Responsibilities of CLR

•  Garbage Collection :- 
• CLR automatically manages memory thus eliminating memory leaks. 
• When objects are not referred GC automatically releases those memories thus providing efficient memory management.
•  Code Access Security :- 
• CAS grants rights to program depending on the security configuration of the machine. 
• Example the program has rights to edit or create a new file but the security configuration of machine does not allow the program to delete a file. 
• CAS will take care that the code runs under the environment of machines security configuration.
•  Code Verification :- 
• This ensures proper code execution and type safety while the code runs. 
• It prevents the source code to perform illegal operation such as accessing invalid memory locations etc.
•  IL( Intermediate language )
• CLR uses JIT and compiles the IL code to machine code and then executes. 
• CLR also determines depending on platform what is optimized way of running the IL code.

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