四、物聯網(Internet of Things, IoT)是實現智慧城市的重要基礎，從牛津線上字典(Oxford Learner's Dictionary)查詢“Internet of Things”的解釋為：“the connection of devices within everyday objects via the internet, enabling them to share data”依上述解釋，試說明何謂 IoT？試舉二個例子說明 IoT 與地理資訊系統結合的應用方向及其效益。(25%)