Question

Placed were wireless and wired network are used

Answer 1

they can use a completely wired network, which uses networking cable to connect computers, or they can use a wireless network which uses radio frequencies to connect computer. hub is a device that connects the cables from computers and others devicies such as printers in a network

Answer 2

wireless network are used by the army officer where there is no connection of wire
where is wired network is used at such places where there is the facility of wire such as wired connection telephone in city