The proposed action terminates the managed VPN service at the shared routing hub; transit gateway route tables must grant each destination access deliberately, supporting consolidated VPN access to selected VPC attachments but leaving learned routes from a virtual private gateway unmet.

This approach terminates the AWS-side VPN tunnels at the virtual private gateway; a transit gateway is a different termination pattern with broader attachment routing, which helps with VPC-local hybrid VPN termination instead of delivering learned routes from a virtual private gateway.

Although this setting links multiple regional transit routing domains to the on-premises circuit, allowed prefixes and ASN constraints need attention during association; this concerns centralized hybrid routing across regional hubs, not the specified learned routes from a virtual private gateway.

The proposed action inspects supported session traffic against the configured stateful domain policy; DNS-only blocking is less comprehensive than network-path filtering for some application flows, supporting egress enforcement based on inspected traffic attributes but leaving explainable stateful policy decisions unmet.

This approach applies managed stateless and stateful inspection to forwarded network packets; a deployed firewall without route redirection is bypassed by ordinary traffic, which helps with centrally enforced traffic inspection instead of delivering explainable stateful policy decisions.

This alternative makes a consistent set of stateless and stateful rules deployable to multiple firewalls; copying independent manual rule edits promotes configuration drift, so it addresses consistent managed network inspection policy rather than the required explainable stateful policy decisions.

This alternative authorizes stateful source membership rather than an entire shifting address range; security group references avoid maintaining fixed instance IP lists, so it addresses narrowly scoped database access from application instances rather than the required CIDR-specific subnet boundary rejection.

Although this setting handles stateless packet filtering in both directions of a connection, authorizing only the destination listener port ignores the client's return-port range; this concerns completed bidirectional TCP sessions through a subnet ACL, not the specified CIDR-specific subnet boundary rejection.

The proposed action permits return packets of established allowed flows under stateful evaluation; NACLs remain stateless and need appropriate rules in both directions, supporting automatic response permission for established EC2 flows but leaving CIDR-specific subnet boundary rejection unmet.

This alternative limits initiations leaving resources attached to the group; broad 0.0.0.0/0 egress would let instances bypass the intended proxy, so it addresses least-privilege EC2 outbound connection control rather than the required CIDR-specific subnet boundary rejection.

This alternative allows the resolver endpoint to exchange UDP and TCP DNS with its upstreams; changing record TTL cannot compensate for a missing route or blocked DNS flow, so it addresses reachable hybrid DNS transport for resolver endpoints rather than the required conditional resolution toward on-prem DNS and inbound corporate name queries for private AWS records.

The proposed action filters recursive DNS names before normal resolution where configured; a public hosted zone health check does not inspect workload resolver traffic, supporting enforced malicious-domain DNS query blocking but leaving conditional resolution toward on-prem DNS and inbound corporate name queries for private AWS records unmet.

This approach determines whether rule-based forwarding supersedes local private zone answers; editing public DNS records will not change the VPC resolver's rule selection, which helps with expected DNS authority selection within the VPC resolver instead of delivering conditional resolution toward on-prem DNS and inbound corporate name queries for private AWS records.

This approach verifies multicast-specific configuration beyond normal IP unicast routes; a TGW unicast route alone does not join a multicast group, which helps with active receiver enrollment and multicast forwarding instead of delivering one-to-many multicast stream delivery.

This alternative establishes the designated sender and receiver bindings; receivers must join or be registered under the selected multicast model, so it addresses functioning group-delivery distribution rather than the required one-to-many multicast stream delivery.

Although this setting sends separate messages when every receiver has different data, multicast replication is valuable only when multiple receivers should get the same content; this concerns recipient-specific delivery semantics, not the specified one-to-many multicast stream delivery.

Although this setting accounts for network, router, DNS, reserved, and broadcast-address slots, treating every mathematical IPv4 address in the CIDR as assignable overstates capacity; this concerns accurate usable private IPv4 capacity planning, not the specified available subnet addressing for scale-out.

The proposed action provides source-translated outbound IPv4 access for private workloads; a route to an internet gateway alone does not make a private-addressed instance publicly reachable, supporting outbound-only IPv4 internet access for private instances but leaving available subnet addressing for scale-out unmet.

This alternative permits initiated outbound IPv6 flows while blocking new internet-originated flows; ordinary NAT gateways are chiefly an IPv4 translation pattern, so it addresses outbound-only IPv6 connectivity rather than the required available subnet addressing for scale-out.

This alternative inspects supported session traffic against the configured stateful domain policy; DNS-only blocking is less comprehensive than network-path filtering for some application flows, so it addresses egress enforcement based on inspected traffic attributes rather than the required centrally enforced traffic inspection and explainable stateful policy decisions.

The proposed action keeps both directions of the flow through the stateful inspection path; rules cannot track a return flow they never observe, supporting stateful firewall session continuity but leaving centrally enforced traffic inspection and explainable stateful policy decisions unmet.

This approach makes a consistent set of stateless and stateful rules deployable to multiple firewalls; copying independent manual rule edits promotes configuration drift, which helps with consistent managed network inspection policy instead of delivering centrally enforced traffic inspection and explainable stateful policy decisions.

Fail-open mode allows queries to proceed when inspection is unavailable, favoring availability over the stated fail-closed security control. That is the opposite of the regulated requirement.

Weighted Route 53 records distribute authoritative answers, but they do not decide DNS Firewall failure behavior. Query inspection could still be unavailable regardless of record weights.

Flow Logs summarize observed network flows and do not configure Resolver DNS Firewall evaluation behavior. Changing a telemetry interval does not block queries that evade inspection.

The proposed action establishes a repeatable shared contract for network composition; duplication of unversioned snippets makes later policy corrections inconsistent, supporting governance of reusable IaC network resources but leaving portable networking configuration across accounts unmet.

This approach deploys VPC, subnet, routing and related resources as declarative stacks; console-only manual changes increase configuration drift and inconsistency, which helps with reproducible multi-account network construction instead of delivering portable networking configuration across accounts.

This alternative synthesizes infrastructure definitions from code for consistent deployments; hardcoded account-specific IDs weaken portability, so it addresses programmatic reuse of network infrastructure components rather than the required portable networking configuration across accounts.

This approach aggregates WAN and AWS network telemetry across managed connections; individual interface packet captures do not provide a persistent WAN health overview, which helps with consolidated operational status for global links instead of delivering accurate branch-to-transit topology inventory.

This alternative displays managed global network resources and connections; a single VPC subnet route list lacks the global context, so it addresses visibility into multi-Region WAN attachment relationships rather than the required accurate branch-to-transit topology inventory.

Although this setting evaluates a modeled routing path through transit gateway route tables, a general health-check probe does not describe transit route resolution; this concerns transit-layer path assessment between attachments, not the specified accurate branch-to-transit topology inventory.

The proposed action allows Resolver to send matching queries to more than one specified upstream resolver; duplicating a forwarding rule without independent targets does not repair the upstream single point of failure, supporting resilient upstream name resolution for hybrid queries but leaving centrally managed hybrid DNS forwarding unmet.

This approach accepts DNS requests originating outside the VPC and resolves through the VPC resolver; endpoint security groups and network routes must permit DNS traffic to the inbound addresses, which helps with on-premises-to-AWS private DNS resolution instead of delivering centrally managed hybrid DNS forwarding.

This alternative forwards matching domain queries from the VPC resolver to specified external DNS server addresses; outbound endpoint reachability over the hybrid route must be established first, so it addresses AWS-to-on-premises conditional DNS forwarding rather than the required centrally managed hybrid DNS forwarding.

The proposed action links privately scoped authoritative records with an inbound hybrid query path; a private hosted zone alone does not provide a routable on-premises query target, supporting private resolution of cloud-hosted names from branch networks but leaving centrally managed hybrid DNS forwarding unmet.