What should be done on a tablet in order for that tablet to cease all network connections?

Turn on Airplane Mode

Turn off Cellular

Turn off Location services

Turn off Wi-Fi

To cease all network connections on a tablet, we could do: Turn on Airplane Mode.

Airplane Mode (sometimes referred to as Flight mode) is a feature of tablets, laptops and cellphones that terminates radio-frequency signals which could be transmitting from devices to the internet and communication signal source. This includes, bluetooth, wireless internet and data connection.