Principles of TechnologyComputing Fundamentals

Unit 4- Networks

Identify what a network is. Describe the benefits of a network. Identify ways to connect to a network. Compare & contrast a client-server network

and a peer to peer network. Describe a LAN. Describe a WAN. Describe the Internet Compare & contrast an Intranet & Extranet.

Objectives

Computers need to communicate with each other

2 or more connected devices◦ Share files & resources

Standards allowed them to “speak the same language”

Computer Networks

Central Storage of files

Share files, resources, printers

Maintain network centrally

Secure

Backup

Network Benefits

Unauthorized shared data

Network failure

Easy to spread malicious programs & viruses

Loss of privacy

Network Disadvantages

NIC Ethernet Cable Wireless NIC Router Cable/DSL/FiOS Modem

Networking Components

Client-Server Network Used in

business/schools

Computers & devices connect to a server

Peer to Peer Network Used at home (NO SERVER) Router allows devices to connect to each other Also allows shared Internet connection

Comcast Cable Modem◦ Through cable TV wire◦ High Speed Broadband

Verizon DSL◦ Over phone line◦ High Speed Broadband◦ Limited distance

Verizon FiOS◦ Over fiber cable line◦ High Speed Broadband◦ Limited areas

Sharing Internet at Home

Look at Modem’s WAN or INTERNET port

Comcast◦ Coax Cable Wire

Verizon DSL◦ DSL Modem connects to Phone Jack◦ Filters on phones

Verizon FiOS◦ Cable Wire

Dial-Up◦ Computer modem to phone jack

Identify what you have?

What Do You Have at Home?

Identify your Internet connection

Add a diagram to your “My Computer” PPT◦ Use pictures of your devices◦ Show wired & wireless connections◦ Show modems/routers and how they connect◦ Don’t forget cell phones, TV’s, video games,

tablets, thermostats, etc.

Assignment

Network Categorized- LAN

LAN◦ Local Area Network◦ Devices connected in small area◦ This classroom, this school, your house

Network categoriezed- WAN

WAN◦ Wide Area Network◦ Connects LANs◦ Over a large geographic area

Internet Originally for government

Largest network

What’s the most commonly used feature on the Internet?◦ Email◦ Email is stored on a server

NOT ON PC

What device allows the sharing of Internet access?◦ Router

What is the purpose of a network?◦ Sharing files & resources

How many wires are in an Ethernet cable?◦ 8

What does LAN stand for?◦ Local Area Network

Review

Intranet Looks like Internet

Private◦ Only works w/in company network◦ Great security

Handbooks, forms, news, policies

Intranet Screenshot

Extranet Private

◦ Allows outside organization to access internal info◦ Extension of intranet

Outside suppliers

Employees

Strict security◦ Username & password

Extranet Screenshots

End of Day Two

Review A room of 5 connected computers describes

a…◦ LAN

To connect to a network, your PC must have a…◦ NIC

This type of “Internet” is for internal use only within a business.◦ Intranet

Principles of TechnologyComputing Fundamentals

Unit 4- Networks