Are loosely coupled multiprocessor?

A loosely coupled multiprocessor system is a type of multiprocessing where the individual processors are configured with their own memory and are capable of executing user and operating system instructions independent of each other. This type of architecture paves the way for parallel processing.

What are tightly coupled multiprocessor?

Tightly-coupled (shared memory) multiprocessor system. Multiprocessor system with a shared memory closely connected to the processors. A symmetric multiprocessing system is a system with centralized shared memory called main memory (MM) operating under a single operating system with two or more homogeneous processors.