A WLAN is a wireless computer network that links two or more devices using wireless communication to form a LAN within a limited area such as a home, school, campus, or office building. It was primarily used as a wireless extension of the last-mile network and was mainly applied in households. At that time, the American people had a strong demand for wireless Internet access due to the cabling difficulties most Americans living in villas with courtyards and the popularity of laptops and tablets.
This in turn accelerated the proliferation of WLANs. WLAN is short for wireless local area network. Quite simply, WLANs provide network communication using radio waves such as lasers and infrared signals, instead of physical connections. They provide wireless network communication using high-frequency radio waves such as those on the 2.
Among them, Wi-Fi is now most commonly used due to its advantages such as simple implementation, reliable communication, high flexibility, and low implementation costs. WLANs are easy to deploy and expand, flexible, and cost-effective. On WLANs, service data is transmitted through radio signals.
As such, service data can easily be intercepted or tampered with by attackers when being transmitted on open wireless channels. To cope with the preceding security threats, differentiated security protection measures are required to protect against network attacks, for example:.
On a WLAN, users require mobile communication. The signal coverage of a single AP, however, is limited. As such, users often move from the coverage area of an AP to that of another AP. Simply put, WLAN roaming is similar to cell handover for a mobile phone. There are three basic physical topologies of LAN — Ring — A loop like structure is formed comprising of computers and these cimoputers tak turns for communicating the message. Bus — All devices are linked with a single transmission line by using a cable.
Star — All devices are connected to a central piece of hardware known as hub. Benefits Resources like hardware, files and softwares are easily shared Flexibility Security Facility for centralized backups Audit trails Cost accounting No need of wires to connect the devices Easy creation of a mesh Wi-Fi Technology is standardized and thus allows one to connect to the network in any country.
Image Courtesy: excellgroup. Add new comment Your name. Plain text. This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Resources like hardware, files and softwares are easily shared Flexibility Security Facility for centralized backups Audit trails Cost accounting. No need of wires to connect the devices Easy creation of a mesh Wi-Fi Technology is standardized and thus allows one to connect to the network in any country.
Get answers from your peers along with millions of IT pros who visit Spiceworks. Hi All, Good Day! Thanks, Noli. Best Answer. Gopal Vembu This person is a verified professional. Verify your account to enable IT peers to see that you are a professional. View this "Best Answer" in the replies below ».
Popular Topics in General Networking. Spiceworks Help Desk. The help desk software for IT. Track users' IT needs, easily, and with only the features you need. Learn More ». Cesar This person is a verified professional. Pure Capsaicin. Robert Dec 7, at UTC. General Networking expert. If you really want to reach the Internet, one connection will work at a time, as you can only have one default gateway at a time. There would be no performance increase anyway, as the connections would go through the same router
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