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Concurrency Control MCQ – Practice Test 6 PDF Download

MCQ 26: Deadlock prevention approaches are of:

  1. 2 types
  2. 3 types
  3. 4 types
  4. 5 types

MCQ 27: A deadlock can be broken down by:

  1. Committing one or more transactions
  2. Aborting one or more transactions
  3. Rolling back one or more transactions
  4. Terminating one or more transactions

MCQ 28: Exclusive locks are released at the end of the transaction to ensure:

  1. Recoverability
  2. Cascadelessness
  3. Key-value locking
  4. Both A and B

MCQ 29: Various concurrency-control schemes are used to ensure:

  1. Serializability
  2. Deadlock prevention
  3. Timeouts
  4. Locking states

MCQ 30: For dealing with the not-prevented deadlocks, the system constructs:

  1. Wait-wound graph
  2. Wait-for graph
  3. Wound-for graph
  4. Wound-wait graph

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