Networks
Networks Unit
 This
unit will be split into Assignments and
Tasks
 The
tasks will have different criteria: P,M,D
(this will help prepare you for Year 9!)
P
= Everyone should complete
 M = Most people should attempt
 D= Some people should attempt
Starter Activity





Sorta Sentence
1 envelope per table
Open it and layout all the cards
Sort the cards so that you construct a proper sentence
Answer: A computer network is where two or more
machines are connected together with the purpose of
sharing files and hardware peripherals. If the computers
are the same building they are usually connected to
form a Local Area Network. If they are a long distance
from one another they could be part of a Wide Area
Network.
WALT
 How
networks can improve
communication
WILF
 All
students to understand how networks can
improve communications
 Most Students to explain how networks may
improve productivity for individuals and
organisations
 Some Students to suggest possible issues that may
result from networking
What is a Network?


A computer network is a group of computers connected
to each other electronically. This means that the
computers can "talk" to each other and that every
computer in the network can send information to the
others. Usually, this means that the speed of the
connection is fast - faster than a normal connection to
the Internet
Some basic types of computer networks include:


A local area network (often called a LAN) connects two or
more computers, and may be called a corporate network in
an office or business setting
An "internetwork", sometimes called a Wide Area Network
(because of the wide distance between networks) connects
two or more smaller networks together. The largest
internetwork is called the Internet
What does it REALLY mean?
 When
computers were first developed, they were
mainly intended for people to work on their own
machine
 One day, someone really clever thought ‘wouldn’t
it be a good idea to link 2 machines together so
that it can share files?’
 And so, the first computer network was created!
Sharing Stuff
A
computer connected to a Network is
called A WORKSTATION
 Once connected to a network your
workstation can share things with other
computers

Printer
 Why?

Files
 Why?
ASSIGNMENT 1: What’s the
use?

Task 1: How networks can improve
communications (P1)

Task 2: Explain how networks may improve
productivity for individuals and organisations
(M1)

Task 3: Suggest possible issues that may result
from networking (M2)

HINT - Data Protection
Task 1: How networks can
improve communications (P1)
 Make
a list of all the different hardware
and software communication devices you
can think of
Communication
Communication - Hardware
 Computers
 Netbooks
 Laptops
 Mobile
Phones
 Smart Phones
 Satellite Phones
 Walkie-Talkie
Extension Task
 For


each device answer these questions:
What do they do?
How does this help us to communicate?
Communication - Software
 Instant
Messengers
 Browsers
 Whats App
 Facebook
 Twitter
 Email
 Xbox Live
 PS3 Network
How do these devices help
with productivity?
Productivity
“A measure of the efficiency of
a person, machine, factory,
system, etc., in converting
inputs into useful outputs.”
Task
 Choose
1 piece of hardware and 1 piece
of software that you use the most



Tell us what you use them for
Explain / describe how it makes your life
easier
Explain / describe any issues you might
have or it might cause
Plenary / Homework




Attempt the exam question about the impact of network
communications.
Bring with you to the next lesson – We will mark it as a
class!
Complete the following question: [6 marks available]
Computer technology has changed the ways in which
teenagers interact with each other. Explain how
developments in software and hardware have enabled
new methods of communication among teenagers.
8L1 – 22nd November
Task 2
Individuals & Organisations
Individuals
• Facebook is a social network that is used by over 200
million people.
• Facebook helps individuals by that they can add all their
friends, upload photo’s, keep in contact with friends,
make groups, make events and make posts on how you
are, or what you are doing. The idea of Facebook for
individuals is to keep in touch with each other.
• Facebook can come in handy for individuals because they
can chat to mates, see what events or friends birthdays
are coming up.
• A fair amount of Facebook users are between the ages of
12-21, so it can distract the user if they have homework
or coursework. It’s very easy for cyber bullying to take
place on Facebook, also a lot of bullying and racism
Organisations
•
Organisations can use Facebook for advertising,
they can make a Facebook group or likes.
•
Also they can get their logo, advert or item they
are selling shown on profiles down the right side of
the page.
•
The organisations that want to do this have to pay
Facebook a set amount of money for the
advertising slot.
•
A lot of people use Facebook so it’s a good way to
pull in new costumers.
Task 2: Explain how networks
may improve productivity for
individuals and organisations
(M1)
 Make
a poster that explains how
networks can improve
communications for individuals and
organisations.
Task 3
Issues with Networking
Starter
 What
problems can people have when
using networks to communicate?
People
Businesses
Starter
People
Businesses
• Difficulty communicating
via calls, texts, emails and
social networks
• Missing appointments
• Losing work
• Can’t save homework
• Problems with internet
banking
• Doing homework is harder
• Can cost money
• Can stop people being
productive
• Unable to exchange
information
• No access to files
• Cannot print or save your
work
• Emails cannot be sent
• Phone switchboards can
stop
• Can’t transfer money
electronically
WALT
 How
networks can improve
communications for individuals and
organisations
 What issues networks can have and what
impact they have on individuals and
organisations
Why a network might go down
 Power
Surge
 System Overload / too many users
 Faulty Equipment
 Cyber Attack / Terrorists
 Hackers
 Server Problems
 Cables removed / fallen out
 Viruses
 Power Cut
WILF
 Complete
your poster that clearly
discusses how networks IMPROVE
communications for both individuals and
organisations

Use relevant pictures and explain your
thoughts
 Research
the possible issues that you
could have when using networks when
communicating, both for individuals and
organisations
Task 3: Suggest possible issues that
may result from networking
 Using
the internet, research what kinds of
issues both individuals and organisations
can have when using networks to
communicate
 Type an essay (1 A4 page, font size 12) that
explains the types of issues you can have
 You
should be looking for problems, how to
resolve them and what the impact is on
people and businesses
Homework
 Write
down 3 questions that you could ask
the IT Technicians about the network here
at school
 It can be anything from how it is set up to
what equipment they use and how they
manage it

Due: 20th December
Networks
8ITP2
WALT
 To
understand the features and uses of
local and wide area networks
WILF
 Level
4 = Complete the exam style theory task
using the internet to help you (searching &
selecting information)
 Level 5 = Design a leaflet that tells you all about
the different types of networks (WAN and LAN) – it
must explain clearly what they both are with
pictures)
 Level 6 = Devise your own LAN for your home,
include all the gadgets and computer accessories
you use
WAN & LAN Explained
Networks
A network is two or
more computers
connected together so
they can communicate
which each other.
There are 2
main types of
network…
Networks: LANs
LAN
stands
for:
LOCAL
AREA
NETWORK
LANs are networks that
are found where
computers within a
building need to
communicate.
Types of LAN are:
>Peer-to-peer
>Client-server
They are Small and Local!
Peer-to-peer

Here, two or more
computers are
connected directly so
that employees doing
the same kind of work
can share applications
and data.

This system tends to be
very slow, but it is
robust as it does not
rely on a central server
which can fail.
Client-server



Here, one powerful
computer in the
network acts as a
server to all the others
The server computer
holds all the
application software
and the shared files
All the files are stored
centrally and users
have the possibility of
working on the same
file at the same time
Networks: WANs
WAN
stands
for:
WIDE
AREA
NETWORK
WANs are networks that
are found where
computers in different
areas or countries need
to communicate.
They are long range and not local!
Task 1 – Level 4
 Open
up the Word Document called 8ITL2
– Theory

S:\ICT\2013-14\KS3\Year 8\Networks
 Click
on the link in the Word Document
(remember to hold the CTRL key when
you click!)
 You will be taken to a ‘micro-site’ (a mini
website) that gives you the answers
 Answer the questions using the micro-site
to help you
Task 2 (Level 5)
 Design
a leaflet that tells you all about the
different types of networks (WAN and
LAN) – it must explain clearly what they
both are with pictures)
Task 3 (Level 6)
 Devise
your own LAN for your home,
include all the gadgets and computer
accessories you use


Draw a picture of all the gadgets and
computers that you have at home
Link them all together using the theory you
have learnt from this unit
 E.g.
Wireless Router is linked to Laptop,
Desktop PC, Printer, Scanner, Xbox 360 etc.
Plenary
 Questions


& Answers
Answer the questions we have written for
homework as if you were the IT Technicians
Can you link your theory to the answer?