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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.
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
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
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