Wireless FAQ
Q1: What is Wireless Network?
A:
Wireless network refers to any type of computer network that is wires, and is commonly associated with a telecommunication network where the transfer of information is implemented without the use of electrical conductors or wires. The application of wireless is no different than wired network; however, the biggest difference is based on the medium for transferring information. Besides this, either on the usage or setup of the hardware, wireless network is much better than wired network.
 

Q2: Wired  VS. Wireless
A:
Wireless networking is becoming more popular nowadays.
Advantages of Wireless Networking:
  • Portable & Flexible: Access to Internet anywhere
  • Cost Effective
  • Neat & Safe: no cluster of cables.
Advantages of Wired Networking:
  • Fast and Reliable connections
  • Secure

 

Q3: What about 802.11a/b/g/n?
A:
These are other standards for wireless networks that have been established by the IEEE (Institute of Electrical and Electronics Engineers, Inc), the group with regulatory responsibility over this technology.
 
802.11b often called Wi-Fi. Most of the discussions in this FAQ refer to the 802.11b standards since this technology is the most firmly established for home use. 802.11b uses the same unregulated radio signaling frequency (2.4 GHz) as the original 802.11 standard. Vendors often prefer using these frequencies to lower their production costs. Being unregulated, 802.11b gear can incur interference from microwave ovens, cordless phones, and other appliances using the same 2.4 GHz range. However, by installing 802.11b gear a reasonable distance from other appliances, interference can easily be avoided.

802.11a applies to wireless LANs in the 5GHz band and provides speeds up to 54 Mbps. Access points and adapters are on the market. This is 5 times faster than the 802.11b, however, there are no CF cards in this format and since they run at on a different radio band, they are not directly compatible with 802.11b networking products.
 
802.11g is the latest set of approved standards and is rapidly becoming the most common equipment for home networks. It runs on the same band (2.4GHz) as 802.11b and the original proposed standards allowed for speeds comparable to the 802.11a (54 Mbps). However, in order to make the equipment backwards compatible with 802.11b, the final standards only provide for speeds up to 20 Mbps when operated in mixed mode.
 
802.11n is the newest IEEE standard in the Wi-Fi category is 802.11n. It was designed to improve on 802.11g in the amount of bandwidth supported by utilizing multiple wireless signals and antennas (called MIMO technology) instead of one. When this standard is finalized, 802.11n connections should support data rates of over 100 Mbps. 802.11n also offers somewhat better range over earlier Wi-Fi standards due to its increased signal intensity. 802.11n equipment will be backward compatible with 802.11g gear.
 
 
Q4: What is an AP?
A:
A Wireless Access Point (AP or WAP) is a device that allows wireless communication devices to connect to a wireless network using Wi-Fi, Bluetooth or related standards. It acts as a central transmitter and receiver of WLAN radio signals.
 

Q5: If I want to setup a Wireless Networking, what kind of basic equipments are needed?
A:
When using Infrastructure mode, you'll need an Access Point, a wireless adapter for each system you're connected, plus a Wireless LAN card. When using Ad hoc mode, two Wireless LAN Cards will be needed.
 
 
Q6: Will Wireless Network be interrupted easily or affect the operation of other equipments?
A:
802.11 uses ISM 2.4GHz. This frequency band is designed for Industrial, Scientific, and Medicine uses; therefore, there will be some level of influence.
 

Q7: Does Wireless Network pose any health risks?
A: 
Wireless networks emit substantially less electromagnetic radiation than cell phone or even microwave ovens, usually around 60~70mW compared to 200mW emitted by cell phones. Thus, they are not known to effect human health.
 
According to a September 2008 article in "The Province," a Canadian newspaper, the World Health Organization has completed a 10-year study than concludes that "the amount of non-ionizing radiation absorbed by a person's body from a Wi-Fi station is less than one-fifth that they receive from FM radio and TVs that surround them day and night."