GATE 2004
October 16, 2023UGC NET CS 2015 June Paper-3
October 16, 2023NTA-UGC-NET 2021 Dec & 2022 June Paper-2
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Question 7
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Consider the following statements:
Statement I: Conservative 2 PL is a deadlock-free protocol.
Statement II: Thomas’s write rule enforces conflict serializability.
Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
Which of the following is correct?
Statement I: Conservative 2 PL is a deadlock-free protocol.
Statement II: Thomas’s write rule enforces conflict serializability.
Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
Which of the following is correct?
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Statement I, Statement II true and Statement III false
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Statement I, Statement III true and Statement II false
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Statement I, Statement II false and Statement III true
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Statement I, Statement II and Statement III true
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Question 7 Explanation:
TRUE: Statement I: Conservative 2 PL is a deadlock-free protocol.
TRUE: Statement II: Thomas’s write rule enforces conflict serializability.
TRUE: Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
TRUE: Statement II: Thomas’s write rule enforces conflict serializability.
TRUE: Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
Correct Answer: D
Question 7 Explanation:
TRUE: Statement I: Conservative 2 PL is a deadlock-free protocol.
TRUE: Statement II: Thomas’s write rule enforces conflict serializability.
TRUE: Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
TRUE: Statement II: Thomas’s write rule enforces conflict serializability.
TRUE: Statement III: Timestamp ordering protocol ensures serializability based on the order of transaction timestamps.
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