basically there are many standards of wi-fi in the industry

but some popular of them are 802.11a, 802.11b and 802.11g/n

with the support of these wi-fi protocols we can

cummunicate/interact among the devices at the speed of 5Ghz

to 2.4 Ghz dual band cummunication.

if our wi-fi nic card so firstly we have to install their

drivers and after installation if we have wi-fi access

point then we can see the signal strength in the right

corner below just open that and find the access point to

connect,if A/P is configured with the security,type the key

to connect