What is one difference between service level software and application level software?

Service level software always provides real-time guarantees on execution time, while application level software does not.
Application level software always forms the core "building bricks" of software systems while service level software is always portable across different hardware.
Application level software provides the functionality and behavior required of the system while service level software provides application-independent functionality.
Service level software always provides the same set of operations regardless of environment, while application level software provide a consistent programming interface.

Answer(s): C

What is the difference between static and dynamic variables?

Static variables are used to save memory space in lieu of dynamic variables.
Static variables have global visibility while dynamic variables are restricted to individual components.
Static variables have a set value for the lifetime of the program, while dynamic variables can change value as determined by the program.
Static variables exist for as long as the program runs, while dynamic variables are created and destroyed by the program and scoping rules.

Answer(s): D