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Palo Alto Networks NetSec-Generalist 考試大綱:
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最受推薦的NetSec-Generalist考試指南,免費下載NetSec-Generalist考試資料幫助妳通過NetSec-Generalist考試
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最新的 Network Security Administrator NetSec-Generalist 免費考試真題 (Q46-Q51):
問題 #46
Which Cloud-Delivered Security Services (CDSS) solution is required to configure and enable Advanced DNS Security?
- A. Enterprise SaaS Security
- B. Advanced WildFire
- C. Advanced Threat Prevention
- D. Advanced URL Filtering
答案:D
問題 #47
Infrastructure performance issues and resource constraints have prompted a firewall administrator to monitor hardware NGFW resource statistics.
Which AlOps feature allows the administrator to review these statistics for each firewall in the environment?
- A. Host information profile (HIP)
- B. Capacity Analyzer
- C. Policy Analyzer
- D. Security Posture Insights
答案:B
問題 #48
A hospital system allows mobile medical imaging trailers to connect directly to the internal network of its various campuses. The network security team is concerned about this direct connection and wants to begin implementing a Zero Trust approach in the flat network.
Which solution provides cost-effective network segmentation and security enforcement in this scenario?
- A. Manually inspect large images like holograms and MRIs, but permit smaller images to pass freely through the campus core firewalls.
- B. Deploy edge firewalls at each campus entry point to monitor and control various traffic types through direct connection with the trailers.
- C. Configure access control lists on the campus core switches to control and inspect traffic based on image size, type, and frequency.
- D. Configure separate zones to isolate the imaging trailer's traffic and apply enforcement using the existing campus core firewalls.
答案:D
解題說明:
In a Zero Trust Architecture (ZTA), network segmentation is critical to prevent unauthorized lateral movement within a flat network. Since the hospital system allows mobile medical imaging trailers to connect directly to its internal network, this poses a significant security risk, as these trailers may introduce malware, vulnerabilities, or unauthorized access to sensitive medical data.
The most cost-effective and practical solution in this scenario is:
Creating separate security zones for the imaging trailers.
Applying access control and inspection policies via the hospital's existing core firewalls instead of deploying new hardware.
Implementing strict policy enforcement to ensure that only authorized communication occurs between the trailers and the hospital's network.
Why Separate Zones with Enforcement is the Best Solution?
Network Segmentation for Zero Trust
By placing the medical imaging trailers in their own firewall-enforced zone, they are isolated from the main hospital network.
This reduces attack surface and prevents an infected trailer from spreading malware to critical hospital systems.
Granular security policies ensure only necessary communications occur between zones.
Cost-Effective Approach
Uses existing core firewalls instead of deploying costly additional edge firewalls at every campus.
Reduces complexity by leveraging the current security infrastructure.
Visibility & Security Enforcement
The firewall enforces security policies, such as allowing only medical imaging protocols while blocking unauthorized traffic.
Integration with Threat Prevention and WildFire ensures that malicious files or traffic anomalies are detected.
Logging and monitoring via Panorama helps the security team track and respond to threats effectively.
Other Answer Choices Analysis
(A) Deploy edge firewalls at each campus entry point
This is an expensive approach, requiring multiple hardware firewalls at every hospital location.
While effective, it is not the most cost-efficient solution when existing core firewalls can enforce the necessary segmentation and policies.
(B) Manually inspect large images like holograms and MRIs
This does not align with Zero Trust principles.
Manual inspection is impractical, as it slows down medical workflows.
Threats do not depend on image size; malware can be embedded in small and large files alike.
(D) Configure access control lists (ACLs) on core switches
ACLs are limited in security enforcement, as they operate at Layer 3/4 and do not provide deep inspection (e.g., malware scanning, user authentication, or Zero Trust enforcement).
Firewalls offer application-layer visibility, which ACLs on switches cannot provide.
Switches do not log and analyze threats like firewalls do.
Reference and Justification:
Firewall Deployment - Firewall-enforced network segmentation is a key practice in Zero Trust.
Security Policies - Granular policies ensure medical imaging traffic is controlled and monitored.
VPN Configurations - If remote trailers are involved, secure VPN access can be enforced within the zones.
Threat Prevention & WildFire - Firewalls can scan imaging files (e.g., DICOM images) for malware.
Panorama - Centralized visibility into all traffic between hospital zones and trailers.
Zero Trust Architectures - This solution follows Zero Trust principles by segmenting untrusted devices and enforcing least privilege access.
Thus, Configuring separate zones (C) is the correct answer, as it provides cost-effective segmentation, Zero Trust enforcement, and security visibility using existing firewall infrastructure.
問題 #49
Which functionality does an NGFW use to determine whether new session setups are legitimate or illegitimate?
- A. SYN cookies
- B. SYN bit
- C. Random Early Detection (RED)
- D. SYN flood protection
答案:D
解題說明:
An NGFW (Next-Generation Firewall) determines whether new session setups are legitimate or illegitimate by using SYN flood protection, which is a key component of DoS/DDoS mitigation.
How SYN Flood Protection Works in an NGFW:
Detects High SYN Traffic Rates - SYN flood attacks occur when a large number of half-open TCP connections are created, overwhelming a server or firewall.
Implements SYN Cookies or Rate-Limiting - To mitigate attacks, the NGFW applies SYN cookies or connection rate limits to filter out illegitimate connection attempts.
Maintains a Secure State Table - The firewall tracks legitimate and suspicious SYN requests, ensuring only genuine connections are allowed through.
Protects Against TCP-Based Attacks - Prevents resource exhaustion caused by attackers flooding SYN packets without completing the TCP handshake.
Why Other Options Are Incorrect?
B . SYN bit ❌
Incorrect, because the SYN bit is just a flag in the TCP header used to initiate a connection-it does not help distinguish between legitimate and illegitimate sessions.
C . Random Early Detection (RED) ❌
Incorrect, because RED is used in congestion avoidance for queuing mechanisms, not for TCP session validation.
D . SYN cookies ❌
Incorrect, because SYN cookies are a method used within SYN flood protection, but they are just one part of the larger SYN flood protection mechanism implemented in NGFWs.
Reference to Firewall Deployment and Security Features:
Firewall Deployment - SYN flood protection is a core feature of Palo Alto NGFWs.
Security Policies - Helps enforce rate-limiting and SYN cookie mechanisms to prevent DoS attacks.
VPN Configurations - Prevents SYN flood attacks from affecting IPsec VPN gateways.
Threat Prevention - Works alongside intrusion prevention systems (IPS) to block TCP-based attacks.
WildFire Integration - Not directly related but ensures malware-infected bots don't launch SYN flood attacks.
Zero Trust Architectures - Protects trusted network zones by preventing unauthorized connection attempts.
Thus, the correct answer is:
✅ A. SYN flood protection
問題 #50
Which NGFW function can be used to enhance visibility, protect, block, and log the use of Post-quantum Cryptography (PQC)?
- A. Decryption profile
- B. DNS Security profile
- C. Decryption policy
- D. Security policy
答案:C
解題說明:
A Decryption policy enables the NGFW to enhance visibility into encrypted traffic, including traffic that may use post-quantum cryptography (PQC). By decrypting SSL/TLS traffic, the firewall can analyze, block, and log the use of PQC and other advanced cryptographic methods.
Decryption policies ensure that all encrypted communications are inspected for malicious content, preventing attackers from hiding threats within encrypted traffic. This process allows administrators to enforce security and compliance while also gaining better insights into network activities involving PQC.
Reference:
Palo Alto Networks Decryption Policy Overview
SSL Decryption Best Practices
問題 #51
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