Microsoft AZ-400 Practice Test 35

Question 340

A payment API executes tests on shared production credentials because the team has no isolated integration resources. Choose TWO measures that implement and verify an effective Azure DevOps response to this specific situation. (Choose TWO.)

Exercise a real message exchange and inspect resulting service events, contract validation, and test environment teardown.
Declare service integration tests with ephemeral environments successful solely from a green pipeline status and skip checking its actual control outcome.
Bypass review and testing for service integration tests with ephemeral environments whenever the release deadline is urgent, applying the change to production immediately.
Run integration tests against provisioned test dependencies with controlled identities, seeded data, and predictable cleanup.
Dismiss the known risk for service integration tests with ephemeral environments and keep no evidence or accountable owner after deployment.

Explanation

Correct Answers

A:

Exercise a real message exchange and inspect resulting service events, contract validation, and test environment teardown. Unit tests cannot prove correctness at remote service and serialization boundaries.

D:

Run integration tests against provisioned test dependencies with controlled identities, seeded data, and predictable cleanup. Unit tests cannot prove correctness at remote service and serialization boundaries. A release may break at runtime even though each individual code module passed its unit tests.

Incorrect Answers

B:

Declare service integration tests with ephemeral environments successful solely from a green pipeline status and skip checking its actual control outcome. It conflicts with the stated operating condition: Unit tests cannot prove correctness at remote service and serialization boundaries.

C:

Bypass review and testing for service integration tests with ephemeral environments whenever the release deadline is urgent, applying the change to production immediately. It conflicts with the stated operating condition: Unit tests cannot prove correctness at remote service and serialization boundaries.

E:

Dismiss the known risk for service integration tests with ephemeral environments and keep no evidence or accountable owner after deployment. It conflicts with the stated operating condition: Unit tests cannot prove correctness at remote service and serialization boundaries.

Question 341

A backend removes a JSON field expected by older mobile clients, but producer integration tests still pass. Which implementation BEST addresses the operational issue?

Maintain producer-consumer contract tests that cover version compatibility for deployed clients and integrations.
Define representative postdeployment smoke tests and make their results a required environment promotion check.
Run integration tests against provisioned test dependencies with controlled identities, seeded data, and predictable cleanup.
Run representative load tests with accepted latency, error, throughput, and backlog thresholds before high-risk releases.

Explanation

Correct Answer

A:

Maintain producer-consumer contract tests that cover version compatibility for deployed clients and integrations. An API may work for its newest client yet violate accepted contracts used by deployed independent consumers. An apparently successful service rollout may interrupt customers still using supported older clients.

Incorrect Answers

B:

Define representative postdeployment smoke tests and make their results a required environment promotion check. That applies to staging smoke tests as environment approval gates, not consumer-driven api contract compatibility testing.

C:

Run integration tests against provisioned test dependencies with controlled identities, seeded data, and predictable cleanup. That applies to service integration tests with ephemeral environments, not consumer-driven api contract compatibility testing.

D:

Run representative load tests with accepted latency, error, throughput, and backlog thresholds before high-risk releases. That applies to load testing and latency thresholds before promotion, not consumer-driven api contract compatibility testing.

Question 342

A backend removes a JSON field expected by older mobile clients, but producer integration tests still pass. How should the team validate the intended result?

Exercise a real message exchange and inspect resulting service events, contract validation, and test environment teardown.
Re-run a platform-specific test and verify the expected agent image, test totals, failures, and output artifacts are recorded.
Run recorded older consumer contract cases against the candidate service before allowing production promotion.
Compare baseline and candidate performance under consistent demand with p95 latency and resource saturation evidence.

Explanation

Correct Answer

C:

Run recorded older consumer contract cases against the candidate service before allowing production promotion. An API may work for its newest client yet violate accepted contracts used by deployed independent consumers.

Incorrect Answers

A:

Exercise a real message exchange and inspect resulting service events, contract validation, and test environment teardown.

B:

Re-run a platform-specific test and verify the expected agent image, test totals, failures, and output artifacts are recorded. That applies to azure pipelines test results and agent capability validation, not consumer-driven api contract compatibility testing.

D:

Compare baseline and candidate performance under consistent demand with p95 latency and resource saturation evidence.

Question 343

A backend removes a JSON field expected by older mobile clients, but producer integration tests still pass. What is the underlying reason the existing approach fails?

An API may work for its newest client yet violate accepted contracts used by deployed independent consumers.
Blind retries can hide real defects and make the test suite an unreliable release gate.
Functional correctness under light traffic is not proof of safe behavior at production concurrency.
A successful job exit does not establish coverage when tests may have been skipped or results dropped.

Explanation

Correct Answer

A:

An API may work for its newest client yet violate accepted contracts used by deployed independent consumers. An apparently successful service rollout may interrupt customers still using supported older clients.

Incorrect Answers

B:

Blind retries can hide real defects and make the test suite an unreliable release gate.

C:

Functional correctness under light traffic is not proof of safe behavior at production concurrency. That applies to load testing and latency thresholds before promotion, not controlling principle for consumer-driven api contract compatibility testing.

D:

A successful job exit does not establish coverage when tests may have been skipped or results dropped. That applies to azure pipelines test results and agent capability validation, not controlling principle for consumer-driven api contract compatibility testing.

Question 344

A backend removes a JSON field expected by older mobile clients, but producer integration tests still pass. Which recurring control most directly sustains the required behavior?

Track flaky-test owners, limits, and resolution deadlines, with alerts for unstable checks.
Update rule thresholds and exception review when dependencies and organizational obligations change.
Enforce compatibility checks when API definitions, OpenAPI schemas, and message formats change.
Version test-environment definitions and refresh contract fixtures after upstream API changes.

Explanation

Correct Answer

C:

Enforce compatibility checks when API definitions, OpenAPI schemas, and message formats change. An apparently successful service rollout may interrupt customers still using supported older clients.

Incorrect Answers

A:

Track flaky-test owners, limits, and resolution deadlines, with alerts for unstable checks.

B:

Update rule thresholds and exception review when dependencies and organizational obligations change.

D:

Version test-environment definitions and refresh contract fixtures after upstream API changes. This helps sustain a control for service integration tests with ephemeral environments; it does not directly stop recurrence of consumer-driven api contract compatibility testing described in this case.

Question 345

A backend removes a JSON field expected by older mobile clients, but producer integration tests still pass. What is the MOST important consequence if this issue remains unresolved?

Known security or licensing problems can reach customers through an otherwise green build.
An apparently successful build can ship a defect already revealed by automated unit tests.
Important execution branches may remain untested despite an impressive organization-wide coverage score.
An apparently successful service rollout may interrupt customers still using supported older clients.

Explanation

Correct Answer

D:

An apparently successful service rollout may interrupt customers still using supported older clients. This is the directly relevant business or security consequence of consumer-driven api contract compatibility testing. Root cause: An API may work for its newest client yet violate accepted contracts used by deployed independent consumers.

Incorrect Answers

A:

Known security or licensing problems can reach customers through an otherwise green build. That risk is relevant to security and license policy checks within the build pipeline, but the specific unresolved condition here concerns consumer-driven api contract compatibility testing and has a different direct consequence.

B:

An apparently successful build can ship a defect already revealed by automated unit tests. That risk is relevant to pull-request unit tests gating azure pipelines builds, but the specific unresolved condition here concerns consumer-driven api contract compatibility testing and has a different direct consequence.

C:

Important execution branches may remain untested despite an impressive organization-wide coverage score. That risk is relevant to code coverage analysis for critical logic changes, but the specific unresolved condition here concerns consumer-driven api contract compatibility testing and has a different direct consequence.

Question 346

A shared message schema changes to a mandatory new property without testing consumers on the old version. Which solution should be prioritized to resolve the stated failure?

Define representative postdeployment smoke tests and make their results a required environment promotion check.
Run integration tests against provisioned test dependencies with controlled identities, seeded data, and predictable cleanup.
Run representative load tests with accepted latency, error, throughput, and backlog thresholds before high-risk releases.
Maintain producer-consumer contract tests that cover version compatibility for deployed clients and integrations.

Explanation

Correct Answer

D:

Maintain producer-consumer contract tests that cover version compatibility for deployed clients and integrations. An API may work for its newest client yet violate accepted contracts used by deployed independent consumers. An apparently successful service rollout may interrupt customers still using supported older clients.

Incorrect Answers

A:

Define representative postdeployment smoke tests and make their results a required environment promotion check. That applies to staging smoke tests as environment approval gates, not consumer-driven api contract compatibility testing.

B:

Run integration tests against provisioned test dependencies with controlled identities, seeded data, and predictable cleanup. That applies to service integration tests with ephemeral environments, not consumer-driven api contract compatibility testing.

C:

Run representative load tests with accepted latency, error, throughput, and backlog thresholds before high-risk releases. That applies to load testing and latency thresholds before promotion, not consumer-driven api contract compatibility testing.

Question 347

A shared message schema changes to a mandatory new property without testing consumers on the old version. Which evidence would BEST demonstrate that the fix operates as intended?

Exercise a real message exchange and inspect resulting service events, contract validation, and test environment teardown.
Re-run a platform-specific test and verify the expected agent image, test totals, failures, and output artifacts are recorded.
Compare baseline and candidate performance under consistent demand with p95 latency and resource saturation evidence.
Run recorded older consumer contract cases against the candidate service before allowing production promotion.

Explanation

Correct Answer

D:

Run recorded older consumer contract cases against the candidate service before allowing production promotion. An API may work for its newest client yet violate accepted contracts used by deployed independent consumers.

Incorrect Answers

A:

Exercise a real message exchange and inspect resulting service events, contract validation, and test environment teardown.

B:

Re-run a platform-specific test and verify the expected agent image, test totals, failures, and output artifacts are recorded. That applies to azure pipelines test results and agent capability validation, not consumer-driven api contract compatibility testing.

C:

Compare baseline and candidate performance under consistent demand with p95 latency and resource saturation evidence.

Question 348

A shared message schema changes to a mandatory new property without testing consumers on the old version. What is the underlying reason the existing approach fails?

Functional correctness under light traffic is not proof of safe behavior at production concurrency.
An API may work for its newest client yet violate accepted contracts used by deployed independent consumers.
Blind retries can hide real defects and make the test suite an unreliable release gate.
A successful job exit does not establish coverage when tests may have been skipped or results dropped.

Explanation

Correct Answer

B:

An API may work for its newest client yet violate accepted contracts used by deployed independent consumers. An apparently successful service rollout may interrupt customers still using supported older clients.

Incorrect Answers

A:

Functional correctness under light traffic is not proof of safe behavior at production concurrency. That applies to load testing and latency thresholds before promotion, not controlling principle for consumer-driven api contract compatibility testing.

C:

Blind retries can hide real defects and make the test suite an unreliable release gate.

D:

A successful job exit does not establish coverage when tests may have been skipped or results dropped. That applies to azure pipelines test results and agent capability validation, not controlling principle for consumer-driven api contract compatibility testing.

Question 349

A shared message schema changes to a mandatory new property without testing consumers on the old version. Which recurring control most directly sustains the required behavior?

Version test-environment definitions and refresh contract fixtures after upstream API changes.
Track flaky-test owners, limits, and resolution deadlines, with alerts for unstable checks.
Enforce compatibility checks when API definitions, OpenAPI schemas, and message formats change.
Update rule thresholds and exception review when dependencies and organizational obligations change.

Explanation

Correct Answer

C:

Enforce compatibility checks when API definitions, OpenAPI schemas, and message formats change. An apparently successful service rollout may interrupt customers still using supported older clients.

Incorrect Answers

A:

Version test-environment definitions and refresh contract fixtures after upstream API changes. This helps sustain a control for service integration tests with ephemeral environments; it does not directly stop recurrence of consumer-driven api contract compatibility testing described in this case.

B:

Track flaky-test owners, limits, and resolution deadlines, with alerts for unstable checks.

D:

Update rule thresholds and exception review when dependencies and organizational obligations change.

Question 350

A shared message schema changes to a mandatory new property without testing consumers on the old version. What is the MOST important consequence if this issue remains unresolved?

An apparently successful build can ship a defect already revealed by automated unit tests.
Important execution branches may remain untested despite an impressive organization-wide coverage score.
Known security or licensing problems can reach customers through an otherwise green build.
An apparently successful service rollout may interrupt customers still using supported older clients.

Explanation

Correct Answer

D:

An apparently successful service rollout may interrupt customers still using supported older clients. This is the directly relevant business or security consequence of consumer-driven api contract compatibility testing. Root cause: An API may work for its newest client yet violate accepted contracts used by deployed independent consumers.

Incorrect Answers

A:

An apparently successful build can ship a defect already revealed by automated unit tests. That risk is relevant to pull-request unit tests gating azure pipelines builds, but the specific unresolved condition here concerns consumer-driven api contract compatibility testing and has a different direct consequence.

B:

Important execution branches may remain untested despite an impressive organization-wide coverage score. That risk is relevant to code coverage analysis for critical logic changes, but the specific unresolved condition here concerns consumer-driven api contract compatibility testing and has a different direct consequence.

C:

Known security or licensing problems can reach customers through an otherwise green build. That risk is relevant to security and license policy checks within the build pipeline, but the specific unresolved condition here concerns consumer-driven api contract compatibility testing and has a different direct consequence.

Microsoft AZ-400 Exam Dumps, Practice Test Questions

Question 340

Explanation

Correct Answers

Incorrect Answers

Question 341

Explanation

Correct Answer

Incorrect Answers

Question 342

Explanation

Correct Answer

Incorrect Answers

Question 343

Explanation

Correct Answer

Incorrect Answers

Question 344

Explanation

Correct Answer

Incorrect Answers

Question 345

Explanation

Correct Answer

Incorrect Answers

Question 346

Explanation

Correct Answer

Incorrect Answers

Question 347

Explanation

Correct Answer

Incorrect Answers

Question 348

Explanation

Correct Answer

Incorrect Answers

Question 349

Explanation

Correct Answer

Incorrect Answers

Question 350

Explanation

Correct Answer

Incorrect Answers