New ActualPDF 6V0-21.25 Exam Questions Real 6V0-21.25 Dumps Updated on Aug 04, 2026 [Q42-Q65]

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New ActualPDF 6V0-21.25 Exam Questions| Real 6V0-21.25 Dumps Updated on Aug 04, 2026

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VMware 6V0-21.25 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Advanced Threat Prevention: Covers a suite of analysis tools designed to defend against both known and unknown advanced attack vectors.
Topic 2
  • Security Automation: Covers integrating tools and scripting to automate firewall policy creation, security group management, and network configuration.
Topic 3
  • Gateway Firewall: Covers edge security devices that control and filter north-south network traffic, blocking unauthorized access at the network perimeter.
Topic 4
  • Protecting Container Workloads with vDefend Firewall: Covers applying granular, context-based security enforcement to container workloads to enable zero-trust and prevent lateral threats.
Topic 5
  • Context Aware Firewall and Identity Firewall: Covers advanced firewall controls that use user identity and application context rather than just IP addresses and ports.
Topic 6
  • Role-Based Access Control: Covers creating roles and groups within the security operations team to grant appropriate portal access.
Topic 7
  • VMware vDefend Firewall Architecture: Covers the design and components of VMware's software-defined, distributed security architecture.
Topic 8
  • NTA (Network Traffic Analysis) & NDR (Network Detection and Response): Covers proactive threat detection and response using NTA and NDR capabilities to secure virtualized workloads and environments.
Topic 9
  • VMware vDefend Firewall Management: Covers day-to-day administration and management of the distributed firewall solution for securing virtualized workloads.
Topic 10
  • Private Cloud Data Center Security: Covers foundational concepts for securing workloads and infrastructure within a private cloud data center environment.
Topic 11
  • IDPS (Intrusion Detection and Prevention System): Covers inspecting network traffic at every hypervisor and workload level to detect and prevent advanced cyber threats.
Topic 12
  • Lateral Protection with vDefend Distributed Firewall: Covers implementing policy-based rules to control east-west traffic and prevent lateral threat movement across the private cloud.
Topic 13
  • Planning Application Segmentation with vDefend Security Intelligence: Covers using the distributed analytics engine to analyze workload and network context for developing micro-segmentation policies.
Topic 14
  • Shared Services Platform (SSP): Covers the back-end security data and analytics platform that underpins vDefend security services.
Topic 15
  • Malware Prevention Detection: Covers safeguarding private cloud workloads against ransomware and malicious activity targeting virtualized environments.

 

NEW QUESTION # 42
Which feature is available when using IDS on the Edge Gateway and not available on distributed IDS?

  • A. Expanded Signature Set
  • B. TLS Inspection
  • C. Detection Mode
  • D. Impact Score

Answer: B

Explanation:
A significant portion of modern malware and exploit traffic hides inside encrypted HTTPS tunnels. To inspect this traffic, the security appliance must decrypt it first.
TLS Inspection (Decryption/Proxying) is highly resource-intensive and requires complex certificate management (acting as a Man-in-the-Middle). In the vDefend architecture, this heavy lifting is delegated to the Edge Nodes via the Gateway IDS/IPS.
The Distributed IDS/IPS-which runs directly inside the ESXi hypervisor kernel at the VM's vNIC-is designed for lightning-fast, highly optimized East-West inspection without massive CPU overhead. Therefore, inline TLS decryption/inspection is exclusively a Gateway IDS/IPS feature and is not performed by the Distributed IDS engine.


NEW QUESTION # 43
What happens if two firewall rules apply to the same traffic flow within a single section?
Response:

  • A. Both rules are ignored, and traffic is dropped
  • B. The topmost rule in the section is applied first
  • C. The rule with the longer name takes precedence
  • D. The more permissive rule overrides the restrictive one

Answer: B


NEW QUESTION # 44
Which three best practices improve NTA/NDR accuracy and operational effectiveness?
(Choose three)
Response:

  • A. Limit NSX Manager logging to reduce overhead
  • B. Regularly update threat intelligence subscriptions
  • C. Deploy flow collection sensors across all clusters
  • D. Enable DPI (Deep Packet Inspection) only during audits
  • E. Establish baseline communication patterns for workloads

Answer: B,C,E


NEW QUESTION # 45
Which three user roles or privileges can be assigned in NSX Manager to implement RBAC for firewall operations?
(Choose three)
Response:

  • A. Security Admin
  • B. NSX Cloud Consumption Role
  • C. Backup Administrator
  • D. Auditor
  • E. Network Engineer

Answer: A,D,E


NEW QUESTION # 46
What is the primary purpose of Network Traffic Analysis (NTA) in VMware NSX?
Response:

  • A. To display physical switch interface status
  • B. To monitor and identify abnormal traffic patterns within virtual networks
  • C. To analyze VM snapshots and disk usage
  • D. To manage DHCP and DNS configurations

Answer: B


NEW QUESTION # 47
Which two practices are recommended when designing lateral protection strategies for segmented workloads?
(Choose two)
Response:

  • A. Leverage security groups and dynamic membership
  • B. Disable DFW logging for compliance
  • C. Allow all intra-cluster traffic for performance
  • D. Use DNS names in all firewall rules
  • E. Define granular security policies per application tier

Answer: A,E


NEW QUESTION # 48
Which of the following statements are true about Distributed Malware? (Select all that apply)

  • A. Offers Detection and Prevention
  • B. Sends events to NDR
  • C. All of the above
  • D. Offers Detection
  • E. Supports Windows and Linux

Answer: C

Explanation:
VMware vDefend Distributed Malware Prevention is a highly comprehensive feature set that operates at the hypervisor level (via Guest Introspection).
Detection and Prevention: It can be configured in "Detect Only" mode for visibility, but it fully supports "Prevention" mode to actively block malicious file writes/transfers.
OS Support: Because it leverages a thin agent/introspection architecture, it provides native support for protecting both Windows and Linux virtual machines.
NDR Integration: Every time the Malware Prevention engine detects a suspicious file, extracts a hash, or performs local static analysis, it automatically forwards this threat event telemetry up to the Network Detection and Response (NDR) engine for cross-correlation.
Therefore, "All of the above" accurately describes its capabilities.


NEW QUESTION # 49
For Distributed IDS/IPS to work, a Distributed firewall must be enabled.

  • A. True
  • B. False

Answer: A

Explanation:
This statement is True. In the VMware vDefend architecture, the Distributed Intrusion Detection and Prevention System (D-IDS/IPS) is not a standalone network appliance; it is an advanced feature layered directly on top of the existing Distributed Firewall (DFW) infrastructure.
The DFW provides the foundational traffic interception point, grouping constructs, and policy framework within the hypervisor kernel. When a D-IDS policy is created, it fundamentally relies on the DFW engine to steer the relevant East-West packets into the IDS inspection engine at the vNIC. If the Distributed Firewall is disabled globally, the underlying interception mechanism is turned off, meaning Distributed IDS/IPS cannot function.


NEW QUESTION # 50
Which three types of malware can be detected and blocked by NSX Malware Prevention?
(Choose three)
Response:

  • A. Data deduplication anomalies
  • B. Ransomware
  • C. Keyloggers
  • D. Botnet droppers
  • E. DNS cache corruption

Answer: B,C,D


NEW QUESTION # 51
What is the primary function of VMware's Advanced Threat Prevention (ATP) capabilities in a private cloud environment?
Response:

  • A. To enforce compliance for vSphere hardware compatibility
  • B. To reduce storage IO latency during high-load operations
  • C. To replicate VMs across availability zones for backup
  • D. To detect and prevent both known and unknown cyber threats using behavioral analysis and sandboxing

Answer: D


NEW QUESTION # 52
Which authentication source is commonly integrated with vDefend Identity Firewall to enable user-based rule enforcement?
Response:

  • A. vSphere Trust Authority
  • B. Active Directory
  • C. vCenter Inventory Service
  • D. NSX Application Platform

Answer: B


NEW QUESTION # 53
Which one of the following is NOT one of the use-cases of Distributed Intrusion Detection and Prevention?

  • A. Provide routing capability for an air-gapped network to securely access the internet
  • B. Enable software-based IDS/IPS for Critical applications
  • C. Achieve regulatory compliance requirements for PCI-DSS, HIPAA, SOX
  • D. Prevent lateral movement of attackers by blocking vulnerabilities

Answer: A

Explanation:
VMware vDefend Distributed IDS/IPS is a highly specialized, software-based inspection engine designed specifically to detect and block malicious payloads (exploits) moving laterally (East-West) between virtual machines. Because it operates at the vNIC level, it is perfect for achieving regulatory compliance (Option D), protecting critical internal apps (Option B), and stopping lateral movement (Option C).
However, it is not a router. Providing internet access routing to an air-gapped network is a fundamental routing and NAT function (typically handled by a Tier-0/Tier-1 Gateway or a physical perimeter firewall), completely unrelated to the Deep Packet Inspection signature-matching functions of the Distributed IDS engine.


NEW QUESTION # 54
In vDefend Malware Detection and Prevention, what technology is the sandbox built on?

  • A. VMware virtualization
  • B. Dedicated physical hardware
  • C. Full System Emulation
  • D. KVM virtualization

Answer: C

Explanation:
When a file is flagged as suspicious and sent to the vDefend Advanced Threat Prevention (ATP) cloud for dynamic analysis, it is placed inside a sandbox. The sandbox utilized by VMware vDefend is built on Full System Emulation (FSE), a custom architectural approach originally developed by Lastline (which VMware acquired).
This is a critical distinction from traditional sandboxes. Modern, evasive malware is often "sandbox-aware." It will check its environment to see if it is running inside a standard commercial hypervisor (like standard VMware ESXi, Hyper-V, or KVM). If the malware detects virtualization tools, specific drivers, or CPU flags associated with standard hypervisors, it will remain dormant to avoid detection.
Full System Emulation circumvents this by emulating the entire hardware stack-including the CPU, memory, and peripherals-in software. This means the malware cannot detect that it is being watched. Furthermore, because the emulator acts as the virtual CPU, it has visibility into every single instruction the malware attempts to execute and every memory location it attempts to access. This allows vDefend to detect malicious intent even if the malware uses zero-day exploits, highly obfuscated code, or fileless memory techniques.


NEW QUESTION # 55
Which of the following are valid logon detection methods for IDFW? (Select all that apply)

  • A. Single Sign On (SSO)
  • B. Guest Introspection
  • C. Identity Access Management
  • D. Event Log Scrapping

Answer: B,D

Explanation:
The VMware vDefend Identity Firewall (IDFW) allows administrators to create distributed firewall rules based on Active Directory user identities rather than just IP addresses. To do this, vDefend must accurately map a user's login to a specific VM's IP address. It achieves this mapping through two primary supported logon detection methods:
Guest Introspection: An agent-based method utilizing VMware Tools installed on the guest OS to detect logons locally.
Event Log Scraping: An agentless method where vDefend integrates directly with Active Directory to scrape security event logs and track authentication events across the network.


NEW QUESTION # 56
Which three benefits does micro-segmentation offer when implemented with vDefend for lateral protection?
(Choose three)
Response:

  • A. Enhances compliance by segmenting sensitive environments
  • B. Reduces unnecessary resource reservations for firewall appliances
  • C. Enables fine-grained control at the VM level
  • D. Limits lateral movement by enforcing workload isolation
  • E. Requires centralized inspection points

Answer: C,D,E


NEW QUESTION # 57
Distributed IDS cannot be implemented on which of the following?

  • A. NSX backed VLAN segment
  • B. Distributed portgroup
  • C. NSX backed Overlay Segment
  • D. Standard switch portgroup

Answer: D

Explanation:
VMware vDefend Distributed IDS/IPS performs deep packet inspection right at the virtual machine's network interface card (vNIC). To intercept this traffic at the hypervisor kernel level, it requires the advanced networking hooks and abstraction provided by modern virtual switches.
It fully supports workloads connected to modern NSX Overlay Segments, NSX VLAN Segments, and traditional vSphere Distributed Switches (vDS). However, legacy vSphere Standard Switches (vSS) lack the centralized management plane, distributed architecture, and necessary kernel APIs required to enforce NSX-based distributed security features. Therefore, you cannot implement Distributed IDS on a standard switch portgroup.


NEW QUESTION # 58
Which two sources of data are used by NSX for NTA/NDR analytics?
(Choose two)
Response:

  • A. vSAN replication logs
  • B. Flow telemetry from virtual switches
  • C. Distributed Resource Scheduler logs
  • D. BIOS-level hardware alerts
  • E. Threat intelligence feeds

Answer: B,E


NEW QUESTION # 59
Which of the following is NOT true in the context of Malware Prevention?

  • A. Static Analysis is good at catching the benign files and good at catching the obvious malicious files
  • B. All the files are sent to NSX advanced threat prevention service for dynamic analysis
  • C. Static Analysis determines if dynamic analysis is needed
  • D. Dynamic Analysis provides full visibility into subject behavior and system memory

Answer: B

Explanation:
Option C is the false statement. Sending every single file crossing the network to the cloud sandbox (dynamic analysis) would consume a massive amount of network bandwidth and severely impact performance. Instead, vDefend Malware Prevention uses a highly efficient pipeline: it first checks the file hash, then performs local Static Analysis to catch obvious malware and clear benign files. It is only when the local static analysis deems a file "suspicious" or "unknown" that it is forwarded to the Advanced Threat Prevention cloud service for deep, behavior-based Dynamic Analysis (sandboxing).


NEW QUESTION # 60
Which NSX component is responsible for correlating malware events and providing detailed threat visibility?
Response:

  • A. NSX Malware Prevention Engine
  • B. NSX Manager Security Dashboard
  • C. NSX Edge Gateway
  • D. vCenter Alarm Manager

Answer: B


NEW QUESTION # 61
Which two tools are used to troubleshoot connectivity and rule enforcement issues within a vDefend environment?
(Choose 2)
Response:

  • A. NSX Manager Packet Capture
  • B. Log Insight Collector
  • C. vSAN Disk Group Monitor
  • D. Traceflow
  • E. ESXi Configuration Assist

Answer: A,D


NEW QUESTION # 62
You need to control traffic between the different zones of your IT infrastructure (I.E. Production, Dev, and DMZ). How should you build the respective security tags to be able to easily refer to all of them in your orchestration tool?

  • A. Define each zone with the same tag, use a unique scope for each tag
  • B. Define each zone with a unique tag, use the same scope for all tags
  • C. Define each zone with a unique scope, use the same tag for all zones
  • D. Define each zone with a unique tag and a unique scope

Answer: B

Explanation:
In vDefend, tags are constructed using a key-value pair system comprised of a "Scope" (the category) and a "Tag" (the specific value). When automating security deployments via APIs or orchestration tools (like Aria Automation or Terraform), standardizing this structure is critical for dynamic grouping.
The best practice is to use the same scope (e.g., Scope = "Zone") and assign a unique tag for each environment (e.g., Tag = "Production", Tag = "Dev", Tag = "DMZ"). This allows an automation script to easily query the API by saying, "Show me all objects where the Scope is 'Zone'," instantly retrieving the VMs across all your different infrastructure environments for reporting or dynamic firewall grouping.


NEW QUESTION # 63
In the context of Network Traffic Analysis, VMs can be selectively excluded from monitoring for particular detectors.

  • A. True
  • B. False

Answer: A

Explanation:
This statement is True. In any production environment, certain legitimate administrative tools can mimic attacker behavior. For example, your internal security team's vulnerability scanner (like Nessus or Qualys) will constantly perform horizontal and vertical port scans across the network. If NTA monitored these scanners, it would trigger thousands of false-positive alerts. VMware vDefend allows administrators to selectively exclude specific VMs, IP addresses, or groups from specific NTA detectors, ensuring the AI engine only flags genuine anomalous threats and reducing alert fatigue for security operators.


NEW QUESTION # 64
What is the primary role of a Gateway Firewall in a private cloud architecture?
Response:

  • A. To monitor VM snapshot activity for security anomalies
  • B. To manage data deduplication and storage replication
  • C. To inspect and control north-south traffic entering or leaving the data center
  • D. To apply policies to virtual desktop environments

Answer: C


NEW QUESTION # 65
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