Question: 15. In a multiprogramming and time-sharing environment, several users share a single system at the same time. This situation can result in various security problems.

15. In a multiprogramming and time-sharing environment, several users share a single system at the same time. This situation can result in various security problems. Name two such problems. Can we ensure the same degree of security in a time-share machine as we have in a dedicated machine? Explain your answer.

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