Wireless Computing

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The Best Presentation on the Basics of Wireless Computing

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PowerPoint Presentation:

Made by: Abdullah Zia 8-B5 Wireless Computing

INDEX:

INDEX Definition (Page: 1) Advantages & Disadvantages (Page: 2) Wireless Peripherals (Any 4 ) (Page: 2 ) Wireless Network (Page: 3 ) ADHOC (Page: 3 ) Infrastructure (Page: 3 ) Wireless Technologies (Page: 4 ) Wi-Fi (Page: 4 ) Bluetooth (Page: 4 ) Wireless Internet (Page: 5 ) Wireless Hotspot (Page: 5 ) Wireless Network Adapters (Page: 6 ) WAP & Wireless Range Extender (Page: 7 )

Definition:

Definition The word wireless is dictionary defined as " having no wires ". In networking terminology, wireless is the term used to describe any computer network where there is no physical wired connection between sender and receiver, but rather the network is connected by radio waves and/or microwaves to maintain communications.

Advantages and Disadvantages Wireless Peripherals:

Advantages and Disadvantages Wireless Peripherals Advantages: Flexible if there is ad-hoc situation when additional workstation was required. Implementation cost is cheaper than wired network. Ideal for the non-reachable places such as across river or mountain or rural area. Ideal for temporary network setups. Disadvantages: Lower speed compared to wired network. (of course!) Less secure because hacker's laptop can act as Access Point. If you connected to their laptop, they'll read all your information (username, password, etc.) More complex to configure than wired network. Affected by surrounding. E.g : walls (blocking), microwave oven (interference), far distance (attenuation) Wireless Peripherals: 4

Wireless Network (ADHOC AND Infrastructure):

Wireless Network (ADHOC AND Infrastructure) Wireless networks are computer networks that are not connected by cables of any kind. The use of a wireless network enables enterprises to avoid the costly process of introducing cables into buildings or as a connection between different equipment locations ADHOC: An ad-hoc network is a local area network (LAN) that is built spontaneously as devices connect. Instead of relying on a base station to coordinate the flow of messages to each node in the network, the individual network nodes forward packets to and from each other. Infrastructure: Infrastructure mode wireless networking bridges (joins) a wireless network to a wired Ethernet network. Infrastructure mode wireless also supports central connection points for WLAN clients.

Wireless Technologies (Wi-Fi and Bluetooth):

Wireless Technologies (Wi-Fi and Bluetooth) Wi-Fi (also spelled Wifi or Wi-Fi ) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. A device that can use Wi-Fi (such as a personal computer, video-game console, Smartphone, tablet, or digital audio player) can connect to a network resource such as the Internet via a wireless network access point. Bluetooth is a specification (IEEE 802.15.1) for the use of low-power radio communications to link phones, computers and other network devices over short distances without wires. The name Bluetooth is borrowed from Harald Bluetooth, a king in Denmark more than 1,000 years ago.

Wireless Internet and Hotspot:

Wireless Internet and Hotspot Wireless Internet: enables wireless connectivity to the Internet via radio waves rather than wires on a person's home computer, laptop, Smartphone or similar mobile device. Wireless Internet can be accessed directly through providers like AT&T, Verizon, Nokia, Samsung and Clear wire. Wi-Fi hotspots and wireless LANs are also options for wireless Internet connectivity. A hotspot is a site that offers Internet access over a wireless local area network through the use of a router connected to a link to an Internet service provider. Hotspots typically use Wi-Fi technology. Hotspots may be found in coffee shops and various other public establishments in many developed urban areas throughout the world.

Wireless Network Adaptors:

Wireless Network Adaptors A wireless network adapter allows a computing device to join a wireless LAN. 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. Some notebook computers are now manufactured with built-in wireless networking. Small chips inside the computer provide the equivalent functions of a network adapter.

WAP & Wireless Range Extender:

WAP & Wireless Range Extender Wireless Application Protocol ( WAP ) is a technical standard for accessing information over a mobile wireless network. A WAP browser is a web browser for mobile devices such as mobile phones that uses the protocol. A wireless range extender increases the distance over which a WLAN signal can spread, overcoming obstacles and enhancing overall network signal quality. Several different forms of wireless range extenders are available. These products are sometimes called "range expanders" or "signal boosters."

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