6V0-21.25 VMware vDefend Security for VCF 5.x Administrator PDF Questions

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2. 1.A security administrator is deploying VMware Cloud Foundation (VCF) and wants to understand how VMware vDefend secures internal data center traffic. What is the primary architectural component of vDefend designed to inspect and control East-West (server-to-server) traffic? A. vDefend Gateway Firewall B. vDefend Security Intelligence C. vDefend Distributed Firewall (DFW) D. vDefend Network Detection and Response (NDR) Answer: C 2.A network administrator is reviewing the traffic flow for a new application deployment. The goal is to ensure all traffic *between* the application server (VM-App-01) and the database server (VM-DB-01) is inspected for security threats. Both VMs reside on the same ESXi host and the same logical segment. Which VMware vDefend component is responsible for enforcing firewall policies on this specific traffic path? A. The vDefend Gateway Firewall on the perimeter Edge node B. The vDefend Distributed Firewall, running in the hypervisor kernel C. The Security Services Platform (SSP) D. The NSX Manager appliance Answer: B 3.A junior security administrator is troubleshooting a new firewall policy. They have configured a rule in the vDefend Gateway Firewall (GFW) to block all SSH (TCP/22) traffic from a test VM (192.168.50.10) to a development server (192.168.50.20). Both VMs are on the same subnet and attached to the same L2 segment. The administrator observes that the SSH connection is still successful. Why is the vDefend Gateway Firewall rule not blocking this traffic? 2 / 7

3. A. The Gateway Firewall policy has not been published. B. The traffic is East-West, and the DFW default rule is "allow". C. The Gateway Firewall only inspects traffic destined for the internet. D. The test VM and development server are on a VLAN-backed segment. Answer: B 4.A cloud architect is designing a security solution for a multi-tenant VMware Cloud Foundation environment. A key requirement is to provide granular, application-aware security policies for workloads, including containerized applications. Another requirement is to inspect traffic for known vulnerability exploits *before* it reaches the workload, without causing network bottlenecks. Which vDefend components should the architect use to meet these specific requirements? (Choose 2.) A. vDefend Gateway Firewall B. vDefend Distributed Firewall C. Distributed IDS/IPS D. Network Sandboxing E. vDefend Security Intelligence Answer: B, C 5.A security administrator is troubleshooting why a vDefend Gateway Firewall (GFW) rule is not blocking traffic as expected. The traffic is confirmed to be routing through the correct Tier-1 Gateway where the GFW policy is applied. The administrator suspects the issue is related to rule order and policy categories. When the system evaluates a packet against the GFW, in which order are the rule categories processed? A. Emergency > Pre Rules > System > Gateway Specific > Default B. System > Emergency > Pre Rules > Gateway Specific > Default C. Emergency > System > Pre Rules > Gateway Specific > Default D. Pre Rules > Emergency > System > Default > Gateway Specific Answer: C 6.A security architect is designing a comprehensive security posture for a VMware Cloud Foundation (VCF) environment using vDefend. The design must address multiple threat vectors: 1. Prevent unauthorized lateral movement between applications. 2. Block known vulnerability exploits (e.g., Log4j) targeting internal servers. 3. Detect and block new or zero-day malware that may be downloaded from the internet. 4. Identify anomalous network behavior, such as a compromised host scanning the network. Which vDefend components are required to meet all these requirements? (Select all that apply.) A. vDefend Distributed Firewall B. vDefend Gateway Firewall C. Distributed IDS/IPS D. Network Sandboxing E. Network Traffic Analysis (NTA) Answer: A, C, D, E 7.What is the primary function of Network Traffic Analysis (NTA) within the VMware vDefend platform? 3 / 7

4. A. To block known malware signatures at the hypervisor level. B. To enforce user identity-based access control rules for applications. C. To create a baseline of normal network behavior and detect anomalous activity that may indicate a threat. D. To provide a centralized console for managing firewall policies across multiple VCF instances. Answer: C 8.A SOC analyst is reviewing alerts from VMware vDefend and notices an alert for a "Protocol Anomaly." Which of the following would be an example of this type of anomaly detected by NTA? A. A server suddenly sending a large volume of data to an external IP address. B. A user account attempting to log in from a new geographic location. C. The use of DNS for transferring data, also known as DNS tunneling. D. A known malware signature detected in a network packet. Answer: C 9.A security administrator is investigating an alert from the vDefend NTA/NDR system. The alert indicates that a web server (10.10.1.50) is exhibiting behavior consistent with "Lateral Movement." Based on this information, what is the most likely threat occurring? A. A denial-of-service (DoS) attack originating from the web server. B. An attacker, having compromised the web server, is attempting to discover and move to other servers. C. A misconfigured firewall rule is blocking legitimate RDP traffic. D. The web server is exfiltrating data to an external command-and-control server. Answer: B 4 / 7

5. 10.A SOC analyst is reviewing an NTA event in the VMware vDefend console. The system has correlated several low-level anomalies into a single high-priority campaign. The analyst needs to understand what this campaign represents in the context of the MITRE ATT&CK framework. According to the documentation, which two of the following MITRE ATT&CK tactics can vDefend NTA/NDR help to detect? (Choose 2.) A. Initial Access B. Command and Control C. Privilege Escalation D. Credential Access Answer: B, C, D 11.A security administrator is analyzing vDefend NTAreports and observes a significant anomaly.Aserver in the database segment, which normally only communicates with the application tier on specific SQL ports, has been observed sending a large volume of data using DNS queries to multiple, unknown external domains. Anomaly Report: - Event Type: Traffic Anomaly - Source: 10.50.30.10 (sql-prod-01) - Destination: Multiple (e.g., xf83j.baddomain.com, gv2a9.baddomain.com) - Protocol: DNS (Port 53) - Details: High volume of DNS requests to algorithmically generated domains. - Baseline: Host 10.50.30.10 typically sends < 1KB of DNS data per day. - Current: 150MB of DNS data sent in 1 hour. What type of threat does this NTA finding most likely indicate? A. A Distributed Denial of Service (DDoS) attack against the DNS server. B. A misconfigured DNS security profile on the distributed firewall. C. Data exfiltration using DNS tunneling. D. An IDS/IPS signature that needs to be updated. Answer: C 12.A cloud architect is designing a zero-trust security model for a new VCF environment. A key goal is to gain deep visibility into all East-West traffic flows to build an accurate micro-segmentation policy.After the policy is built, the architect also wants to detect any anomalous behavior that deviates from this established baseline, such as potential lateral movement. Which vDefend components should be deployed to meet all these requirements? (Select all that apply.) A. vDefend Security Intelligence B. vDefend Distributed Firewall C. Network Traffic Analysis (NTA) D. vDefend Gateway Firewall E. Distributed IDS/IPS Answer: A, B, C 13.A system administrator is creating a new dynamic group in NSX Manager to be used in a vDefend Distributed Firewall policy. The goal is to automatically include all virtual machines that have a VMware 5 / 7

6. tag of "PCI-DSS" applied to them, regardless of their network or name. Which 'Expression' should the administrator configure to create this group? A. `key`: "Name", `value`: "PCI-DSS" B. `key`: "Tag", `value`: "PCI-DSS" C. `key`: "OSName", `value`: "PCI-DSS" D. `key`: "IPAddress", `value`: "PCI-DSS" Answer: B 14.A system administrator is troubleshooting a new vDefend Distributed Firewall policy. A rule in the 'Application' category, "Block-SSH", is intended to block SSH (TCP/22) to the 'DB-Servers' group. However, administrators find they can still SSH to the database servers. Upon review, they find the following policy configuration: Category: Infrastructure Policy: P-Infra Rule: 1001 Source: jump-box-group Destination: ANY Service: SSH Action: Allow Applied To: DFW Category: Application Policy: P-App-DB Rule: 2001 Source: ANY Destination: DB-Servers Service: SSH Action: Drop Applied To: DB-Servers What is the most likely reason the "Block-SSH" rule (2001) is failing? A. The 'Applied To' field in rule 2001 should be set to "DFW". 6 / 7

7. B. The 'Infrastructure' category is processed before the 'Application' category. C. The 'Source' in rule 2001 should be 'jump-box-group', not 'ANY'. D. The 'P-App-DB' policy is stateful, and the TCP session is already established. Answer: B 15.A security administrator is responding to a newly discovered zero-day vulnerability. The administrator needs to immediately block all attempts to exploit this vulnerability across the entire data center, ensuring this new block rule is evaluated before any other existing firewall rules. Which of the following actions must the administrator take to create a vDefend Distributed Firewall policy that meets this requirement? (Select all that apply.) A. Place the new block rule in the 'Emergency' category. B. Set the 'Applied To' field of the rule to 'DFW'. C. Set the rule 'Action' to 'Reject'. D. Create a new 'Context Profile' for the zero-day threat. E. Place the new block rule in the 'Infrastructure' category. Answer: A, B 16.A network administrator is configuring firewall rules on a Tier-0 Gateway that has been configured in an Active/Active high availability mode. The administrator notes that some security features are not available for configuration. Which two vDefend Gateway Firewall features are not supported on an Active/Active Edge configuration as of vDefend 9.0? (Choose 2.) A. Stateful L3 rules B. NAT C. Gateway Firewall (itself) D. Distributed Firewall E. Identity Firewall Answer: C, E 17.An IT Operations team is tasked with automating the creation of 50 new firewall policies for different applications. They plan to use the NSX Policy API. To ensure the rules are created in the correct order within each policy, they must specify the `sequence_number` for each rule. What happens if they create a new rule via the API and do not specify a `sequence_number` in the payload? A. The API call will fail with a "Missing required field" error. B. The rule will be assigned a `sequence_number` of 0. C. The rule will automatically be placed at the bottom of the rule list in that policy. D. The NSX Manager will automatically assign the next available integer as the `sequence_number`. Answer: B 7 / 7