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Microsoft AZ-305 Practice Test 55

Question 540

Acceptance testing must establish the following operational result: Measured evidence supports continuous readiness. Which verification action most directly establishes that outcome?

  1. Test private endpoint, DNS and routing from recovery workloads.
  2. List points from the requested years in the vault.
  3. Compare each exercise result with its contractual objectives and closure record.
  4. Execute the full business transaction after an isolated failover.

Explanation

Correct Answer

C:

Measured evidence supports continuous readiness.

Incorrect Answers

A:

That verification addresses the different requirement: A DR exercise fails because the replacement region lacks required IP ranges and connectivity. It does not directly establish measured evidence supports continuous readiness.

B:

This is a test for An audit demands monthly recovery points retained for several years. The requirement here is instead demonstrated by compare each exercise result with its contractual objectives and closure record.

D:

That verification addresses the different requirement: A business has replication but no documented process for DNS, secrets and database failover. It does not directly establish measured evidence supports continuous readiness.

Question 541

A customer-facing VM application must remain available after one zone outage while a dependent database also stays operational. Which THREE design measures support the objective? (Select THREE.)

  1. Rely on daily backups as an uninterrupted live database replica.
  2. Place redundant stateless VM instances in separate availability zones.
  3. Ignore load-balancer health because VMs are spread across zones.
  4. Route client requests using health-based load balancing across healthy instances.
  5. Use a suitably zone-redundant database tier for the critical data dependency.
  6. Run all serving VMs in a single zone with no standby.

Explanation

Correct Answers

B:

Distributed compute avoids one zonal failure domain.

D:

Probes direct traffic away from failed backends.

E:

A zonal database failure would otherwise stop all transactions.

Incorrect Answers

A:

Backups are recovery points rather than an active HA data service.

C:

Failed endpoints still require traffic removal.

F:

This does not withstand a zone failure.

Question 542

An architecture proposal for zonal vm high availability relies on the following approach: Run one VM in one zone and rely solely on an SLA label. Which specific failure or mismatch should the design reviewer identify?

  1. Shared placement can expose both instances to the same host event.
  2. Client retries do not introduce database zone redundancy.
  3. A single VM cannot continue service when its zone fails.
  4. The single database failure still stops all user transactions.

Explanation

Correct Answer

C:

Run one VM in one zone and rely solely on an SLA label. A single VM cannot continue service when its zone fails.

Incorrect Answers

A:

That assessment refers to the separate proposal 'Put both VMs in one unprotected host placement with no separation.' not to the recommendation under review. Here, A single VM cannot continue service when its zone fails.

B:

This concern applies to Deploy a non-zonal database and assume application retries create zone replicas. in another design for high availability design. The current proposal specifically fails because a single VM cannot continue service when its zone fails.

D:

That assessment refers to the separate proposal 'Declare service zonally redundant based only on web-tier VM placement.' not to the recommendation under review. Here, A single VM cannot continue service when its zone fails.

Question 543

Acceptance testing must establish the following operational result: Continued traffic confirms the zonal design. Which verification action most directly establishes that outcome?

  1. Inspect zone-redundant setting and measure planned failover behavior.
  2. Inspect fault and update domain distribution for the protected VMs.
  3. Inject a database instance failover and check the complete request path.
  4. Test taking one zone's instances out of service while probing the app.

Explanation

Correct Answer

D:

Continued traffic confirms the zonal design.

Incorrect Answers

A:

This is a test for A mission-critical SQL Database needs protection from a primary zone failure in a supported region. The requirement here is instead demonstrated by test taking one zone's instances out of service while probing the app.

B:

That verification addresses the different requirement: A legacy app cannot run active-active but needs resilience to host hardware maintenance. It does not directly establish continued traffic confirms the zonal design.

C:

That verification addresses the different requirement: A zonal web service has redundant VMs but both rely on one unmanaged database VM. It does not directly establish continued traffic confirms the zonal design.

Question 544

A legacy app cannot run active-active but needs resilience to host hardware maintenance. Which Azure architecture choice best meets this requirement?

  1. Put both VMs in one unprotected host placement with no separation.
  2. Use an appropriate availability set or supported VM maintenance design.
  3. Declare service zonally redundant based only on web-tier VM placement.
  4. Run one VM in one zone and rely solely on an SLA label.

Explanation

Correct Answer

B:

Availability sets distribute eligible VMs across fault and update domains.

Incorrect Answers

A:

Shared placement can expose both instances to the same host event. This proposal contradicts the stated architecture constraint.

C:

The single database failure still stops all user transactions. In the present requirement, a legacy app cannot run active-active but needs resilience to host hardware maintenance. The needed design instead works because availability sets distribute eligible VMs across fault and update domains.

D:

A single VM cannot continue service when its zone fails. In the present requirement, a legacy app cannot run active-active but needs resilience to host hardware maintenance. The needed design instead works because availability sets distribute eligible VMs across fault and update domains.

Question 545

An architecture proposal for zonal vm high availability relies on the following approach: Put both VMs in one unprotected host placement with no separation. Which specific failure or mismatch should the design reviewer identify?

  1. Shared placement can expose both instances to the same host event.
  2. A single VM cannot continue service when its zone fails.
  3. The single database failure still stops all user transactions.
  4. Transport sessions may break while a new replica becomes primary.

Explanation

Correct Answer

A:

Put both VMs in one unprotected host placement with no separation. Shared placement can expose both instances to the same host event.

Incorrect Answers

B:

That assessment refers to the separate proposal 'Run one VM in one zone and rely solely on an SLA label.' not to the recommendation under review. Here, Shared placement can expose both instances to the same host event.

C:

That assessment refers to the separate proposal 'Declare service zonally redundant based only on web-tier VM placement.' not to the recommendation under review. Here, Shared placement can expose both instances to the same host event.

D:

This concern applies to Assume active SQL connections never need retry logic after a failover. in another design for high availability design. The current proposal specifically fails because shared placement can expose both instances to the same host event.

Question 546

Acceptance testing must establish the following operational result: Placement evidence verifies host-level failure separation. Which verification action most directly establishes that outcome?

  1. Test taking one zone's instances out of service while probing the app.
  2. Inject a database instance failover and check the complete request path.
  3. Induce an approved failover and inspect client transient-fault retries.
  4. Inspect fault and update domain distribution for the protected VMs.

Explanation

Correct Answer

D:

Placement evidence verifies host-level failure separation.

Incorrect Answers

A:

That verification addresses the different requirement: A production VM workload must survive loss of one availability zone with no regional relocation. It does not directly establish placement evidence verifies host-level failure separation.

B:

That verification addresses the different requirement: A zonal web service has redundant VMs but both rely on one unmanaged database VM. It does not directly establish placement evidence verifies host-level failure separation.

C:

This is a test for A SQL service requires automatic local failover with predictable client reconnects. The requirement here is instead demonstrated by inspect fault and update domain distribution for the protected VMs.

Question 547

A zonal web service has redundant VMs but both rely on one unmanaged database VM. Which Azure architecture choice best meets this requirement?

  1. Remove the database single point of failure through a compatible HA or managed database design.
  2. Put both VMs in one unprotected host placement with no separation.
  3. Run one VM in one zone and rely solely on an SLA label.
  4. Declare service zonally redundant based only on web-tier VM placement.

Explanation

Correct Answer

A:

Application availability is bounded by critical dependent data services.

Incorrect Answers

B:

Shared placement can expose both instances to the same host event. In the present requirement, a zonal web service has redundant VMs but both rely on one unmanaged database VM. The needed design instead works because application availability is bounded by critical dependent data services.

C:

A single VM cannot continue service when its zone fails. In the present requirement, a zonal web service has redundant VMs but both rely on one unmanaged database VM. The needed design instead works because application availability is bounded by critical dependent data services.

D:

The single database failure still stops all user transactions. This proposal contradicts the stated architecture constraint.

Question 548

An architecture proposal for zonal vm high availability relies on the following approach: Declare service zonally redundant based only on web-tier VM placement. Which specific failure or mismatch should the design reviewer identify?

  1. Shared placement can expose both instances to the same host event.
  2. The single database failure still stops all user transactions.
  3. A single VM cannot continue service when its zone fails.
  4. Read replicas cannot automatically meet synchronous failover requirements.

Explanation

Correct Answer

B:

Declare service zonally redundant based only on web-tier VM placement. The single database failure still stops all user transactions.

Incorrect Answers

A:

That assessment refers to the separate proposal 'Put both VMs in one unprotected host placement with no separation.' not to the recommendation under review. Here, The single database failure still stops all user transactions.

C:

That assessment refers to the separate proposal 'Run one VM in one zone and rely solely on an SLA label.' not to the recommendation under review. Here, The single database failure still stops all user transactions.

D:

This concern applies to Treat asynchronous reporting replicas as a zero-loss synchronous write quorum. in another design for high availability design. The current proposal specifically fails because the single database failure still stops all user transactions.

Question 549

Acceptance testing must establish the following operational result: End-to-end testing validates the full dependency chain. Which verification action most directly establishes that outcome?

  1. Inject a database instance failover and check the complete request path.
  2. Inspect fault and update domain distribution for the protected VMs.
  3. Compare architecture diagrams and run read/write/failover tests.
  4. Test taking one zone's instances out of service while probing the app.

Explanation

Correct Answer

A:

End-to-end testing validates the full dependency chain.

Incorrect Answers

B:

That verification addresses the different requirement: A legacy app cannot run active-active but needs resilience to host hardware maintenance. It does not directly establish end-to-end testing validates the full dependency chain.

C:

This is a test for An application owner confuses SQL read replicas with synchronous transactional HA replicas. The requirement here is instead demonstrated by inject a database instance failover and check the complete request path.

D:

That verification addresses the different requirement: A production VM workload must survive loss of one availability zone with no regional relocation. It does not directly establish end-to-end testing validates the full dependency chain.

Question 550

A regional stateless web fleet must replace failed instances and scale on aggregate CPU. Which Azure architecture choice best meets this requirement?

  1. Reboot all production instances at exactly the same instant.
  2. Manually provision each VM and detect failure only through user complaints.
  3. Store the only copy of user sessions on each scale-in eligible VM.
  4. Use Virtual Machine Scale Sets with suitable health and autoscale policies.

Explanation

Correct Answer

D:

VMSS coordinates homogeneous instances and automated scale actions.

Incorrect Answers

A:

Simultaneous restarts cause avoidable full-service downtime. In the present requirement, a regional stateless web fleet must replace failed instances and scale on aggregate CPU. The needed design instead works because vMSS coordinates homogeneous instances and automated scale actions.

B:

Manual remediation delays recovery under load. This proposal contradicts the stated architecture constraint.

C:

Autoscale can delete the only record of the session. In the present requirement, a regional stateless web fleet must replace failed instances and scale on aggregate CPU. The needed design instead works because vMSS coordinates homogeneous instances and automated scale actions.

Designing Microsoft Azure Infrastructure Solutions (AZ-305) Practice Tests