The answer to this would be B
Answer:
OC
Explanation:
They were adapted from the Coleco company.
-- A galaxy is a collection of a huge number of stars ... possibly hundreds
of billions of stars in a galaxy.
-- If a star has planets in orbit around it, then the star and its planets make up
one solar system.
-- There could be hundreds of billions of solar systems in one galaxy.
Advntage:
provides CPU scheduling, memory management, file management, and other operating system functions through system calls. The other one is that it is a single large process running entirely in a single address space.
Disadvantage: if anyone service fails it leads to an entire system failure
