RRB Junior Engineer / DMS / CMA 2019 · Question 3611 of 3719
Concept An Operating System supplies different kinds of services to both the users and to the programs as well. It also provides application programs (that run within an Operating system) an environment to execute it freely. It provides users the services to run various programs in a convenient manner. Here is a list of common services offered by almost all operating systems: User Interface Program Execution File system manipulation Input / Output Operations Communication Resource Allocation Error Detection Accounting Security and protection Hence Option 4 is correct
Source: RRB JE 2019 (CBT 2) (IT) Previous Year Paper (30 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary
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