NCP-NS-7.5 Nutanix Certified Professional - Network and Security (NCP-NS) 7.5 Questions and Answers

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is C, meaning “Increase the MTU by an additional 58 bytes for the Geneve header.”. MTU planning matters because encapsulation adds overhead. When overlay, Geneve, VXLAN, or IPSec is present, a path that looks healthy at 1500 bytes can still fragment or drop larger frames unless the underlay and endpoints are sized correctly. Service insertion introduces an additional dataplane hop through a network function VM. That makes correct vNIC pairing, health monitoring, and MTU sizing essential, because steering can fail even when the firewall appliance itself appears powered on. This is a Flow policy design question, so categories, secured entities, rule direction, policy mode, and policy precedence matter more than simple IP connectivity assumptions. In other words, this is less about broad infrastructure suspicion and more about finding the exact Nutanix decision point that explains the behavior. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome.

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is D, meaning “Traffic flows only in one direction, blocking return traffic.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved.

Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is that Flow is intentionally modular. Networking objects determine reachability, security objects determine permission, and lifecycle steps determine supportability. Mixing those layers usually produces the distractor answers.

What makes this a strong certification question is that several answers look technically related, but only one aligns with the exact behavior of Flow networking or Flow security. The correct response is D, meaning “It manages configuration, monitoring, and optimization of network resources.”. With BGP in Flow Virtual Networking, route exchange depends on both gateway objects and a correctly defined peering session. A healthy gateway alone is not enough; the session, peer parameters, and advertised prefixes must all align. A VPN showing an “Up” state confirms tunnel establishment, but it does not guarantee end-to-end reachability. Actual traffic flow still depends on route advertisement or static routing, proper prefixes, and correct MTU considerations. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result. By contrast, A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. In practice, administrators who anchor their decisions to.

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is A, meaning “Network Controller must be enabled in Prism Central.”. The Network Controller supplies the control-plane services required for Flow Virtual Networking. Without it, Prism Central cannot build and manage overlays, gateways, and related virtual networking constructs consistently across the cluster. In lifecycle terms, Nutanix expects administrators to respect prerequisites, compatibility, and dependency order before enabling or upgrading Flow-related services.

In other words, this is less about broad infrastructure suspicion and more about finding the exact Nutanix decision point that explains the behavior. Notice that B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. Seen operationally, the correct response is the least disruptive and most deterministic one. It changes the exact Nutanix setting that governs the outcome instead of introducing workarounds elsewhere in the stack.

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is A, meaning “Create two External Networks for TenantVPC1: one NAT (for Internet access) and one Routed/No-NAT (for corporate network access). Attach both to the VPC.”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. In lifecycle terms, Nutanix expects administrators to respect prerequisites, compatibility, and dependency order before enabling or upgrading Flow-related services.

Notice that B is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. C is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. That is the underlying Nutanix principle being validated: solve the issue at the feature that owns the behavior, not by changing unrelated infrastructure settings that happen to sound network-oriented.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is A, meaning “It acts as the entry and exit point for traffic to and from a VPC.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved.

Seen from a design perspective, the correct answer is the least ambiguous and most supportable implementation path inside Prism Central and AHV. Notice that B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. In practice, administrators who anchor their decisions to Prism Central constructs—such as VPCs, external networks, ERPs, categories, and policy modes—arrive at the correct answer faster and avoid unnecessary changes.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is C, meaning “Create a VPC with a single No-NAT External Network with four gateway nodes.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that A is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. B is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. The key takeaway is that Flow is intentionally modular. Networking objects determine reachability, security.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is B, meaning “Monitor”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. This is a Flow policy design question, so categories, secured entities, rule direction, policy mode, and policy precedence matter more than simple IP connectivity assumptions.

Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. In practice, administrators who anchor their decisions to Prism Central constructs—such as VPCs, external networks, ERPs, categories, and policy modes—arrive at the correct answer faster and avoid unnecessary changes.

What makes this a strong certification question is that several answers look technically related, but only one aligns with the exact behavior of Flow networking or Flow security. The correct response is B, meaning “The VPC has no default route configured to use the external subnet.”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved.

Notice that A addresses exposure of a single VM, not the broader routing or security behavior under discussion. C is a disruptive action and does not address the actual control-plane or policy requirement being tested. That is the underlying Nutanix principle being validated: solve the issue at the feature that owns the behavior, not by changing unrelated infrastructure settings that happen to sound network-oriented.

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is D, meaning “The second BGP gateway requires a BGP session configured to peer with the external router.”. With BGP in Flow Virtual Networking, route exchange depends on both gateway objects and a correctly defined peering session. A healthy gateway alone is not enough; the session, peer parameters, and advertised prefixes must all align. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. By contrast, A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is that Flow is intentionally modular. Networking objects determine reachability, security objects determine permission, and lifecycle steps determine supportability. Mixing those layers usually produces the distractor answers..

A reliable method here is to translate the scenario into Nutanix terms—VPC routing, external connectivity, policy scope, identity mapping, or upgrade readiness—and then choose the answer that directly addresses that domain. The correct response is B, meaning “Edit the PubSite-Prod-Web entity group's intra-tier rule.”. Enforce mode is the stage where Flow stops acting like a discovery tool and starts behaving like a stateful control point. Traffic allowed by the policy continues normally, while traffic that does not match an allowed rule is denied according to policy logic. An Isolation Policy is built to stop communication between defined groups. Unlike an application policy, it is intended to create a hard boundary, making it the correct choice when the requirement is “no traffic between these entities.” This is a Flow policy design question, so categories, secured entities, rule direction, policy mode, and policy precedence matter more than simple IP connectivity assumptions. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is A, meaning “Update the ERPs for Tenant-B-VPC.”. Externally Routable Prefixes determine which overlay prefixes are advertised beyond the VPC. If the ERP does not cover the workload subnet, upstream devices never learn a valid return path, even when the local VPC appears healthy. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved.

In other words, this is less about broad infrastructure suspicion and more about finding the exact Nutanix decision point that explains the behavior. Notice that B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. That is the underlying Nutanix principle being validated: solve the issue at the feature that owns the behavior, not by changing unrelated infrastructure settings that happen to sound network-oriented.

A reliable method here is to translate the scenario into Nutanix terms—VPC routing, external connectivity, policy scope, identity mapping, or upgrade readiness—and then choose the answer that directly addresses that domain. The correct response is D, meaning “Create a VPC with subnets for each tier and configure the Externally Routable Prefix to include only web subnets.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. In lifecycle terms, Nutanix expects administrators to respect prerequisites, compatibility, and dependency order before enabling or upgrading Flow-related services. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. Seen operationally, the correct response is.

From a Nutanix exam perspective, this question is really testing whether the administrator understands the control point that actually governs the behavior shown in the scenario. The correct response is C, meaning “The VPC does not have a NO-NAT network configured to advertise the routes.”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. With BGP in Flow Virtual Networking, route exchange depends on both gateway objects and a correctly defined peering session. A healthy gateway alone is not enough; the session, peer parameters, and advertised prefixes must all align. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that A is not appropriate because NAT changes addressing.

From a Nutanix exam perspective, this question is really testing whether the administrator understands the control point that actually governs the behavior shown in the scenario. The correct response is A, meaning “2058 Bytes”. MTU planning matters because encapsulation adds overhead. When overlay, Geneve, VXLAN, or IPSec is present, a path that looks healthy at 1500 bytes can still fragment or drop larger frames unless the underlay and endpoints are sized correctly. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result. By contrast, B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. Seen operationally, the correct response is the least disruptive and most deterministic one. It changes the exact Nutanix setting that governs the outcome instead of introducing workarounds elsewhere in the stack. A strong exam habit is to ask which Nutanix construct would have to change for the symptom.

This item is best solved by thinking like an operator in Prism Central: first identify whether the problem is design, control-plane state, or policy logic, then pick the option tied to that layer. The correct response is A, meaning “MTU on guest VMs exceeds recommended size for IPSec.”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. A VPN showing an “Up” state confirms tunnel establishment, but it does not guarantee end-to-end reachability. Actual traffic flow still depends on route advertisement or static routing, proper prefixes, and correct MTU considerations. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. By contrast, B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. For exam.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is B, meaning “Creates a hub-and-spoke VPC for routing”. A Transit VPC acts as the routing hub for spoke VPCs and is commonly used when administrators want shared services or inter-VPC communication without pushing route complexity into the physical network. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result.

In other words, this is less about broad infrastructure suspicion and more about finding the exact Nutanix decision point that explains the behavior. Notice that A is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. Seen operationally, the correct response is the least disruptive and most deterministic one. It changes the exact Nutanix setting that governs the outcome instead of introducing workarounds elsewhere in the stack.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is A, meaning “VPC name and one External Access VLAN”. A Transit VPC acts as the routing hub for spoke VPCs and is commonly used when administrators want shared services or inter-VPC communication without pushing route complexity into the physical network. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is that Flow is.

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is D, meaning “Destination prefix: 172.16.2.0/24, Next-Hop: Ext_Net_Internal”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved.

Seen from a design perspective, the correct answer is the least ambiguous and most supportable implementation path inside Prism Central and AHV. Notice that A is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. B is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. Seen operationally, the correct response is the least disruptive and most deterministic one. It changes the exact Nutanix setting that governs the outcome instead of introducing workarounds elsewhere in the stack.

From a Nutanix exam perspective, this question is really testing whether the administrator understands the control point that actually governs the behavior shown in the scenario. The correct response is D, meaning “Create a Layer 2 connectivity between the subnets and perform live migration.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved.

Seen from a design perspective, the correct answer is the least ambiguous and most supportable implementation path inside Prism Central and AHV. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. That is the underlying Nutanix principle being validated: solve the issue at the feature that owns the behavior, not by changing unrelated infrastructure settings that happen to sound network-oriented.

This item is best solved by thinking like an operator in Prism Central: first identify whether the problem is design, control-plane state, or policy logic, then pick the option tied to that layer. The correct response is C, meaning “Configure an external network for the Web tier subnet and leave App and Database tiers private.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result. By contrast, A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is that Flow is intentionally modular. Networking objects determine reachability, security objects determine permission, and lifecycle steps determine supportability. Mixing those layers usually produces the distractor answers. A strong exam habit is to ask which Nutanix construct would have to.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is A, meaning “Review cluster health status, checking for any warnings or alerts relevant to the performance issues.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. This is a Flow policy design question, so categories, secured entities, rule direction, policy mode, and policy precedence matter more than simple IP connectivity assumptions. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. Seen operationally, the correct response is the least.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is AB, which corresponds to Flow Network Security is a stateful firewall. and Flow Network Security supports L3 and L4-based firewall rules.. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. This is a Flow policy design question, so categories, secured entities, rule direction, policy mode, and policy precedence matter more than simple IP connectivity assumptions. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. D does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is.

The most professional way to evaluate this question is to map the symptom to the Nutanix feature responsible for that function rather than reacting to secondary details in the prompt. The correct response is D, meaning “There are no more available IP addresses in the address pool configured for Floating IPs in that external network.”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. Seen from a design perspective, the correct answer is the least ambiguous and most supportable implementation path inside Prism Central and AHV. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. Seen operationally, the correct response is.

What makes this a strong certification question is that several answers look technically related, but only one aligns with the exact behavior of Flow networking or Flow security. The correct response is B, meaning “VLAN ID does not match in the remote data center.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. A strong exam habit is to ask which Nutanix construct would have to change for the symptom or requirement to change. That mental shortcut usually separates the real answer from distractors that mention generic networking steps, disruptive resets, or unrelated configuration objects. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. For exam preparation, remember that Nutanix usually separates discovery.

The clean way to read this scenario is to separate what is merely present in the environment from the single Nutanix construct that actually satisfies the requirement. The correct response is C, meaning “Assign a Floating IP address to the virtual machine.”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result.

In other words, this is less about broad infrastructure suspicion and more about finding the exact Nutanix decision point that explains the behavior. Notice that A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. In practice, administrators who anchor their decisions to Prism Central constructs—such as VPCs, external networks, ERPs, categories, and policy modes—arrive at the correct answer faster and avoid unnecessary changes.

This item is best solved by thinking like an operator in Prism Central: first identify whether the problem is design, control-plane state, or policy logic, then pick the option tied to that layer. The correct response is A, meaning “Enable the Network Controller in Prism Central.”. The Network Controller supplies the control-plane services required for Flow Virtual Networking. Without it, Prism Central cannot build and manage overlays, gateways, and related virtual networking constructs consistently across the cluster. In lifecycle terms, Nutanix expects administrators to respect prerequisites, compatibility, and dependency order before enabling or upgrading Flow-related services.

In other words, this is less about broad infrastructure suspicion and more about finding the exact Nutanix decision point that explains the behavior. Notice that B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is that Flow is intentionally modular. Networking objects determine reachability, security objects determine permission, and lifecycle steps determine supportability. Mixing those layers usually produces the distractor answers.

What makes this a strong certification question is that several answers look technically related, but only one aligns with the exact behavior of Flow networking or Flow security. The correct response is B, meaning “Mismatch in ERP configuration in user and Transit VPC”. A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC’s north-south path. Externally Routable Prefixes determine which overlay prefixes are advertised beyond the VPC. If the ERP does not cover the workload subnet, upstream devices never learn a valid return path, even when the local VPC appears healthy. Operationally, Flow Virtual Networking should be checked from the control plane outward: gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. By contrast, A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C addresses exposure of a single VM, not the broader routing or security behavior under discussion. Seen operationally, the correct response is the least disruptive and most deterministic.