

• Facilitating communications

• Sharing hardware

• Sharing data and information

• Sharing software

Multiple Select

Which of the following are the examples of communication devices?

• modems

• wireless access points

• routers

• network cards

Thank You