|
 |
 |
|
Support FAQs |
- What is Wi-Fi?
Wi-Fi stands for Wireless Fidelity and is used to define any of the wireless technology in the IEEE 802.11 specification - including wireless protocols 802.11a, 802.11b, and 802.11g. The industry body called Wi-Fi Alliance is responsible for promoting Wi-Fi along with various other wireless technology standards.
- What are the differences between various IEEE 802.11 standards?
IEEE 802.11 are standards that have been developed by the IEEE (Institute of Electrical and Electronic Engineers). The IEEE is an international organization that develops standards for hundreds of electronic and electrical technologies.
802.11 is then further divided: 802.11b, or Wi-Fi, is a standard for wireless LANs operating in the 2.4 GHz spectrum with a bandwidth of 11 Mbps. 802.11a is a different standard for wireless LANs operating in the 5 GHz frequency range with a maximum data rate of 54 Mbps. 802.11g is for WLANs operating in the 2.4 GHz frequency but with a maximum data rate of 54 Mbps. Other IEEE task groups are working on enhanced security (802.11i), spectrum and power control management (802.11h), quality of service (802.11e).
- What is ah-hoc and infrastructure mode?
In Ad-hoc mode, the wireless-equiped computers are configured to communicate with each other directly. However, these computers will not be able to communicate with other wired network computers. In Infrastructure mode, the wireless-equipped computers are configured to communicate with each other using a wireless access point.
- What is ISM band?
ISM band is a unlicensed frequency spectrum set aside by FCC and its counterparts in other countries. This spectrum lies in the vicinity of 2.4 GHz and is available for free usage. Microwave ovens, cordless phones and Wi-Fi equipments are some examples that use this band.
- What is Spread Spectrum?
Spread Spectrum technology is a wideband radio frequency technique. It is designed to trade off bandwidth efficiency for reliability, integrity and security. So, more bandwidth is consumed than in the case of narrowband tramission, but the trade-off produces a signal that is easier to detect. If the receiver is not tuned to the right frequency a spread-spectrum signal looks like background noise. There are two different types of spread spectrums - Direct Sequence Spread Specturm (DSSS) and Frequency Hopping Spread Spectrum (FHSS)
- What is a MAC Address?
MAC (Media Access Control) address is a unique number that is assigned by the manufacturer to any Ethernet device such as network adapter that allows the network to uniquely identify the device. Unlike IP address, which may change every time, the MAC address of the device is constant thus making it important for networking.
- What are channels?
The ISM frequency band is further divided into various channel. The Wi-Fi devices operates in one of these channels to receive and transmit the data.
Channel 1 - 2,412 MHz
Channel 2 - 2,417 MHz
Channel 3 - 2,422 MHz
Channel 4 - 2,427 MHz
Channel 5 - 2,432 MHz
Channel 6 - 2,437 MHz
Channel 7 - 2,442 MHz
Channel 8 - 2,447 MHz
Channel 9 - 2,452 MHz
Channel 10 - 2,457 MHz
Channel 11 - 2,462 MHz
- What is Bridging Mode?
In Wi-Fi, the bridging mode allows two or more wireless access points to communicate with each other for the purpose of joining multiple LAN segments. Some wireless bridges support only single point-to-point connectivity while others support point-to-multipoint connections to other access points.
- What is repeater mode?
The repeater mode is a variation of bridging mode. Rather than joining multiple LANs, an access point working as repeater mainly increases the range of the single wireless LAN by extending the same wireless signal over large area.
- How can I improve the receptivity of my Wi-Fi Signal?
There are several options to increase the range of your Wi-Fi signal:
1. Use a USB wireless network adapter with an external antenna.
2. Use an external antenna
3. Check the transmission power settings on the network adapters
- How can I increase the range of my wireless network?
To increase the range of your wireless network you can do the following:
1. Reposition your access point or gateway to avoid obstructions or interferences.
2. Upgrade the antenna on your router
3. Connect another access point to increase the coverage area
4. Add a bi-directional signal amplifier
5. Add a wireless repeater
|
|
|
