Download VMware vDefend Security for VCF 5.x Administrator.6V0-21.25.Actual4Test.2026-05-19.27q.vcex

Vendor: VMware
Exam Code: 6V0-21.25
Exam Name: VMware vDefend Security for VCF 5.x Administrator
Date: May 19, 2026
File Size: 115 KB
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Demo Questions

Question 1
Which three benefits can be achieved by implementing automation for vDefend security policies?
(Choose three)
Response:
  1. Simplifies snapshot management
  2. Enables version-controlled policy deployment
  3. Ensures faster incident response
  4. Supports policy-as-code practices
  5. Eliminates need for any rule updates
Correct answer: B, C, D
Question 2
How does Network Detection and Response (NDR) enhance security in VMware environments?
Response:
  1. By correlating traffic data with threat intelligence to detect and respond to threats
  2. By automatically resetting VM passwords
  3. By handling vSAN capacity alerts
  4. By providing file backup services
Correct answer: A
Question 3
Which two practices are recommended when designing lateral protection strategies for segmented workloads?
(Choose two)
Response:
  1. Define granular security policies per application tier
  2. Leverage security groups and dynamic membership
  3. Use DNS names in all firewall rules
  4. Disable DFW logging for compliance
  5. Allow all intra-cluster traffic for performance
Correct answer: A, B
Question 4
Which feature of the vDefend firewall architecture helps avoid hair-pinning of east-west traffic?
Response:
  1. Edge NAT configuration
  2. Centralized gateway-based firewalling
  3. Local rule enforcement at the hypervisor kernel level
  4. Traffic redirection to perimeter firewall
Correct answer: C
Question 5
Which two practices should be followed to ensure efficient rule processing in the vDefend firewall rulebase?
(Choose three)
Response:
  1. Disable all rule logging
  2. Keep all rules in a single large section
  3. Place frequently hit rules at the bottom
  4. Group rules with common sources into one section
  5. Place deny rules above allow rules when appropriate
Correct answer: D, E
Question 6
Which three best practices should be followed when planning application segmentation using vDefend Security Intelligence?
(Choose three)
Response:
  1. Disable logging to reduce overhead during planning phase
  2. Monitor workload behavior through Security Intelligence dashboards
  3. Observe east-west traffic for several days before applying policies
  4. Apply broad firewall policies immediately after initial scan
  5. Validate segmentation changes in a staging environment first
Correct answer: B, C, E
Question 7
Which three security features can be enforced using Gateway Firewall policies in NSX?
(Choose three)
Response:
  1. North-south traffic segmentation
  2. Cluster-level backup operations
  3. L2 switching between VMs
  4. NAT and VPN rule enforcement
  5. Stateful packet inspection
Correct answer: A, D, E
Question 8
Which two tools are used to troubleshoot connectivity and rule enforcement issues within a vDefend environment?
(Choose 2)
Response:
  1. NSX Manager Packet Capture
  2. ESXi Configuration Assist
  3. Log Insight Collector
  4. vSAN Disk Group Monitor
  5. Traceflow
Correct answer: A, E
Question 9
Which three potential misconfigurations should be checked when troubleshooting Distributed Firewall enforcement failures?
(Choose three)
Response:
  1. Service insertion or redirection failure
  2. Disabled logging on Tier-0 Gateway
  3. Rule precedence and ordering issues
  4. Incorrect security group membership
  5. Overlapping NSX VLAN transport zones
Correct answer: A, C, D
Question 10
Which three capabilities are available through NSX IDPS threat signature configuration?
(Choose three)
Response:
  1. Enable or disable specific attack signatures
  2. Apply threat profiles to specific workloads
  3. Customize threshold values for alert triggers
  4. Define signature-based segmentation policies
  5. Assign severity levels to IDS alerts
Correct answer: A, B, E
Question 11
Which statement best describes the vDefend firewall's distributed architecture?
Response:
  1. Security rules are applied only to north-south traffic from external clients
  2. Policies are enforced at the physical network core to minimize processing load
  3. It enables consistent policy enforcement by applying rules at each VM's vNIC level
  4. It relies on dedicated hardware firewalls to offload inspection tasks
Correct answer: C
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