How does Wi-Fi work? Radio waves are the keys which make Wi-Fi networking possible. These radio signals are transmitted from antennas and routers and are picked up by Wi-Fi receivers such as computers and cell phones that are equipped with Wi-Fi cards. Whenever a computer receives any of the signals within the range of a Wi-Fi network which is usually 300 – 500 feet for antennas and 100 – 150 feet for routers, the Wi-Fi card will read the signals and thus create an internet connection between the user and the network without the use of a cord. Usually the connection speed is increases as the computer gets closer to the main source of the signal and decreases when the computer gets further away.
Wireless LANs have gained popularity in areas such as the health-care, retail, manufacturing, warehousing and academia markets (Kurose, 2003). Some widely known wireless technology in use in devices includes, cameras, automobiles, security systems, and kitchen appliances. Wireless LANs use electro magnetic airwaves (radio or infrared) to transmit information from one point to another without relying on any physical connection (Dean, 2000). Radio waves often are referred to as radio carriers because they simply perform the function to delivering energy to a remote receiver. Networking firms have a range of technologies to choose from when constructing wireless LANs.
The Personal Area Network (PAN) created can operate at a distance up to 100 meters (328 feet) depending on the individual device specifications. Short-range radio waves are transmitted at 2.4 to 2.485GHz using a signal that hops at 1600 hops/sec. A users’ private data is stored and they are able to transfer data with other devices while keeping that data from being publicly available. In order to pair devices securely, there must be an authentication process, key generation, and key acceptance. Paired devices can share voice, data, music, photos, videos, and other information wirelessly (Bluetooth Technology 101: Fast Facts).
• How can you secure the wireless session? • Should Lotus development include wireless devices in their security policies? Research Methods and Procedures Through traditional and electronic research of books, periodicals, and business journals, secondary research was conducted. Figures were constructed through extensive research and study of interactions of networks. Wireless Security Challenges Mobile devices and wireless networks rely on a broad spectrum of technology, much of it cutting-edge.
Hardware access points are available with various types of network interfaces such a... ... middle of paper ... ...d, much less decoded, by simple scanners, short wave receivers etc. You can gain access with specialist equipment. You can protect your data with a function built into 802.11 called WEP (Wired Equivalent Privacy), a form of encryption, which provides comparable privacy as the wired network. Traditional Virtual Private Networking (VPN) will work over wireless networks in the same way as traditional wired networks. IEEE 802.11 standard makes it possible to connect anything that has support for instance PDA’s, cell phones, cars, appliances, computers, body suits, electronic watches, etc.
Furthermore, in multi-hop settings throughput decreases significantly with increasing number of nodes and hops. Therefore improving throughput is a major concern in WMN research. IEEE 802.11 standards define 12 and 3 non-overlapping frequency channels for 802.11a and 802.11b/g respectively which can be used simultaneously to increase the aggregate bandwidth. However, this available bandwidth can... ... middle of paper ... ...re, performance metrics such as delay, jitter, total throughput and packet loss ratio should also be considered by new protocols. • Security.
Below are the main principle why wireless mesh network is one of the network topology that been focusing on: • Higher capacity at low cost compared to other. The capacity of a wireless network can be improved by using a repeater if adding extra node are not worth. But to ensure we have a good coverage, we must know the distance between nodes also any inferences between the nodes. • Easy network deployment since wireless mesh network have a capability for self-configuring to ensure the data transmitted reach at the destination. This is very useful when unexpected thing happen that make the node down for unknown reason.
4. Conclusion This paper reviews the ad-hoc networks and their applications, multimedia data and it’s characteristics, and the problems with possible solutions about transmission of multimedia data over wireless ad-hoc networks. In addition, the transport layer protocols for multipath transport of multimedia data, multimedia traffic partitioning, and a brief information about Multi-flow Realtime Transport Protocol (MRTP). 5. References  Carla-Fabiana Chiasserini.
This significantly weakens wireless signals, thus keeping the signal from broadcasting outside of the specified area. This increases security because it makes it very difficult for hackers to receive the signals from beyond the controlled areas. Conclusion Although all these methods provide some level of security there are ways to bypass them. As technology grows, the ability to bypass the technology also grows. The method of security will have to continue to be improved and enhanced.
Avant Go vs Palm VII There are many people trying to find the best solution for wireless web browsing. At this time there are two major competitors, AvantGo, which uses any standard Palm device with AvantGo Server software installed on the desktop, and AvantGo Client, and Mobile Application Link software installed on the Palm. Then there is the Palm VII device that uses a wireless modem and a connection to a specialized ISP called Palm.net. While using a Palm device with or without a modem, it is possible to access web content. If you have a wireless modem it is possible to dial a traditional ISP and connect to the Internet the same way you would at home with your desktop.