Wireless NetworkingTutorial

Janie Mohajerinand

Alton Wilson

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Instructions

• To move to the next part of the tutorial press:

• There will be quizzes after each section. START

Section 1: Network Protocols of Wireless Networking

• A network protocol defines rules and conventions for communication between network devices.

• Network protocols include mechanisms for devices to identify and make connections with each other, as well as formatting rules that specify how data is packaged into messages sent and received.

• Hundreds of different computer network protocols have been developed each designed for specific purposes and environments.

Types of Network Protocols HTTP

• HTTP (Hypertext Transfer Protocol) • Provides a standard for web browsers and

servers to communicate• Communicate using HTTP responses and

messages

Types of Network ProtocolTCP / IP

• TCP (Transmission Control Protocol) – corresponds to the transport layer

• IP (Internet Protocol)- corresponds to the network layer

• The terms are often used interchangeably • The average person on the Internet works in a

predominately TCP/IP environment. Web browsers, for example, use TCP/IP to communicate with Web servers.

Quiz Time Section 1

Answer the following questions to see what you have learned about protocols.

Click the to choose your answer.

Begin Quiz

Question 1

How many different network protocols are there?

A. Two : IP and TCP B. One: HTTP C. There are hundreds

CORRECT!!!!

• C. There are hundreds because protocols have been designed to serve different environments and purposes

• Move on to question 2

NOPE… try again!!!

• Go Back to Quiz

Question 2

• Which protocol provides a standard for web browsers and servers to communicate?

A. HTTP B. IPC. TCP

CORRECT!!!

• HTTP provides a standard for all web browsers.

• Move to Question 3

So SORRY… So Wrong!!

• Back to Quiz

Question 3

• The average person on the Internet uses this protocol to communicate with Web browsers.

A. HTTP B. IP or TCP C. Network

CORRECT!!

• The average person on the Internet works in a predominately TCP/IP environment. Web browsers, for example, use TCP/IP to communicate with Web servers.

• Move on to Section 2

No… sorry. Try again.

• Back to quiz

Section 2: Standards of Wireless Networking

• 802.11 is the generic name of a family of standards for wireless networking related to Wi-Fi.

• The numbering system for 802.11 comes from the IEEE, who uses "802" to designate many computer networking standards including Ethernet.

IEEE

• In 1997, the Institute of Electrical and Electronics Engineers (IEEE) created the first WLAN (Wireless Local Area Network) standard.

• They called it 802.11 after the name of the group formed to oversee its development.

Types of Standards:Wi-Fi Technologies

• 802.11a• 802.11b• 802.11g• 802.11n (the newest standard)

Pros and Cons of 802.11n

• Pros of 802.11n – fastest maximum speed and best signal range– more resistant to signal interference from outside

sources • Cons of 802.11n – standard is not yet finalized; costs more than

802.11g– the use of multiple signals may greatly interfere

with nearby 802.11b/g based networks.

Networking Standards VideoStandards Compared

Click to view video

Quiz Time Section 2

Answer the following questions to see what you have learned about protocols.

Click the to choose your answer.

Begin Quiz

Question 1

What is the name for the family of wireless networking standards?

A. IEEE B. WLAN C. 802.11

No Sorry… that’s just wrong.

Back to Quiz

Correct!!!

• 802.11 is the generic name of a family of standards for wireless networking related to Wi-Fi.

Continue to Question 2

Question 2

• What is IEEE?

A. A unique standard B. Creator of standardsC. Creator of WLAN

Correct!!!

• In 1997, the Institute of Electrical and Electronics Engineers (IEEE) created the first WLAN (Wireless Local Area Network) standard.

Continue to Question 3

Naaaahhh… try again.

Back to Quiz

Question 3

According to the video, what is the best standard available today?

A. 802.11n B. 802.11gC. 802.11b

Correct!!!

– fastest maximum speed and best signal range– more resistant to signal interference from outside

sources

Continue to Section 3

Nope.. Try again

Back to Quiz

Section 3: Wireless Networking Equipment

• Network Routers • Access Points • Adapters• Print Servers• Range Extender

Network Routers

•These routers support all home computers configured with wireless network adapters.• They also contain a network switch to allow some computers to be connected with Ethernet cables. •Wireless routers allow cable modem and DSL Internet connections to be shared. •Many wireless router products include a built-in firewall that protects the home network from intruders.

Access Points

• Used with routers to join the wireless client to the Ethernet network. • Commonly used in large office buildings. • Can be used in the home to extend the home network.

Adapters

• Allows a computing device to join a wireless LAN (Local Area Network).

• Wireless network adapters contain a built-in radio transmitter and receiver. Each adapter supports one or more of the 802.11a, 802.11b, or 802.11g Wi-Fi standards.

• Most notebook computers are now manufactured with built-in wireless networking. Small chips inside the computer provide the equivalent functions of a network adapter. These computers obviously do not require separate installation of a separate wireless network adapter.

Print Servers• Allows one or two printers to be conveniently shared across a WiFi network.

•Wireless print servers offer the following advantages: •Allows printers to be conveniently located anywhere within wireless network range, not tied to the location of computers •Does not require a computer be always turned on in order to print •Does not require a computer to manage all print jobs, that can bog down its performance •Allows administrators to change computer names and other settings without having to re-configure the network printing settings.

Range Extender• A wireless range extender connects via Wi-Fi to a router or access point.• Increases the distance over which a WLAN signal can spread, overcoming obstacles and enhancing overall network signal quality.

Quiz Time: Section 3

Answer the following questions to see what you have learned about protocols.

Click the to choose your answer.

Begin Quiz

Question 1 Name the Hardware in the picture

A. Range Extender

B. Print Server

C. Access Point

No… Try again

• Back to Quiz

CORRECT!!!

• Print Server

• Continue to Question 2

Question 2Name the Hardware in the picture

A. Adapter

B. WLAN

C. Router

NO.. Sorry.. Way off.

• Back to Quiz

CORRECT!!!

• Wireless Adapter

• Continue to Question 3

Question 3Name the Hardware in the picture

A. Access Point

B. Wireless Network

C. Wireless Router

No… do over…

• Back to Quiz

CORRECT!!!

• Wireless Router • Access points are found within the, router but

they are not the router.

Bluetooth

• What is Bluetooth?

Click to View

Bluetooth

Bluetooth allows devices to communicate with each other over short distances.

Bluetooth was invented by the Ericsson company in 1994

Common Devices Utilizing Bluetooth

Features of Bluetooth

• Wireless • Inexpensive• Automatic• Ease of use

Wi-Fi vs Bluetooth

• Wi-Fi is intended to replace cables in a network.

• Bluetooth was created for communication between devices over a short range.

Quiz Time Section 4

Answer the following question to see what you have learned about Bluetooth.

Click the to choose your answer.

Begin Quiz

Question

• One of the Features of Bluetooth is

• 1) Long Range• 2) Automatic • 3) Wi-Fi

Oops Try Again

Back

Correct

Next

Cell Phone Data Networks

• Better known as “Cellular Networks”• The network is distributed over areas called

“Cells”• Each cell has a transceiver called a “Base

Station”

Cellular Networks

• In a cellular radio network the coverage area is divided into regular shaped cells.

• Each cell has multiple frequencies. • Cells were established because multiple

frequencies could be used over shorter ranges.

Cell Diagram

Cell to Cell

• The cellular network system allows wireless communication over large areas

• Calls/Data is switched or handed off from one cell to another

Cellular Networks

• Sprint and Verizon networks use Code Division Multiple Access (CDMA).

• AT&T and T-Mobile use Global System for Mobile communication (GSM) technology.

• Tri-band, quad-band, or "world phones" operate on Global System for Mobile communication (GSM) networks in the U.S. and abroad.

Quiz Time Section 5

• Answer the following question to see what you have learned about Cell Phone Networks.

• Click the to choose your answer.

Begin Quiz

Question

• The network is distributed over areas called

1) Cells 2) Stems 3) Acres

Oops Try Again

Back

Correct

Next

Advantages of Wireless Networking

• Flexible: Multiple devices used over a network• Cost: Less expensive than wire• Convenience: Easy connectivity• Mobility: Allows for movement• Idea for temporary network setups• Works well in rural areas

Disadvantages of Wireless Networking

• Security: possibility of information theft• Limited functionality: Affected by walls,

distance• Slower speeds: Slower than wired• Changing technology: Continual upgrades in

technology• More difficult to configure

Quiz Section 6

Answer the following question to see what you have learned about Cell Phone Networks. Click the to choose your answer.

Begin

Question

Security is an advantage of wireless networks.

True False

Oops Try Again

Back

Correct

• You have now completed the Wireless Networking Tutorial

Resources• About.com: Wireless / Networking. (photos and information) Retrieved

from: http://compnetworking.about.com/od/wireless80211/g/bldef_80211x.htm

• Bluetooth. Retrieved from : http://www.bluetooth.com/Pages/Bluetooth-Home.aspx

• Bluetooth operation. Retrieved from : http://www.youtube.com/watch?v=e1p4c7Gf8d8

• Cellular network. (2012, April 2). In Wikipedia, The Free Encyclopedia. Retrieved 16:10, April 9, 2012, from http://en.wikipedia.org/w/index.php?title=Cellular_network&oldid=485085255

• Wireless networking video tutor. (video) Retrieved from: http://www.youtube.com/watch?v=x-51DcbmjU8&feature=youtu.be