Which of the Following Will Cause a Deadlock

question 8

Multiple Choice

Which of the following will cause a deadlock?

• A) Transaction T1 requests an exclusive lock on data A at the same time as transaction T2
• B) Simultaneously, transaction T2 places an exclusive lock on data B, then requests one on data A
• C) Transaction T1 places an exclusive lock on data A, then transaction T2 requests a shared lock on data A
• D) Transaction T1 places an exclusive lock on data A, then requests one on data
• E) Transaction T1 and T2 modify data A without any lock

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The practice of some individuals, particularly men, sitting with their legs wide apart in public transportation, taking up more than one seat.

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