Which of the following networks is LEAST likely to be a WAN ?

1. The Internet
2. A school network
3. A network of ATMs
4. A network of lab computers of a testing lab

Pick from the situations below where you would pick WLAN over a LAN

1. Devices to be linked are mobile devices like laptops and smartphones spread over a large geographical area
2. Connecting devices keep moving from cities to countries
3. Devices to be linked are stationed within a small secluded place inside a city
4. Expenses to setup a network are limited

Pick from the situations below where you would pick PAN over a WLAN

1. Devices to be linked are mobile devices like laptops and smartphones spread over a large geographical area
2. Connecting devices are confined within a room
3. Connecting devices are within the range of same Wifi
4. Expenses to setup a network are limited

Which switching method offers a dedicated transmission channel ?

1. Packet switching
2. Circuit switching
3. Message switching
4. None of these