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.
This is a list of United States wireless communications service providers. The Cellular Telecommunications & Internet Association (CTIA), lists approximately 30 facilities-based wireless service providers in the United States as members.Competitive Carriers Association (CCA) has over 100 members.he Cellular Telecommunications & Internet Association (CTIA), lists approximately 30 facilities-based wireless service providers in the United States as members. Competitive Carriers Association (CCA) has over 100 members.