Disk Operating System (DOS) Question: Download DOS (Disk Operating System) PDF

..... runs on computer hardware and serve as platform for other software to run on:

a. Operating system
b. Application software
c. System software
d. All

a. Operating system

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Which type of command in DOS needs additional files for their execution? a. Internal commands b. External commands c. Batch commands d. Redirectors	..... is the layer of a computer system between the hardware and the user program. a. Operating environment b. Operating system c. System environment d. None