FIDO Quality Control & Process Improvement 4

Question 1

A FIDO authenticator team uses A/B testing to evaluate two firmware versions for user verification accuracy. What metric should be the primary success criterion?

Accepted Answer

Equal or lower false acceptance rate (FAR) with equal or lower false rejection rate (FRR)

Answer

Higher throughput transactions per second

Answer

Smaller firmware binary size

Answer

Shorter attestation certificate chain length

Question 2

During a sprint retrospective for a FIDO server team, the team identifies that WebAuthn assertion verification bugs are concentrated in one module. According to the Pareto principle, what is the recommended action?

Accepted Answer

Focus quality improvement efforts on the defect-dense module first, as fixing it will resolve the majority of issues

Answer

Spread effort equally across all modules

Answer

Rewrite the entire server in a new language

Answer

Increase test coverage uniformly across all modules

Question 3

A FIDO hardware vendor wants to implement a zero-defect quality goal for shipped authenticators. Which manufacturing quality approach aligns most closely with this goal?

Accepted Answer

Six Sigma DMAIC methodology targeting near-zero defects per million opportunities

Answer

100% manual inspection of every unit before shipment

Answer

ISO 9001 documentation without statistical process controls

Answer

Relying solely on end-user bug reports for quality feedback

Question 4

A quality team establishes a 'Definition of Done' (DoD) for FIDO authenticator firmware features. Which item is most essential to include in the DoD?

Accepted Answer

FIDO conformance test suite passes for all affected authenticator operations

Answer

Feature is demonstrated in a sales demo

Answer

Marketing copy for the feature is written

Answer

The feature is deployed to production

Question 5

A continuous improvement team uses OKRs (Objectives and Key Results) to track FIDO implementation quality. Which is an example of a well-formed Key Result for reducing authentication failures?

Accepted Answer

Reduce WebAuthn assertion error rate from 2.1% to below 0.5% by end of Q3

Answer

Improve authentication quality

Answer

Fix all bugs in the FIDO stack

Answer

Make the authenticator more reliable than competitors

Question 6

A FIDO authenticator security team performs regression testing after patching a side-channel vulnerability. What is the primary purpose of regression testing in this context?

Accepted Answer

Verifying that the patch did not break previously passing functionality or introduce new defects

Answer

Confirming the vulnerability is fully exploited before patching

Answer

Testing the authenticator on new hardware platforms

Answer

Rewriting all conformance tests from scratch

Question 7

Which type of review is most appropriate for catching FIDO protocol integration errors before code is merged, with minimal process overhead?

Accepted Answer

Peer code review (pull request review)

Answer

Formal inspection with a moderator and designated roles

Answer

Post-release audit by a third-party security firm

Answer

Automated penetration test