IIS Interview Question:

What is the role of http.sys in IIS?

Submitted by: Administrator

It is the point of contact for all incoming HTTP requests. It listens for requests and queues them until they are all processed, no more queues are available, or the Web server is shut down.
Submitted by: Administrator

It is Kernel-mode driver and it listens for requests and queue them appropriately. Each request queue corresponds to one application pool.
Submitted by: Anil