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| Section | Objectives |
|---|---|
| Topic 1: Deploy and Upgrade Flow Environment | - Flow Network Security Cluster Preparation - Flow Virtual Networking Cluster Preparation - Upgrade Planning and Upgrade Paths - Virtual Switch and MTU Configuration - User Roles Configuration and Management |
| Topic 2: Troubleshoot Flow Virtual Networking | - Connectivity Issue Troubleshooting - Logs and Alerts Analysis for Networking Issues - Infrastructure Health Analysis |
| Topic 3: Configure Flow Virtual Networking | - Connectivity Options Configuration - VPC and Overlay Networks - External Network Connectivity |
| Topic 4: Configure Flow Network Security | - Policy Lifecycle and Modes Management - Application Flow Analysis - Security Policy Creation and Configuration |
| Topic 5: Troubleshoot Flow Network Security | - Identity-Based Policy and User Group Mapping Issues - Security Logs Analysis - Undesired Network Communication Troubleshooting |
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問題 #78
An administrator needs to configure a security policy that controls VM-to-VM communication within a category defined as secured entity. Which configuration action should the administrator take to restrict all intra-tier communication between the VMs within a category defined as secured entity?
答案：D
解題說明：
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 "Use deny-all intra-tier traffic configuration in the policy.". 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.
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 sounds plausible, but it does not align with the specific Flow policy object or precedence rule that controls this case. B sounds plausible, but it does not align with the specific Flow policy object or precedence rule that controls this case. For exam preparation, remember that Nutanix usually separates discovery from enforcement, routing from NAT, and access policy from identity mapping. Choosing the layer that truly owns the function is what leads to the right answer.
問題 #79
An administrator has been tasked with configuring virtual switches and setting the appropriate MTU size for a Nutanix cluster to optimize network performance. The cluster needs to support high-throughput traffic between VMs and ensure compatibility with external networks. The administrator needs to configure the virtual switches and MTU size to enable jumbo frames while ensuring that all nodes and network components are properly aligned to prevent packet loss or fragmentation. What is the first step to configure the virtual switches and MTU size in a Nutanix cluster for optimal network performance?
答案：B
解題說明：
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
"Configure the MTU size to 9000 on all nodes and virtual switches, and verify that all physical network switches support jumbo frames.". 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. 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.
問題 #80
An administrator is deploying a new multi-tenant environment in Prism Central and has created a VPC named TenantVPC1. The administrator needs to enable external connectivity for this VPC so that some services inside the VPC can be accessed from the corporate network without NAT translation, while other services require Internet access through SNAT translation. The administrator plans to use an External Network(s) to provision this connectivity. Which configuration should the administrator apply to satisfy this requirement?
答案：B
解題說明：
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.
問題 #81
An administrator observes a Network Controller Unreachable alert in Prism Central for a specific AHV cluster. All other management tasks for the cluster from Prism Central are succeeding and the cluster itself reports a healthy status. Which step is the most appropriate to investigate the cause of this specific alert?
答案：B
解題說明：
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 A, meaning "On the affected Prism Element cluster, verify that the Network Controller service is enabled and healthy on all CVMs.". 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. 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. 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 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.
問題 #82
An administrator plans to upgrade the Network Controller in a Flow Virtual Networking deployment. The environment includes multiple AHV clusters managed by Prism Central. Which prerequisite must be verified before upgrading the Network Controller?
答案：D
解題說明：
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 A, meaning "Flow Network Security must be upgraded to the target release before upgrading the Network Controller.". 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.
問題 #83
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