Wireless networks: a network that connected the two or more computers using radio signals, perfect for sharing files, printers, or access the Internet.
Sharing source files and move move them without using cables.
Easy to set up and reliable making it suitable for use in the office or at home.
Products from different manufacturers are sometimes not compatible.
The price is more expensive than using a regular wired Ethernet technology.
If you want to connect your two computers or more in a location that is difficult or impossible to install a network cable, a wireless network (without cable) may be appropriate to apply. Every PC on the wireless network is equipped with a radio transceiver, or usually called a LAN adapter or wireless card, which will send and receive radio signals to and from other PCs on the network. You will get a lot of adapters with internal and external configurations, for both desktop and notebook PCs.
Similar to wired Ethernet network, a wireless LAN to send data in packets. Each adapter has a number of permanent and unique ID that serves as an address, and each packet contains data in addition to also include the address of the recipient and sender of the packet. Same with an Ethernet adapter, a wireless LAN card will check the condition of the network before sending the packet to it. When the network empty, then the packet is sent immediately. When the card detects the presence of other data that are using radio frequency, it waits for a moment and then check it again.
Wireless LAN typically uses one of two topology - how to set up a network. In ad-hoc topology - commonly known as peer-to-peer - every PC is equipped with a wireless LAN adapter that sends and receives data to and from other PCs equipped with the same adapter, within a radius of 300 feet (± 100 meters). For infrastructure topology, each PC to send and receive data from an access point, which is mounted on a wall or ceiling of a small box antenna. When the access point receives data, it sends back radio signals (with a range of more distant) to the PC that are in the area of coverage, or can transfer data via an Ethernet network cable. Access point on a network infrastructure has a larger coverage area, but need a tool with a more expensive price.
Although using the same working principle, the speed of sending data and the frequencies used by different wireless LANs based on the types or products manufactured, depending on the standards they use. Wireless LAN vendors typically use several standards, including IEEE 802.11, IEEE 802.11b, OpenAir and HomeRF. Unfortunately, these standards are not mutually incompatible with each other, and you must use the type / same product in order to build a network.
All these standards use an adapter to use small segments at 2.4-GHz radio frequency, so that the radio bandwidth to transmit the data to be small. But the adapter uses two protocols to improve the efficiency and security in sending the signal:
· Frequency hopping spread spectrum, where packet data is broken down and delivered using different frequencies, one alongside other denominations, so that all data sent and received by the PC in question. The speed is very high frequency signals, and by solving the data packet, the system provides the required security within a network, as most ordinary radio transceiver can not be followed.
Direct sequence spread spectrum, a method in which a radio frequency divided into three equal parts, and deploy the entire package through one of these frequencies. Adapter direct sequence will encrypt and decrypt data in and out, so people who do not have the authority only hear a hiss sound only if they capture the radio signals.
Wireless LAN vendors are usually mention the maximum transfer rate on their homemade adapters. Models that use the 802.11 standard to transfer data up to 2 megabits per second, both with the method of frequency hopping or direct sequence. Adapter that uses OpenAir standard to transfer data up to 1.6-Mbps using frequency hopping. And the latest standard, HomeRF can send and receive data with speed 1.6-Mbps (using the method of frequency hopping). High-speed wireless LAN using 802.11b--the standard known as WiFi - unable to send data up to 11-mbps with direct sequence protocol. (Infokomputer.com)
Sharing source files and move move them without using cables.
Easy to set up and reliable making it suitable for use in the office or at home.
Products from different manufacturers are sometimes not compatible.
The price is more expensive than using a regular wired Ethernet technology.
If you want to connect your two computers or more in a location that is difficult or impossible to install a network cable, a wireless network (without cable) may be appropriate to apply. Every PC on the wireless network is equipped with a radio transceiver, or usually called a LAN adapter or wireless card, which will send and receive radio signals to and from other PCs on the network. You will get a lot of adapters with internal and external configurations, for both desktop and notebook PCs.
Similar to wired Ethernet network, a wireless LAN to send data in packets. Each adapter has a number of permanent and unique ID that serves as an address, and each packet contains data in addition to also include the address of the recipient and sender of the packet. Same with an Ethernet adapter, a wireless LAN card will check the condition of the network before sending the packet to it. When the network empty, then the packet is sent immediately. When the card detects the presence of other data that are using radio frequency, it waits for a moment and then check it again.
Wireless LAN typically uses one of two topology - how to set up a network. In ad-hoc topology - commonly known as peer-to-peer - every PC is equipped with a wireless LAN adapter that sends and receives data to and from other PCs equipped with the same adapter, within a radius of 300 feet (± 100 meters). For infrastructure topology, each PC to send and receive data from an access point, which is mounted on a wall or ceiling of a small box antenna. When the access point receives data, it sends back radio signals (with a range of more distant) to the PC that are in the area of coverage, or can transfer data via an Ethernet network cable. Access point on a network infrastructure has a larger coverage area, but need a tool with a more expensive price.
Although using the same working principle, the speed of sending data and the frequencies used by different wireless LANs based on the types or products manufactured, depending on the standards they use. Wireless LAN vendors typically use several standards, including IEEE 802.11, IEEE 802.11b, OpenAir and HomeRF. Unfortunately, these standards are not mutually incompatible with each other, and you must use the type / same product in order to build a network.
All these standards use an adapter to use small segments at 2.4-GHz radio frequency, so that the radio bandwidth to transmit the data to be small. But the adapter uses two protocols to improve the efficiency and security in sending the signal:
· Frequency hopping spread spectrum, where packet data is broken down and delivered using different frequencies, one alongside other denominations, so that all data sent and received by the PC in question. The speed is very high frequency signals, and by solving the data packet, the system provides the required security within a network, as most ordinary radio transceiver can not be followed.
Direct sequence spread spectrum, a method in which a radio frequency divided into three equal parts, and deploy the entire package through one of these frequencies. Adapter direct sequence will encrypt and decrypt data in and out, so people who do not have the authority only hear a hiss sound only if they capture the radio signals.
Wireless LAN vendors are usually mention the maximum transfer rate on their homemade adapters. Models that use the 802.11 standard to transfer data up to 2 megabits per second, both with the method of frequency hopping or direct sequence. Adapter that uses OpenAir standard to transfer data up to 1.6-Mbps using frequency hopping. And the latest standard, HomeRF can send and receive data with speed 1.6-Mbps (using the method of frequency hopping). High-speed wireless LAN using 802.11b--the standard known as WiFi - unable to send data up to 11-mbps with direct sequence protocol. (Infokomputer.com)
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