VMware VMware NSX-T Data Center 3.1 Security 5V0-41.21 Exam Dumps: Updated Questions & Answers (October 2025)

The NSX Edge nodes require access to the Internet to download category and reputation definitions, and a layer 7 gateway firewall rule must be configured on the tier-1 gateway uplink to capture DNS traffic. This will allow the URL Analysis service to analyze incoming DNS traffic and block malicious requests. For more information, please see this VMware Documentation article[1], which explains how to configure URL Analysis on NSX.

[1] https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/nsxt_31_url_analysis/GUID-46BC65F3-7A45-4A9F-B444-E4A1A7E0AC4A.html

Zero-Trust Networks is a security concept that assumes that all devices, users, and networks are untrusted until they can be verified. This means that all network-connected devices must be verified for their identity and integrity before they are granted access to resources. This is done continually, meaning that devices are verified every time they try to access a resource, rather than being trusted permanently.

C. Network connected devices should only be trusted if their identity and integrity can be verified continually. This is the main concept of Zero-Trust Networks, every device that wants to access the network should be authenticated and verified its identity and integrity.

References:

Zero Trust Networks, Forrester Research https://www.forrester.com/report/Zero+Trust+Networks/-/E-RES146810

Zero Trust Security: From Theory to Practice, NIST https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800

In order to apply the rules, the vNIC of the virtual machine must be connected to an NSX managed segment. The NSX managed segment is a logical representation of the virtual network, and all rules are applied at this level.

For more information on NSX Distributed Firewall and how to configure it, please refer to the NSX-T Data Center documentation: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.0/nsx-t-3.0-firewall/GUID-B6B835F2-B6F2-4468-8F8E-6F7B9B9D6E91.html

For further reading, see the VMware NSX-T Data Center Administration Guide (https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/com.vmware.nsxt.admin.doc/GUID-A1A7F233-5F9F-4B2E-B3D3-0F8B593032F6.html)  for more information on configuring the

as the CVE filter can be used to filter out any events which are related to a specific vulnerability

The component in a transport node that receives the firewall configuration from the central control plane is the NSX-MPA (Management Plane Agent). The NSX-MPA runs on each transport node and is responsible for connecting to the NSX-T central control plane and receiving the configuration for the transport node. It is also responsible for pushing the configuration down to the other components on the transport node, such as the NSX-Proxy, NSX-Appl-Proxy, and NSX-CCP. References: [1] https://docs.vmware.com/en/VMware-NSX-T/3.0/vmware-nsx-t-30-administration-guide/GUID-8C33F5B5-1B98-4A5F-B5B1-D70BE45F9FAD.html  [2] https://docs.vmware.com/en/VMware-NSX-T/3.0/com.vmware.nsxt.install.doc/GUID-C129F7F0-E6F8-4A14-B2B0-9D6F3A7A3F62.

The port number used by transport nodes to export firewall statistics to NSX Manager is 4789.

For further reading, see the VMware NSX-T Data Center Administration Guide (https://pubs.vmware.com/NSX-T-Data-Center/index.html#com.vmware.nsxt.admin.doc/GUID-15A2EBC2-C39D-45F3-B847-DC18F7B1E9B9.html)  for more information on transport nodes and firewall statistics.

When deploying an NSX Edge Virtual Machine through an ISO image, the virtual network interface card (vNIC) type that must be selected is VMXNET3 in order to allow participation in overlay and VLAN transport zones. VMXNET3 is a high-performance and feature-rich paravirtualized NIC that provides a significant performance boost over other vNIC types, as well as support for both overlay and VLAN transport zones.

For more information on deploying an NSX Edge Virtual Machine through an ISO image, please refer to the NSX-T Data Center documentation: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.0/nsx-t-3.0-deploy-config/GUID-A782558B-A72B-4848-B6DB-7A8A9E71FFD6.html

The NSX-T IDS/IPS updates are provided through VMware's cloud-based internet service at two different intervals: daily periodic updates, and off-schedule for 0-day updates. Daily periodic updates are provided on a daily basis to ensure the latest threat signature files. Off-schedule updates are provided as needed when a 0-day threat is identified, allowing customers to have the most up-to-date protection from the latest threats. References: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/nsxt_31_ids_ips/GUID-D0F3F66C-FF83-4B3C-B0A3-C12F19D7A8AD.html  https://blogs.vmware.com/networkvirtualization/2020/02/nsx-t-ids-and-ips-threat-protection.html

East-West service insertion refers to the ability to insert security services, such as firewall and intrusion detection and prevention, between virtual machines (VMs) that are communicating within the same logical network.

One of the insertion points for East-West service insertion is the virtual network interface card (vNIC) of the guest VM. The vNIC is the virtual representation of a physical NIC on a VM, and it connects the VM to the virtual network. By inserting security services at the vNIC level, traffic between VMs can be inspected and secured before it reaches the virtual switch.

VMware NSX-T Data Center documentation https://docs.vmware.com/en/VMware-NSX-T-Data-Center/index.html

VMware NSX-T Data Center Security documentation https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/com.vmware.nsxt.security.doc/GUID-8F7C8B70-F1A6-4F31-8D6C-A0A9B9C9A9D3.html