A. Explain the core components of UNIX operating system. B. Briefly explain why Windows operating system is one of the most popular operating systems. C. Explain the features of MS-DOS operating...

A. Explain the core components of UNIX operating system. B. Briefly explain why Windows operating system is one of the most popular operating systems. C. Explain the features of MS-DOS operating system. D. Differentiate between internal and external commands of MS-DOS. E. What do you mean by command interpreter? F. Write a short note on the following commands:

A. DIR                      B. COPY

C. MD                       D. TREE

E. COMP.