Question 910
An architect proposes this change: Add supported transit design with explicit routing and peering gateway forwarding as required; VNet peering is not automatically transitive. The workload context is: Spoke A is peered to Hub and Hub is peered to Spoke B; engineers incorrectly assume that A and B automatically communicate. Which evidence would most directly validate the change?
- Resolve a private endpoint FQDN from a spoke and an on-prem client and verify the intended private address.
- Test effective routes and traffic between A and B through the intended hub routing device.
- Connect a test spoke and verify its approved traffic traverses shared hub security services.
- Onboard a test branch and verify it reaches permitted VNets through the intended virtual hub.
Explanation
Correct Answer
B:This observation directly verifies the intended design: Test effective routes and traffic between A and B through the intended hub routing device. The architecture being tested is: Add supported transit design with explicit routing and peering gateway forwarding as required; VNet peering is not automatically transitive. The original symptom was: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub.
Incorrect Answers
A:The alternative test targets: Use Azure Private DNS zones with proper VNet links and Azure DNS Private Resolver or supported forwarders. The scenario's actual proposed remedy is: Add supported transit design with explicit routing and peering gateway forwarding as required; VNet peering is not automatically transitive. Verify that one by: Test effective routes and traffic between A and B through the intended hub routing device.
C:That observation pertains to a separate failure: Every spoke deploys its own unmanaged internet egress and inconsistent security policies. Its cause is: No central hub networking and route control is designed. It does not confirm the result of this design. The direct proof would be: Test effective routes and traffic between A and B through the intended hub routing device.
D:The alternative test targets: Use Azure Virtual WAN hubs and supported site connectivity/policies instead of managing many separate custom transit meshes. The scenario's actual proposed remedy is: Add supported transit design with explicit routing and peering gateway forwarding as required; VNet peering is not automatically transitive. Verify that one by: Test effective routes and traffic between A and B through the intended hub routing device.
Question 911
During architecture troubleshooting, a team reports: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub. Context: Spoke A is peered to Hub and Hub is peered to Spoke B; engineers incorrectly assume that A and B automatically communicate. Which underlying design mistake explains the observed behavior most precisely?
- No central hub networking and route control is designed.
- VNet peering does not create arbitrary transitive route propagation by itself.
- Global branch transit lacks an appropriate managed hub/routing architecture.
- Private DNS zone link/forwarding architecture does not cover all consuming networks.
Explanation
Correct Answer
B:The incident is explained by: VNet peering does not create arbitrary transitive route propagation by itself. The reported symptom is: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub. The corresponding design fix is: Add supported transit design with explicit routing and peering gateway forwarding as required; VNet peering is not automatically transitive.
Incorrect Answers
A:The alternative weakness is: No central hub networking and route control is designed. Its associated failure is: Every spoke deploys its own unmanaged internet egress and inconsistent security policies. Neither explains the present observation: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub. The direct cause here is: VNet peering does not create arbitrary transitive route propagation by itself.
C:The proposed diagnosis fits another scenario: Global branch transit lacks an appropriate managed hub/routing architecture. It would typically be reflected by: Hundreds of ad hoc peering and branch tunnels are unmanageable and route propagation becomes inconsistent. The current evidence instead supports: VNet peering does not create arbitrary transitive route propagation by itself.
D:The alternative weakness is: Private DNS zone link/forwarding architecture does not cover all consuming networks. Its associated failure is: Only VMs in the hub resolve private link records while spoke applications resolve public addresses. Neither explains the present observation: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub. The direct cause here is: VNet peering does not create arbitrary transitive route propagation by itself.
Question 912
The design change is: Add supported transit design with explicit routing and peering gateway forwarding as required; VNet peering is not automatically transitive. The original failure was: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub. Which ongoing control best prevents recurrence of the same root cause?
- Audit private DNS zone links and resolver rules after new environments are added.
- Review virtual hub route tables and secured hub policies after new regions are added.
- Audit spoke route tables, peer flags and common firewall policies during onboarding.
- Validate new spoke effective routes and hub NVA forwarding after each peering update.
Explanation
Correct Answer
D:The key follow-up control is: Validate new spoke effective routes and hub NVA forwarding after each peering update. It avoids recurrence of the scenario in which: Spoke A cannot reach Spoke B despite both VNets having healthy peering to Hub. It addresses: VNet peering does not create arbitrary transitive route propagation by itself.
Incorrect Answers
A:The proposed control focuses on: Private DNS zone link/forwarding architecture does not cover all consuming networks. For the design in the question, recurrence comes from: VNet peering does not create arbitrary transitive route propagation by itself. A precise prevention step is: Validate new spoke effective routes and hub NVA forwarding after each peering update.
B:That safeguard manages another risk: Global branch transit lacks an appropriate managed hub/routing architecture. Its scenario is: Hundreds of ad hoc peering and branch tunnels are unmanageable and route propagation becomes inconsistent. The present recurring risk is: VNet peering does not create arbitrary transitive route propagation by itself. The proper ongoing control is: Validate new spoke effective routes and hub NVA forwarding after each peering update.
C:This is a reasonable safeguard for a different fault: Every spoke deploys its own unmanaged internet egress and inconsistent security policies. That different mechanism is: No central hub networking and route control is designed. The original incident here instead arises from: VNet peering does not create arbitrary transitive route propagation by itself. The directly relevant safeguard is: Validate new spoke effective routes and hub NVA forwarding after each peering update.
Question 913
A design workshop has this requirement: A small branch needs encrypted Azure connectivity quickly over the public internet with lower setup commitment than a dedicated private circuit. Operators currently observe: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. Select the ONE design remedy that best addresses the root cause.
- Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
- Use Azure Virtual WAN hubs and supported site connectivity/policies instead of managing many separate custom transit meshes.
- Select a supported Private Link/private endpoint design when the requirement is private IP connectivity and public endpoint closure.
- Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
Explanation
Correct Answer
A:This option addresses the actual design defect: No suitable site-to-site VPN connectivity has been configured. The correction is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing. Confirm the outcome with: Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
Incorrect Answers
B:This choice mitigates an alternative scenario, where: Hundreds of ad hoc peering and branch tunnels are unmanageable and route propagation becomes inconsistent. The underlying issue there is: Global branch transit lacks an appropriate managed hub/routing architecture. Here the root issue is: No suitable site-to-site VPN connectivity has been configured. Choose the corresponding action: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
C:The option belongs to a different failure mechanism: Service endpoints secure source traffic to the service's public endpoint rather than creating a private endpoint. That situation exhibits: The database still exposes a public endpoint when only a VNet service endpoint rule is applied. For the stated case, the remedy is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
D:That design instead addresses another observed condition: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. Its technical cause is: The connectivity method does not meet the private circuit and predictable path requirement. The current workload exhibits: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. Its targeted remedy is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
Question 914
The planned architecture is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing. Workload context: A small branch needs encrypted Azure connectivity quickly over the public internet with lower setup commitment than a dedicated private circuit. Which acceptance test demonstrates that the required behavior works?
- Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
- Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
- Validate SQL server private name resolution and connectivity from an approved subnet with public network access disabled.
- Onboard a test branch and verify it reaches permitted VNets through the intended virtual hub.
Explanation
Correct Answer
B:The acceptance test is specific: Establish VPN and test secured reachability from branch prefixes to approved Azure subnets. Its purpose is to establish that the proposed architecture works: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
Incorrect Answers
A:This check validates a different workload: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability. Its associated design is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy. The required acceptance test here is: Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
C:The alternative test targets: Select a supported Private Link/private endpoint design when the requirement is private IP connectivity and public endpoint closure. The scenario's actual proposed remedy is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing. Verify that one by: Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
D:This check validates a different workload: Onboard a test branch and verify it reaches permitted VNets through the intended virtual hub. Its associated design is: Use Azure Virtual WAN hubs and supported site connectivity/policies instead of managing many separate custom transit meshes. The required acceptance test here is: Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
Question 915
The customer states: A small branch needs encrypted Azure connectivity quickly over the public internet with lower setup commitment than a dedicated private circuit. An incident reveals: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. What cause best accounts for this evidence?
- Service endpoints secure source traffic to the service's public endpoint rather than creating a private endpoint.
- Global branch transit lacks an appropriate managed hub/routing architecture.
- The connectivity method does not meet the private circuit and predictable path requirement.
- No suitable site-to-site VPN connectivity has been configured.
Explanation
Correct Answer
D:The incident is explained by: No suitable site-to-site VPN connectivity has been configured. The reported symptom is: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. The corresponding design fix is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
Incorrect Answers
A:This cause would explain a different symptom: The database still exposes a public endpoint when only a VNet service endpoint rule is applied. The mechanism for that event is: Service endpoints secure source traffic to the service's public endpoint rather than creating a private endpoint. Here the stated symptom is: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. Its cause is: No suitable site-to-site VPN connectivity has been configured.
B:The proposed diagnosis fits another scenario: Global branch transit lacks an appropriate managed hub/routing architecture. It would typically be reflected by: Hundreds of ad hoc peering and branch tunnels are unmanageable and route propagation becomes inconsistent. The current evidence instead supports: No suitable site-to-site VPN connectivity has been configured.
C:The alternative weakness is: The connectivity method does not meet the private circuit and predictable path requirement. Its associated failure is: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. Neither explains the present observation: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. The direct cause here is: No suitable site-to-site VPN connectivity has been configured.
Question 916
Workload context: A small branch needs encrypted Azure connectivity quickly over the public internet with lower setup commitment than a dedicated private circuit. The implemented remedy is: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing. Which ongoing practice most specifically prevents recurrence of this failure: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established.?
- Monitor ExpressRoute BGP route counts, circuit health and provider diversity.
- Monitor tunnel state, key rollover and gateway capacity after branch growth.
- Review virtual hub route tables and secured hub policies after new regions are added.
- Document when Private Link versus service endpoint is appropriate for each PaaS resource.
Explanation
Correct Answer
B:This is an ongoing protection specific to the fault: Monitor tunnel state, key rollover and gateway capacity after branch growth. The recurrence risk is: No suitable site-to-site VPN connectivity has been configured. It should be checked using: Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
Incorrect Answers
A:That safeguard manages another risk: The connectivity method does not meet the private circuit and predictable path requirement. Its scenario is: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. The present recurring risk is: No suitable site-to-site VPN connectivity has been configured. The proper ongoing control is: Monitor tunnel state, key rollover and gateway capacity after branch growth.
C:The proposed control focuses on: Global branch transit lacks an appropriate managed hub/routing architecture. For the design in the question, recurrence comes from: No suitable site-to-site VPN connectivity has been configured. A precise prevention step is: Monitor tunnel state, key rollover and gateway capacity after branch growth.
D:That safeguard manages another risk: Service endpoints secure source traffic to the service's public endpoint rather than creating a private endpoint. Its scenario is: The database still exposes a public endpoint when only a VNet service endpoint rule is applied. The present recurring risk is: No suitable site-to-site VPN connectivity has been configured. The proper ongoing control is: Monitor tunnel state, key rollover and gateway capacity after branch growth.
Question 917
A solution architect is reviewing a workload: A bank requires private predictable connectivity from a datacenter to Azure without depending on ordinary public-internet VPN paths. The observed incident is: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. Which architecture choice most directly removes the identified weakness?
- Evaluate ExpressRoute Global Reach eligibility and configure it across supported circuits.
- Configure Azure Private Endpoint for the storage subresource and integrate matching private DNS resolution.
- Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
- Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
Explanation
Correct Answer
D:The evidence (Cloud connectivity quality degrades with commodity internet congestion and VPN overhead.) identifies the following cause: The connectivity method does not meet the private circuit and predictable path requirement. The design that removes it is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy. The acceptance check is: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
Incorrect Answers
A:This choice mitigates an alternative scenario, where: The two sites remain isolated because their separate circuits only reach Azure private peers. The underlying issue there is: Global Reach or an alternative private on-prem interconnect was not designed. Here the root issue is: The connectivity method does not meet the private circuit and predictable path requirement. Choose the corresponding action: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
B:The option belongs to a different failure mechanism: Private endpoint connectivity and private DNS configuration are incomplete. That situation exhibits: Apps lose storage connectivity after the account public endpoint is disabled. For the stated case, the remedy is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
C:That design instead addresses another observed condition: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. Its technical cause is: No suitable site-to-site VPN connectivity has been configured. The current workload exhibits: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. Its targeted remedy is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
Question 918
An architect proposes this change: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy. The workload context is: A bank requires private predictable connectivity from a datacenter to Azure without depending on ordinary public-internet VPN paths. Which evidence would most directly validate the change?
- Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
- Establish VPN and test secured reachability from branch prefixes to approved Azure subnets.
- Test permitted prefix reachability between on-premises sites over their ExpressRoute attachments.
- Resolve the blob FQDN to a private IP and access the account from the approved VNet while public access is restricted.
Explanation
Correct Answer
A:The acceptance test is specific: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability. Its purpose is to establish that the proposed architecture works: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
Incorrect Answers
B:The alternative test targets: Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing. The scenario's actual proposed remedy is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy. Verify that one by: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
C:This check validates a different workload: Test permitted prefix reachability between on-premises sites over their ExpressRoute attachments. Its associated design is: Evaluate ExpressRoute Global Reach eligibility and configure it across supported circuits. The required acceptance test here is: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
D:That observation pertains to a separate failure: Apps lose storage connectivity after the account public endpoint is disabled. Its cause is: Private endpoint connectivity and private DNS configuration are incomplete. It does not confirm the result of this design. The direct proof would be: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
Question 919
During architecture troubleshooting, a team reports: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. Context: A bank requires private predictable connectivity from a datacenter to Azure without depending on ordinary public-internet VPN paths. Which underlying design mistake explains the observed behavior most precisely?
- Private endpoint connectivity and private DNS configuration are incomplete.
- Global Reach or an alternative private on-prem interconnect was not designed.
- The connectivity method does not meet the private circuit and predictable path requirement.
- No suitable site-to-site VPN connectivity has been configured.
Explanation
Correct Answer
C:The incident is explained by: The connectivity method does not meet the private circuit and predictable path requirement. The reported symptom is: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. The corresponding design fix is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
Incorrect Answers
A:The proposed diagnosis fits another scenario: Private endpoint connectivity and private DNS configuration are incomplete. It would typically be reflected by: Apps lose storage connectivity after the account public endpoint is disabled. The current evidence instead supports: The connectivity method does not meet the private circuit and predictable path requirement.
B:The alternative weakness is: Global Reach or an alternative private on-prem interconnect was not designed. Its associated failure is: The two sites remain isolated because their separate circuits only reach Azure private peers. Neither explains the present observation: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. The direct cause here is: The connectivity method does not meet the private circuit and predictable path requirement.
D:The proposed diagnosis fits another scenario: No suitable site-to-site VPN connectivity has been configured. It would typically be reflected by: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. The current evidence instead supports: The connectivity method does not meet the private circuit and predictable path requirement.
Question 920
A design review identifies: A bank requires private predictable connectivity from a datacenter to Azure without depending on ordinary public-internet VPN paths. The failure is: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. Select TWO distinct decisions that together provide the immediate technical solution AND an ongoing prevention control. A verification-only step does not replace either responsibility.
- Choose an appropriate site-to-site VPN Gateway connection with supported IPsec tunnels and routing.
- Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
- Recheck private DNS zone links and endpoint approvals when adding spokes.
- Evaluate ExpressRoute Global Reach eligibility and configure it across supported circuits.
- Monitor ExpressRoute BGP route counts, circuit health and provider diversity.
Explanation
Correct Answers
B:The targeted implementation is: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy. The problem is not generic resource availability: The connectivity method does not meet the private circuit and predictable path requirement. Verify the result by: Validate ExpressRoute circuit, private BGP sessions and private VNet prefix reachability.
E:The key follow-up control is: Monitor ExpressRoute BGP route counts, circuit health and provider diversity. It avoids recurrence of the scenario in which: Cloud connectivity quality degrades with commodity internet congestion and VPN overhead. It addresses: The connectivity method does not meet the private circuit and predictable path requirement.
Incorrect Answers
A:This choice mitigates an alternative scenario, where: A branch cannot reach its Azure VNet because no compatible IPsec tunnel is established. The underlying issue there is: No suitable site-to-site VPN connectivity has been configured. Here the root issue is: The connectivity method does not meet the private circuit and predictable path requirement. Choose the corresponding action: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
C:That safeguard manages another risk: Private endpoint connectivity and private DNS configuration are incomplete. Its scenario is: Apps lose storage connectivity after the account public endpoint is disabled. The present recurring risk is: The connectivity method does not meet the private circuit and predictable path requirement. The proper ongoing control is: Monitor ExpressRoute BGP route counts, circuit health and provider diversity.
D:This choice mitigates an alternative scenario, where: The two sites remain isolated because their separate circuits only reach Azure private peers. The underlying issue there is: Global Reach or an alternative private on-prem interconnect was not designed. Here the root issue is: The connectivity method does not meet the private circuit and predictable path requirement. Choose the corresponding action: Use Azure ExpressRoute private peering with a supported connectivity provider and suitable redundancy.
Designing Microsoft Azure Infrastructure Solutions (AZ-305) Practice Tests