Question

How many MPMs can be loaded at a time?

(a) 3

(b) 1

(c) 4

(d) 0

The question was posed to me during an interview.

My question is taken from Web Performance Optimization in portion HTML Images & Web Page Files of HTML

Answer 1

The correct choice is (b) 1

Best explanation: Multi-Process Modules i.e. MPMs is introduced by Apache 2, it controls how Apache handles the requests. We can load only one MPM at a time. But in the case of Linux, we can use two MPMs. There are two kind of MPM, worker and prefork.