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A system shares 9 tape drives. The current allocation and maximum requirement of tape drives for 4 processes are shown below:
Which of the following best describes the current state of the system?
  • a)
    Safe, Deadlocked
  • b)
    Safe, Not Deadlocked
  • c)
    Not Safe, Deadlocked
  • d)
    Not Safe, Not Deadlocked
Correct answer is option 'C'. Can you explain this answer?
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A system shares 9 tape drives. The current allocation and maximum requ...
There are 9 tapes and allocated (3+1+3+0 =) 7, so remaining available tapes are 9 - 7 = 2.
Now we can satisfies only process P3 first which require only 2 tapes, then current available will be total 5. Similarly, we can satisfies only process P2 which require only 5 tapes, then current available will be total 6. Then, we can satisfies only process P1 which require only 6 tapes, then current available will be total 9. But we can not satisfied remaining need of process P4, because it requires 10 tapes and remaining need 9.
Option (C) is correct.
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A system shares 9 tape drives. The current allocation and maximum requ...
There are 9 tapes and allocated (3+1+3+0 =) 7, so remaining available tapes are 9 - 7 = 2.
Now we can satisfies only process P3 first which require only 2 tapes, then current available will be total 5. Similarly, we can satisfies only process P2 which require only 5 tapes, then current available will be total 6. Then, we can satisfies only process P1 which require only 6 tapes, then current available will be total 9. But we can not satisfied remaining need of process P4, because it requires 10 tapes and remaining need 9.
Option (C) is correct.
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Consider a system with 4 types of resources R1 (3 units), R2 (2 units), R3 (3 units), R4 (2 units). A non-preemptive resource allocation policy is used. At any given instance, a request is not entertained if it cannot be completely satisfied. Three processes P1, P2, P3 request the sources as follows if executed independently.Process P1:t=0: requests 2 units of R2t=1: requests 1 unit of R3t=3: requests 2 units of R1t=5: releases 1 unit of R2 and 1 unit of R1.t=7: releases 1 unit of R3t=8: requests 2 units of R4t=10: FinishesProcess P2:t=0: requests 2 units of R3t=2: requests 1 unit of R4t=4: requests 1 unit of R1t=6: releases 1 unit of R3t=8: FinishesProcess P3:t=0: requests 1 unit of R4t=2: requests 2 units of R1t=5: releases 2 units of R1t=7: requests 1 unit of R2t=8: requests 1 unit of R3t=9: FinishesWhich one of the following statements is TRUE if all three processes run concurrently starting at time t=0?

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A system shares 9 tape drives. The current allocation and maximum requirement of tape drives for 4 processes are shown below:Which of the following best describes the current state of the system?a)Safe, Deadlockedb)Safe, Not Deadlockedc)Not Safe, Deadlockedd)Not Safe, Not DeadlockedCorrect answer is option 'C'. Can you explain this answer?
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A system shares 9 tape drives. The current allocation and maximum requirement of tape drives for 4 processes are shown below:Which of the following best describes the current state of the system?a)Safe, Deadlockedb)Safe, Not Deadlockedc)Not Safe, Deadlockedd)Not Safe, Not DeadlockedCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A system shares 9 tape drives. The current allocation and maximum requirement of tape drives for 4 processes are shown below:Which of the following best describes the current state of the system?a)Safe, Deadlockedb)Safe, Not Deadlockedc)Not Safe, Deadlockedd)Not Safe, Not DeadlockedCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A system shares 9 tape drives. The current allocation and maximum requirement of tape drives for 4 processes are shown below:Which of the following best describes the current state of the system?a)Safe, Deadlockedb)Safe, Not Deadlockedc)Not Safe, Deadlockedd)Not Safe, Not DeadlockedCorrect answer is option 'C'. Can you explain this answer?.
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