Answer & Explanation

4 Answers
Verified Correct Answer

Option A

A connection pool reuses a controlled number of database connections, reducing connection setup overhead and preventing unbounded connection creation.
Additional Explanation
Correct implementation. Prefer parameterized queries in application code, validate affected rows for UPDATE/DELETE, and use transactions for related writes.
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Editorial Answer 1
Verified

Option B

It guarantees every query is indexed.
Additional Explanation
This option is incorrect for the stated requirement.
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Editorial Answer 2
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Option C

It stores SQL permanently in browser cache.
Additional Explanation
This option is incorrect for the stated requirement.
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Editorial Answer 3
Verified

Option D

It replaces transactions.
Additional Explanation
This option is incorrect for the stated requirement.
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Editorial Answer 4