Virtual Labs

What is the primary purpose of statistical databases?

a: To allow direct access to individual records Explanation

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b: To provide summarized information using aggregate queries Explanation

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c: To encrypt all stored data Explanation

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d: To prevent all types of database queries Explanation

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What type of attack exploits aggregate query results to infer private information?

a: Brute-force attack Explanation

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b: SQL injection attack Explanation

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c: Inference attack Explanation

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d: Denial of service attack Explanation

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What is a differencing attack in statistical databases?

a: Running the same query multiple times to overload the system Explanation

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b: Comparing results of slightly different aggregate queries to infer individual data Explanation

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c: Modifying database records directly Explanation

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d: Encrypting query results before returning them Explanation

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How does noise addition help prevent inference attacks?

a: By blocking all aggregate queries Explanation

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b: By encrypting query results Explanation

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c: By adding controlled random values to query outputs Explanation

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d: By increasing database size Explanation

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What is the main role of k-anonymity (query-set-size control)?

a: To ensure each query returns exactly k results Explanation

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b: To allow queries only when the result set size is at least k Explanation

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c: To encrypt k records in the database Explanation

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d: To limit the number of users accessing the database Explanation

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Why is rate limiting effective against inference attacks?

a: It increases query execution speed Explanation

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b: It encrypts all query results Explanation

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c: It restricts repeated or rapid execution of queries Explanation

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d: It allows unlimited access to aggregate queries Explanation

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Statistical Inference Control