Concept:The physical facility where different internet service providers connect to exchange traffic is called an Internet Exchange Point (IXP).
Explanation:In the given scenario, the school’s ISP and the hostel are located within the same premises.
When the student uploads details through the school WiFi, the traffic goes from the ISP to other ISPs.
The physical infrastructure that allows ISPs to interconnect and exchange this traffic directly is known as an Internet Exchange Point (IXP).
An IXP helps networks exchange data without routing through a third-party network, which improves speed and reduces costs.
Switch racks are simply cabinets that hold switches inside a network facility.
Subscriber end points are user devices such as smartphones, tablets, or computers.
Server farms are data centres that house many servers to host websites and services.
Thus, only the Internet Exchange Point is the physical infrastructure used for exchanging traffic between ISPs.
Answer:C. Internet Exchange Point