CDPSE Enhancing Technologies 2

Question 1

Which privacy-enhancing technology allows multiple parties to jointly compute a function over their inputs without revealing those inputs to each other?

Accepted Answer

Secure multi-party computation (SMPC)

Answer

Secure multi-party computation (SMPC) enables multiple parties to collaboratively compute results while keeping each party's input private from the others.

Question 2

A company wants to allow data analysts to query a database without ever seeing raw personal data. Which PET best fits this requirement?

Accepted Answer

Homomorphic encryption

Answer

Homomorphic encryption allows computations to be performed on encrypted data, so analysts can derive results without ever decrypting or viewing the raw personal data.

Question 3

In the context of federated learning, what is the primary privacy benefit compared to centralized machine learning?

Accepted Answer

Raw training data stays on local devices rather than being sent to a central server

Answer

Federated learning trains models locally on devices and shares only model updates (not raw data) with a central coordinator, keeping personal data on the originating device.

Question 4

A zero-knowledge proof (ZKP) is best described as a cryptographic method that allows a prover to:

Accepted Answer

Demonstrate knowledge of a secret without revealing the secret itself

Answer

A zero-knowledge proof lets one party (the prover) convince another (the verifier) that a statement is true without disclosing any information beyond the truth of that statement.

Question 5

Which technique adds controlled statistical noise to query results so that individual records cannot be singled out, while still allowing useful aggregate analysis?

Accepted Answer

Differential privacy

Answer

Differential privacy adds carefully calibrated noise to outputs so that the presence or absence of any single individual's data cannot be detected from query results.

CDPSE - Certified Data Privacy Solutions Engineer Practice Test

CDPSE - Certified Data Privacy Solutions Engineer Practice Test

CDPSE Enhancing Technologies 2