In a multiprogramming and time-sharing environment, several users share the system simultaneously. This situation can result in various security problems. a. What are two such

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

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