1.A process runs completely in a single address space in the monolithic kernel.

2.Cost of module interaction is low- function call.

3.The monolithic kernel is a static single binary file.

4. Simple and easy to implement structure

5.The execution of the monolithic kernel is quite fast as the services such as memory management, file management, process scheduling etc.are implemented under the same address space.

 Disadvantages. 

 Perform each task through kernel.

 If task crash, damage the OS. 

Hard to modify. Unreliable. 

 Maintenance is not easy