COMPUTER SOFTWARE
OPERATING SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ensures that different processes can utilise the CPU and do not interfere with each other or crash
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Allows creation and deletion of user accounts
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Communicates with and receives data input to a keyboard/mouse/other valid input device
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Ensures that programs/data do not corrupt each other
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Detailed explanation-1: -The security management function of an operating system helps in implementing mechanisms that secure and protect the computer system internally as well as externally. Therefore an operating system is responsible for securing the system at two different levels which are internal security and external security.
Detailed explanation-2: -Operating System-The OS must protect itself from security breaches, such as runaway processes ( denial of service ), memory-access violations, stack overflow violations, the launching of programs with excessive privileges, and many others.
Detailed explanation-3: -The operating system (OS) manages all of the software and hardware on the computer. It performs basic tasks such as file, memory and process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
Detailed explanation-4: -It is of three types. B1 − Maintains the security label of each object in the system. Label is used for making decisions to access control. B2 − Extends the sensitivity labels to each system resource, such as storage objects, supports covert channels and auditing of events.