Question 1

What is the most restrictive NSX built-in role which will allow a user to apply configuration changes on an NSX Edge?

Accepted Answer

The Network Engineer role in NSX is a built-in role that provides permissions to apply configuration changes on NSX components, including NSX Edge. It is the
most restrictive role that still allows users to make changes, whereas roles like Network Operator are typically limited to read-only access.

Question 2

When configuring OSPF on Tier-0 Gateway, which three of the following must match in order to establish a neighbor relationship with an upstream router?
(Choose three.)

Accepted Answer

Area ID: Both routers must belong to the same OSPF area for a neighbor relationship to form.
MTU of the Uplink: Mismatched MTU settings can prevent the OSPF adjacency from forming, as OSPF packets may be dropped if they exceed the MTU size.
Subnet mask: Both routers must have the same subnet mask on the interface where OSPF is configured to establish a neighbor relationship.

Question 3

Which CLI command does an NSX administrator run on the NSX Manager to generate support bundle logs if the NSX UI is inaccessible?

Accepted Answer

When the NSX UI is inaccessible, an NSX administrator can use the get support-bundle file vcpnv.tgz command in the CLI on the NSX Manager to generate a
support bundle. This command creates a compressed file (vcpnv.tgz) containing logs and diagnostic information needed for troubleshooting.

Question 4

Which command on ESXi is used to verify the Local Control Plane connectivity with Central Control Plane?

Accepted Answer

The netcpa process is responsible for Local Control Plane (LCP) connectivity with the Central Control Plane (CCP) in NSX. Using the command esxcli network ip
connection list | grep netcpa, administrators can verify the connectivity status between the LCP on the ESXi host and the CCP, ensuring proper communication for
NSX operations.

Question 5

Which VMware GUI tool is used to identify problems in a physical network?

Accepted Answer

VMware Aria Operations Networks (formerly known as vRealize Network Insight) is a tool specifically designed for network visibility and troubleshooting. It provides
insights into both virtual and physical network infrastructures, making it ideal for identifying problems in a physical network.

Question 6

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A company Is deploying NSX micro-segmentation in their vSphere environment to secure a simple application composed of web. app, and database tiers.
The naming convention will be:
• WKS-WEB-SRV-XXX
• WKY-APP-SRR-XXX
• WKI-DB-SRR-XXX
What is the optimal way to group them to enforce security policies from NSX?

Accepted Answer

The answer is C. Group all by means of tags membership.
Tags are metadata that can be applied to physical servers, virtual machines, logical ports, and logical segments in NSX. Tags can be used for dynamic security
group membership, which allows for granular and flexible enforcement of security policies based on various criteria1
In the scenario, the company is deploying NSX micro-segmentation to secure a simple application composed of web, app, and database tiers. The naming
convention will be:
? WKS-WEB-SRV-XXX
? WKY-APP-SRR-XXX
? WKI-DB-SRR-XXX
The optimal way to group them to enforce security policies from NSX is to use tags membership. For example, the company can create three tags: Web, App, and
DB, and assign them to the corresponding VMs based on their names. Then, the company can create three security groups: Web-SG, App-SG, and DB-SG, and
use the tags as the membership criteria. Finally, the company can create and apply security policies to the security groups based on the desired rules and actions2
Using tags membership has several advantages over the other options:
? It is more scalable and dynamic than using Edge as a firewall between tiers. Edge firewall is a centralized solution that can create bottlenecks and performance
issues when handling large amounts of traffic3
? It is more simple and efficient than doing a service insertion to accomplish the task. Service insertion is a feature that allows for integrating third-party services
with NSX, such as antivirus or intrusion prevention systems. Service insertion is not necessary for basic micro-segmentation and can introduce additional
complexity and overhead.
? It is more flexible and granular than creating an Ethernet based security policy.
Ethernet based security policy is a type of policy that uses MAC addresses as the source or destination criteria. Ethernet based security policy is limited by the
scope of layer 2 domains and does not support logical constructs such as segments or groups.
To learn more about tags membership and how to use it for micro-segmentation in NSX, you can refer to the following resources:
? VMware NSX Documentation: Security Tag 1
? VMware NSX Micro-segmentation Day 1: Chapter 4 - Security Policy Design 2
? VMware NSX 4.x Professional: Security Groups
? VMware NSX 4.x Professional: Security Policies

Question 7

An NSX administrator wants to create a Tier-0 Gateway to support equal cost multi-path (ECMP) routing.
Which failover detection protocol must be used to meet this requirement?

Accepted Answer

To support Equal-Cost Multi-Path (ECMP) routing in an NSX environment, Bidirectional Forwarding Detection (BFD) must be used for failover detection. BFD is a
rapid failure detection protocol that works with ECMP to provide fast failure detection between routers. It helps in detecting link failures more quickly than traditional
protocols, ensuring that traffic is routed through available paths as quickly as possible.

Question 8

Which two built-in VMware tools will help identify the cause of packet loss on VLAN Segments? (Choose two.)
Which two built-in VMware tools will help identify the cause of packet loss on VLAN Segments? (Choose two.)

Accepted Answer

Traceflow: This tool helps in troubleshooting network issues by injecting synthetic packets into the network and observing their path. It allows administrators to
trace the packet flow across various network segments, making it easier to identify points of packet loss. Packet Capture: This tool enables detailed inspection of
traffic by capturing packets at specific points in the network. It allows administrators to analyze packet headers and payloads to determine if packet loss is
occurring and to identify possible causes.

Question 9

Which two statements describe the characteristics of an Edge Cluster in NSX? (Choose two.)

Accepted Answer

An NSX Edge Cluster can contain a mix of edge node types, meaning it can have both virtual machine (VM) and bare-metal edge nodes within the same cluster.
An NSX Edge Cluster supports a maximum of 8 edge nodes, allowing for scalability while adhering to the NSX design limitations for edge clusters.

Question 10

Which two choices are use cases for Distributed Intrusion Detection? (Choose two.)

Accepted Answer

According to the VMware NSX Documentation, these are two of the use cases for Distributed Intrusion Detection, which is a feature of NSX Network Detection
and Response:
? Quarantine workloads based on vulnerabilities: You can use Distributed Intrusion
Detection to detect vulnerabilities in your workloads and apply quarantine actions to isolate them from the network until they are remediated.
? Identify security vulnerabilities in the workloads: You can use Distributed Intrusion
Detection to scan your workloads for known vulnerabilities and generate reports that show the severity, impact, and remediation steps for each vulnerability.