It is possible for the router to know whether it is supposed to send a cat photo to your laptop because It uses the private IP address.
Router is a device that help to transfer data and across the internet or across the user device and the internet.
Private IP addresses are internet protocol addresses that is often assign to user device by router in order to a successful communicate to take place between the internet and user device.
Private IP addresses are mostly at:
•Home
•Office
•Business environments
Inconclusion It is possible for the router to know whether it is supposed to send a cat photo to your laptop because It uses the private IP address.
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