technical: a group of people used in a study who have something (such as age or social class) in common. Depression was a common problem for people in that age cohort.echnical: a group of people used in a study who have something (such as age or social class) in common. Depression was a common problem for people in that age cohort.
Wi-Fi is the name of a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. A common misconception is that the term Wi-Fi is short for  wireless fidelity , however this is not the case. Wi-Fi is simply a trademarked phrase that means IEEE 802.11x.
Definition: Wireless (or wi-fi) hotspots are essentially wireless access points providing network and/or Internet access to mobile devices like your laptop or smartphone, typically in public locations. Wi-Fi Hotspot Security-Before You Connect to a Wi-Fi Hotspot. 2  International Wireless Internet Service: Wi-Fi Internet Access On the Go. 3  Mobile Internet Access Comparison: 3G, Wi-Fi, & Other Internet on the Go Options.