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This blog will explore WiFi connectivity within different contexts based on real-life scenarios. In this entry we’ll focus on the general Wi-Fi connectivity, in particular, mid-sized homes and offices.

Wi-Fi is a wireless networking technology that allows devices such as nodes - (laptops and desktops), mobile devices (smart phones and wearables), and other equipment (printers and playstations, Door phones, Access Control System) to connect with the Internet. It allows these devices to exchange information with one another to create a network.

 

What does Wi-Fi mean?

A facility allowing computers, smartphones, or other devices to connect to the Internet or communicate with one another wirelessly within a particular area.

 

How does Wi-Fi work?

WiFi works off of the same principal as other wireless devices - it uses radio frequencies to send signals between devices. And to receive and send the information in these waves lengths, your radio receiver needs to be set to receive and send waves of a certain frequency. WiFi frequency bands are frequency ranges within the wireless spectrum that are designated to carry WiFi: 2.4 GHz and 5 GHz.

 

On the technical side, the IEEE 802.11 standard defines the protocols that defines  and enables communications with Wi-Fi-enabled wireless devices, including wireless switches, routers and wireless access points. Each standard is an amendment that is defined with RFC over time. The Wi-fi  standards operate on varying frequencies, deliver different bandwidth, and support different numbers of channels.

 

How are 2.4 GHz WiFi and 5 GHz WiFi different?

There are four main differences between the 2.4 GHz WiFi band and the 5 GHz WiFi band:

 

i)                    WiFi network coverage

ii)                  WiFi network speed

iii)                Co-channel interference

iv)                Device compatibility

 

What is a wireless access point?

A wireless access point (AP) allows wireless (nodes) devices to connect to the wireless network. An access point takes the bandwidth coming from a router and stretches it so that many devices which are distances away. But a wireless access point does more than simply extend Wi-Fi.

 

What is a wireless router?

Wireless routers are commonly found in homes and offices. They're the hardware devicesthat Internet service providers use to connect you to their cable or xDSL Internet network.A wireless router is sometimes referred to as a wireless local area network (WLAN) device. A wireless router combines the networking functions of a wireless access point and a router.