Ms. Lawson, a primary school teacher, told her students that a photograph of the president is in the public domain. What does she mean by this?

The ieee 802.11: defines standards for wireless local area network (wlan) communication protocols. identifies various computers or devices connected to a network. verifies any resource attached to another computer on a network that is different from the computer to which the user is logged on. connects multiple local area networks (lans) and wide area networks (wans).