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Palo Alto Networks Systems Engineer Professional - Hardware Firewall 認定 PSE-Strata-Pro-24 試験問題 (Q38-Q43):
質問 # 38
While responding to a customer RFP, a systems engineer (SE) is presented the question, "How do PANW firewalls enable the mapping of transactions as part of Zero Trust principles?" Which two narratives can the SE use to respond to the question? (Choose two.)
正解:A、D
解説:
The question asks how Palo Alto Networks (PANW) Strata Hardware Firewalls enable the mapping of transactions as part of Zero Trust principles, requiring a systems engineer (SE) to provide two narratives for a customer RFP response. Zero Trust is a security model that assumes no trust by default, requiring continuous verification of all transactions, users, and devices-inside and outside the network. The Palo Alto Networks Next-Generation Firewall (NGFW), part of the Strata portfolio, supports this through its advanced visibility, decryption, and policy enforcement capabilities. Below is a detailed explanation of why options B and D are the correct narratives, verified against official Palo Alto Networks documentation.
Step 1: Understanding Zero Trust and Transaction Mapping in PAN-OS
Zero Trust principles, as defined by frameworks like NIST SP 800-207, emphasize identifying and verifying every transaction (e.g., network flows, application requests) based on context such as user identity, application, and data. For Palo Alto Networks NGFWs, "mapping of transactions" refers to the ability to identify, classify, and control network traffic with granular detail, enabling verification and enforcement aligned with Zero Trust.
The PAN-OS operating system achieves this through:
* App-ID: Identifies applications regardless of port or protocol.
* User-ID: Maps IP addresses to user identities.
* Content-ID: Inspects and protects content, including decryption for visibility.
* Security Policies: Enforces rules based on these mappings.
Reference: Palo Alto Networks Zero Trust Architecture Guide
"Zero Trust requires visibility into all traffic, verification of trust, and enforcement of least privilege policies- capabilities delivered by PAN-OS through App-ID, User-ID, and Content-ID." Step 2: Evaluating the Narratives Let's analyze each option to determine which two best explain how PANW firewalls enable transaction mapping for Zero Trust:
Option A: Emphasize Zero Trust as an ideology, and that the customer decides how to align to Zero Trust principles.
Analysis: While Zero Trust is indeed a guiding philosophy, this narrative is vague and does not directly address how the firewall enables transaction mapping. It shifts responsibility to the customer without highlighting specific PAN-OS capabilities, making it less relevant to the question.
Conclusion: Not a suitable answer.
Reference: Palo Alto Networks Zero Trust Overview - "Zero Trust is a strategy, but Palo Alto Networks provides the tools to implement it." Option B: Reinforce the importance of decryption and security protections to verify traffic that is not malicious.
Analysis: Decryption is a cornerstone of Zero Trust because encrypted traffic (e.g., TLS/SSL) can hide malicious activity. PAN-OS NGFWs use SSL Forward Proxy and SSL Inbound Inspection to decrypt traffic, allowing full visibility into transactions. Once decrypted, App-ID and Content-ID classify the traffic and apply security protections (e.g., threat prevention, URL filtering) to verify it aligns with policy and is not malicious. This directly enables transaction mapping by ensuring all flows are identified and verified.
Step-by-Step Explanation:
Enable decryption under Policies > Decryption to inspect encrypted traffic.
App-ID identifies the application (e.g., HTTPS-based apps).
Content-ID scans for threats, ensuring the transaction is safe.
Logs (e.g., Traffic, Threat) map the transaction details (source, destination, app, user).
Conclusion: Correct answer-directly ties to transaction mapping via visibility and verification.
Reference: PAN-OS Administrator's Guide (11.1) - Decryption Overview
"Decryption enables visibility into encrypted traffic, a requirement for Zero Trust, allowing the firewall to apply security policies and log transaction details." Option C: Explain how the NGFW can be placed in the network so it has visibility into every traffic flow.
Analysis: Network placement (e.g., inline deployment) is important for visibility, but it's a deployment strategy, not a capability of the firewall itself. While visibility is a prerequisite for Zero Trust, this narrative does not explain how the firewall maps transactions (e.g., via App-ID or User-ID). It's too indirect to fully address the question.
Conclusion: Not the strongest answer.
Reference: PAN-OS Deployment Guide - "Inline placement ensures visibility, but mapping requires App-ID and User-ID." Option D: Describe how Palo Alto Networks NGFW Security policies are built by using users, applications, and data objects.
Analysis: This narrative highlights the core PAN-OS features-User-ID, App-ID, and Content-ID-that enable transaction mapping. Security policies in PAN-OS are defined using:
Users: Mapped via User-ID from directory services (e.g., AD).
Applications: Identified by App-ID, even within encrypted flows.
Data Objects: Controlled via Content-ID (e.g., file types, sensitive data).These policies log and enforce transactions, providing the granular context required for Zero Trust (e.g., "Allow user Alice to access Salesforce, but block file uploads").
Step-by-Step Explanation:
Configure User-ID (Device > User Identification) to map IPs to users.
Use App-ID in policies (Policies > Security) to identify apps.
Define data objects (e.g., Objects > Custom Objects > Data Patterns) for content control.
Logs (e.g., Monitor > Logs > Traffic) record transaction mappings.
Conclusion: Correct answer-directly explains transaction mapping via policy enforcement.
Reference: PAN-OS Administrator's Guide (11.1) - Security Policy
"Security policies leverage User-ID, App-ID, and Content-ID to map and control transactions, aligning with Zero Trust least privilege." Step 3: Why B and D Are the Best Choices B: Focuses on decryption and verification, ensuring all transactions (even encrypted ones) are mapped and validated, a critical Zero Trust requirement.
D: Highlights the policy framework that maps transactions to users, apps, and data, enabling granular control and logging-core to Zero Trust enforcement.Together, they cover visibility (B) and enforcement (D), fully addressing how PANW firewalls implement transaction mapping for Zero Trust.
Step 4: Sample RFP Response Narratives
B Narrative: "Palo Alto Networks NGFWs enable Zero Trust by decrypting traffic to provide full visibility into transactions. Using SSL decryption and integrated security protections like threat prevention, the firewall verifies that traffic is not malicious, mapping every flow to ensure compliance with Zero Trust principles." D Narrative: "Our NGFWs map transactions through security policies built on users, applications, and data objects. By leveraging User-ID, App-ID, and Content-ID, the firewall identifies who is accessing what application and what data is involved, enforcing least privilege and logging every transaction for Zero Trust alignment." Conclusion The two narratives that best explain how PANW Strata Hardware Firewalls enable transaction mapping for Zero Trust are B and D. These are grounded in PAN-OS capabilities-decryption for visibility and policy- based mapping-verified by Palo Alto Networks documentation up to March 08, 2025, including PAN-OS
11.1 and the Zero Trust Architecture Guide.
質問 # 39
An existing customer wants to expand their online business into physical stores for the first time. The customer requires NGFWs at the physical store to handle SD-WAN, security, and data protection needs, while also mandating a vendor-validated deployment method. Which two steps are valid actions for a systems engineer to take? (Choose two.)
正解:A、B
解説:
When an existing customer expands their online business into physical stores and requires Next-Generation Firewalls (NGFWs) at those locations to handle SD-WAN, security, and data protection-while mandating a vendor-validated deployment method-a systems engineer must leverage Palo Alto Networks' Strata Hardware Firewall capabilities and validated deployment strategies. The Strata portfolio, particularly the PA- Series NGFWs, is designed to secure branch offices with integrated SD-WAN and robust security features.
Below is a detailed explanation of why options A and D are the correct actions, grounded in Palo Alto Networks' documentation and practices as of March 08, 2025.
Step 1: Recommend Professional Services (Option A)
The customer's requirement for a "vendor-validated deployment method" implies a need for expertise and assurance that the solution meets their specific needs-SD-WAN, security, and data protection-across new physical stores. Palo Alto Networks offers professional services, either directly or through certified partners, to ensure proper deployment of Strata Hardware Firewalls like the PA-400 Series or PA-1400 Series, which are ideal for branch deployments. These services provide end-to-end support, from planning to implementation, aligning with the customer's mandate for a validated approach.
* Professional Services Scope: Palo Alto Networks' professional services include architecture design, deployment, and optimization for NGFWs and SD-WAN. This ensures that the PA-Series firewalls are configured to handle SD-WAN (e.g., dynamic path selection), security (e.g., Threat Prevention with ML-powered inspection), and data protection (e.g., WildFire for malware analysis and Data Loss Prevention integration).
* Vendor Validation: By recommending these services, the engineer ensures a deployment that adheres to Palo Alto Networks' best practices, meeting the customer's requirement for a vendor-validated method. This is particularly critical for a customer new to physical store deployments, as it mitigates risks and accelerates time-to-value.
* Strata Hardware Relevance: The PA-410, for example, is a desktop NGFW designed for small branch offices, offering SD-WAN and Zero Trust security out of the box. Professional services ensure its correct integration into the customer's ecosystem.
Reference:
"Palo Alto Networks Professional Services" documentation states, "Our experts help you design, deploy, and optimize your security architecture," covering NGFWs and SD-WAN for branch deployments.
"PA-400 Series" datasheet highlights its suitability for branch offices with "integrated SD-WAN functionality" and "advanced threat prevention," validated through professional deployment support.
Why Option A is Correct:Recommending professional services meets the customer's need for a vendor- validated deployment, leveraging Palo Alto Networks' expertise to tailor Strata NGFWs to the physical store requirements.
Step 2: Use the Reference Architecture Guide (Option D)
Explanation:Palo Alto Networks provides reference architectures, such as the "On-Premises Network Security for the Branch Deployment Guide," to offer vendor-validated blueprints for deploying Strata Hardware Firewalls in branch environments. This guide is specifically designed for scenarios like the customer's-expanding into physical stores-where SD-WAN, security, and data protection are critical.
Using this reference architecture ensures a consistent, proven deployment method that aligns with the customer's mandate.
Reference Architecture Details: The "On-Premises Network Security for the Branch Deployment Guide" outlines how to deploy PA-Series NGFWs with SD-WAN to secure branch offices. It includes configurations for secure connectivity (e.g., VPNs, SD-WAN hubs), threat prevention (e.g., App-ID, URL Filtering), and data protection (e.g., file blocking policies).
SD-WAN Integration: The guide leverages the PA-Series' native SD-WAN capabilities, such as dynamic path selection and application-based traffic steering, to optimize connectivity between stores and the existing online infrastructure.
Vendor Validation: As a Palo Alto Networks-authored document, this guide is inherently vendor-validated, providing step-by-step instructions and best practices that the engineer can adapt to the customer's store footprint.
Strata Hardware Relevance: The guide recommends models like the PA-1400 Series for larger branches or the PA-410 for smaller stores, ensuring scalability and consistency across deployments.
Reference:
"On-Premises Network Security for the Branch Deployment Guide" (Palo Alto Networks) details "branch office deployment with SD-WAN and NGFW capabilities," validated for Strata hardware like the PA-Series.
"SD-WAN Reference Architecture" complements this, emphasizing the PA-Series' role in "simplified branch deployments with integrated security." Why Option D is Correct:Using the reference architecture provides a vendor-validated, repeatable framework that directly addresses the customer's needs for SD-WAN, security, and data protection, ensuring a successful expansion into physical stores.
Why Other Options Are Incorrect
Option B: Use Golden Images and Day 1 configuration to create a consistent baseline from which the customer can efficiently work.
Analysis: While Golden Images and Day 1 configurations (e.g., via Panorama or Zero Touch Provisioning) are valuable for consistency and automation, they are not explicitly vendor-validated deployment methods in the context of Palo Alto Networks' documentation. These are tools for execution, not strategic actions for planning a deployment. Additionally, they assume prior planning, which isn't addressed here, making this less aligned with the customer's stated requirements.
Reference: "Panorama Administrator's Guide" mentions Golden Images for configuration consistency, but it' s a technical implementation step, not a vendor-validated planning action.
Option C: Create a bespoke deployment plan with the customer that reviews their cloud architecture, store footprint, and security requirements.
Analysis: Creating a bespoke plan is a reasonable approach but does not inherently meet the "vendor- validated" mandate unless it leverages Palo Alto Networks' official tools (e.g., reference architectures or professional services). The question emphasizes a vendor-validated method, and a custom plan risks deviating from established, proven guidelines unless explicitly tied to such resources.
Reference: No specific Palo Alto Networks documentation mandates bespoke plans as a vendor-validated approach; instead, it prioritizes reference architectures and professional services.
Conclusion
Options A and D are the most valid actions for a systems engineer addressing the customer's expansion into physical stores with Strata Hardware Firewalls. Recommending professional services (A) ensures expert-led, vendor-validated deployment, while using the "On-Premises Network Security for the Branch Deployment Guide" (D) provides a proven blueprint tailored to SD-WAN, security, and data protection needs. Together, these steps leverage the PA-Series' capabilities to deliver a secure, scalable solution for the customer's new physical infrastructure.
質問 # 40
Which two statements clarify the functionality and purchase options for Palo Alto Networks AIOps for NGFW? (Choose two.)
正解:C、D
解説:
Palo Alto Networks AIOps for NGFW is a cloud-delivered service that leverages telemetry data and machine learning (ML) to provide proactive operational insights, best practice recommendations, and issue prevention.
* Why "It is offered in two license tiers: a free version and a premium version" (Correct Answer B)?AIOps for NGFW is available in two tiers:
* Free Tier:Provides basic operational insights and best practices at no additional cost.
* Premium Tier:Offers advanced capabilities, such as AI-driven forecasts, proactive issue prevention, and enhanced ML-based recommendations.
* Why "It uses telemetry data to forecast, preempt, or identify issues, and it uses machine learning (ML) to adjust and enhance the process" (Correct Answer C)?AIOps uses telemetry data from NGFWs to analyze operational trends, forecast potential problems, and recommend solutions before issues arise. ML continuously refines these insights by learning from real-world data, enhancing accuracy and effectiveness over time.
* Why not "It is offered in two license tiers: a commercial edition and an enterprise edition" (Option A)?This is incorrect because the licensing model for AIOps is based on "free" and "premium" tiers, not "commercial" and "enterprise" editions.
* Why not "It forwards log data to Advanced WildFire to anticipate, prevent, or identify issues, and it uses machine learning (ML) to refine and adapt to the process" (Option D)?AIOps does not rely on Advanced WildFire for its operation. Instead, it uses telemetry data directly from the NGFWs to perform operational and security analysis.
質問 # 41
A customer sees unusually high DNS traffic to an unfamiliar IP address. Which Palo Alto Networks Cloud-Delivered Security Services (CDSS) subscription should be enabled to further inspect this traffic?
正解:D
解説:
The appropriate CDSS subscription to inspect and mitigate suspicious DNS traffic is Advanced DNS Security
. Here's why:
* Advanced DNS Security protects against DNS-based threats, including domain generation algorithms (DGA), DNS tunneling (often used for data exfiltration), and malicious domains used in attacks. It leverages machine learning to detect and block DNS traffic associated with command-and-control servers or other malicious activities. In this case, unusually high DNS traffic to an unfamiliar IP address is likely indicative of a DNS-based attack or malware activity, making this the most suitable service.
* Option A: Advanced Threat Prevention (ATP) focuses on identifying and blocking sophisticated threats in network traffic, such as exploits and evasive malware. While it complements DNS Security, it does not specialize in analyzing DNS-specific traffic patterns.
* Option B: Advanced WildFire focuses on detecting and preventing file-based threats, such as malware delivered via email attachments or web downloads. It does not provide specific protection for DNS- related anomalies.
* Option C: Advanced URL Filtering is designed to prevent access to malicious or inappropriate websites based on their URLs. While DNS may be indirectly involved in resolving malicious websites, this service does not directly inspect DNS traffic patterns for threats.
* Option D (Correct): Advanced DNS Security specifically addresses DNS-based threats. By enabling this service, the customer can detect and block DNS queries to malicious domains and investigate anomalous DNS behavior like the high traffic observed in this scenario.
How to Enable Advanced DNS Security:
* Ensure the firewall has a valid Advanced DNS Security license.
* Navigate to Objects > Security Profiles > Anti-Spyware.
* Enable DNS Security under the "DNS Signatures" section.
* Apply the Anti-Spyware profile to the relevant Security Policy to enforce DNS Security.
References:
Palo Alto Networks Advanced DNS Security Overview: https://www.paloaltonetworks.com/dns-security Best Practices for DNS Security Configuration.
質問 # 42
In addition to Advanced DNS Security, which three Cloud-Delivered Security Services (CDSS) subscriptions utilize inline machine learning (ML)? (Choose three)
正解:A、B、D
解説:
To secure and protect your traffic using CDSS, Cloud NGFW for AWS provides Palo Alto Networks protections such as:
* App-ID. Based on patented Layer 7 traffic classification technology, the App-ID service allows you to see the applications on your network, learn how they work, observe their behavioral characteristics, and understand their relative risk. Cloud NGFW for AWS identifies applications and application functions via multiple techniques, including application signatures, decryption, protocol decoding, and heuristics.
These capabilities determine the exact identity of applications traversing your network, including those attempting to evade detection by masquerading as legitimate traffic by hopping ports or using encryption.
* Threat Prevention. The Palo Alto Networks Threat Prevention service protects your network by providing multiple layers of prevention to confront each phase of an attack. In addition to essential intrusion prevention service (IPS) capabilities, Threat Prevention possesses the unique ability to detect and block threats on any ports-rather than simply invoking signatures based on a limited set of predefined ports.
* Advanced URL Filtering. This critical service built into Cloud NGFW for AWS stops unknown web- based attacks in real-time to prevent patient zero with the industry's only ML-powered Advanced URL Filtering. Advanced URL Filtering combines the renowned Palo Alto Networks malicious URL database with the industry's first real-time web protection engine so organizations can automatically and instantly detect and prevent new malicious and targeted web-based threats.
* DNS. DNS Security gives you real-time protection, applying industry-first protections to disrupt attacks that use DNS. Tight integration with a Palo Alto Networks Next-Generation Firewall (NGFW) gives you automated protections, prevents attackers from bypassing security measures, and eliminates the need for independent tools or changes to DNS routing. DNS Security gives your organization a critical new control point to stop attacks.
* WildFire. Palo Alto Networks Advanced WildFire is the industry's largest cloud-based malware prevention engine that protects organizations from highly evasive threats using patented machine learning detection engines, enabling automated protections across network, cloud, and endpoints.
Advanced WildFire analyzes every unknown file for malicious intent and then distributes prevention in record time-60 times faster than the nearest competitor-to reduce the risk of patient zero.
https://docs.paloaltonetworks.com/cloud-ngfw-aws/administration/protect/cloud-delivered-security-services
質問 # 43
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