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Palo Alto Networks Network Security Analyst Sample Questions (Q101-Q106):

NEW QUESTION # 101
You are debugging a complex application issue where a server behind a Palo Alto Networks firewall is unable to establish outbound HTTPS connections to specific external APIs, despite a broad security policy allowing HTTPS. Packet captures on the firewall show SYN packets leaving the server's interface, but no SYN-ACKs are returned from the external API server. The firewall's session browser shows the session in a 'PREINIT state for an extended period before eventually aging out. There are no 'deny' logs for this traffic. Which of the following is the MOST ADVANCED troubleshooting step to determine where the packets are being dropped or what is delaying the session establishment?

A. Check the NAT policy configuration for this traffic to ensure the correct egress interface is selected and that source NAT is applied appropriately.
B. Perform a 'Packet Flow' analysis on the firewall (Monitor > Packet Flow) for a problematic session, tracing each stage: ingress, ingress processing, lookup, security policy, NAT, egress processing, and egress.
C. Use tcpdump on the firewall's ingress and egress interfaces for the specific server and API IP addresses to confirm packet forwarding.
D. Enable a debug flow on the firewall from the server's IP to the API IP, specifically looking for drop reasons using debug flow basic < source-ip> <destination- ip> and analyzing the output.
E. Utilize the 'Test Policy Match' tool in the GUI (Policies > Security > Policy Match) for the problematic source/destination/application to verify policy adherence.

Answer: B

Explanation:
The 'PREINIT' state combined with no SYN-ACK and no 'deny' logs is highly indicative of a packet getting stuck or dropped within the firewall's processing path, or the response packet not making it back. While A and B are valuable, the 'Packet Flow' tool (Option E) is a unique and advanced Palo Alto Networks feature that visually and logically traces a packet's journey through the firewall's internal processing stages . It shows if the packet successfully hits the ingress interface, passes through security policy lookups, NAT, route lookups, etc., and if it's eventually punted or dropped at any specific stage. This granular view is superior to basic debug flows or tcpdump for understanding why the firewall itself isn't completing the session establishment. Option C confirms policy match but not packet flow. Option D is important, but Packet Flow will reveal NAT issues if they are the cause.

NEW QUESTION # 102
A network architect is designing a new security posture for a hybrid cloud environment. They have Palo Alto Networks firewalls deployed on-premise and in AWS, Azure, and GCP. The requirement is to have a single pane of glass for security policy management, threat intelligence updates, and centralized logging that can scale with dynamic cloud workloads. Which combination of Palo Alto Networks products and services best fulfills these requirements?

A. Palo Alto Networks GlobaIProtect Cloud Service (GPCS) for all traffic, with no firewalls.
B. Individual firewall UIs for management, Splunk for logging, and manual threat intelligence updates.
C. VM-Series firewalls in each cloud, managed individually, forwarding logs to a central syslog server.
D. Cloud-managed Panorama, Strata Logging Service, and Advanced Threat Prevention (ATP) subscriptions.
E. Panorama (on-premise), local log collectors, and external threat feeds.

Answer: D

Explanation:
Cloud-managed Panorama provides the centralized policy management across diverse cloud and on-premise environments. Strata Logging Service offers scalable, cloud-native logging for all Palo Alto Networks devices, consolidating logs from various sources into a single data lake. Advanced Threat Prevention (ATP) subscriptions (e.g., WildFire, Threat Prevention, URL Filtering) deliver up-to-date threat intelligence and security capabilities. This combination provides a cohesive, scalable, and centrally managed security solution for a hybrid cloud.

NEW QUESTION # 103
A critical industrial control system (ICS) network, isolated from the internet, requires extremely low latency and high availability. While internal DoS attacks are rare, a misconfigured or rogue device could potentially flood the network. The security team wants to implement a DoS protection profile that proactively identifies and drops unusually high rates of UDP traffic targeting specific ICS application ports, without introducing any significant processing overhead or latency. Which configuration approach in Palo Alto Networks firewall DoS protection would best achieve this goal?

A. Apply an 'IP Address Block' profile to the ICS interface, monitoring for any source IP exceeding a 'Session Rate' of 100 sessions/second and blocking for 300 seconds.
B. Create a 'DoS Protection Policy' rule with 'Packet Based Attack Protection' for 'UDP Flood' and specify the target application ports, setting 'Action: Syn-Cookie' to mitigate.
C. Utilize 'Packet Based Attack Protection' within a 'DoS Protection Policy' rule, targeting 'UDP Flood' on specific destination ports, and configure a 'Per-Packet Rate' threshold with 'Action: Drop'.
D. Configure a 'Zone Protection' profile for the ICS zone with 'Flood Protection' enabled for 'UDP Flood', setting a 'Per-Packet Rate' threshold and 'Action: Drop'.
E. Implement a 'Data Filtering' profile to identify specific UDP payload patterns associated with ICS applications and block traffic not conforming to these patterns.

Answer: C

Explanation:
The requirement is to proactively identify and drop high rates of UDP traffic on specific application ports with low latency. 'Packet Based Attack Protection' within a 'DoS Protection Policy' is the most granular and efficient way to achieve this. By targeting 'UDP Flood' and specifying destination ports, the firewall can quickly identify and drop excessive UDP packets without the overhead of session tracking or SYN- cookie mechanisms (which are for TCP). Option A (Zone Protection) provides less granularity on specific ports. Option B incorrectly suggests 'Syn- Cookie' for UDP. Option C (IP Address Block) is reactive and might block legitimate devices due to misconfiguration. Option D (Data Filtering) is for content inspection, not volume-based DoS. Option E precisely matches the requirements for efficient, targeted UDP flood protection.

NEW QUESTION # 104
Consider the following XML snippet representing a partial SD-WAN template configuration in Panorama for a new branch template stack:

Which of the following statements accurately describe the implications or missing crucial components for this SD-WAN template to effectively manage application-specific traffic with performance objectives, specifically for a VoIP' application?

A. While 'High_Quality_Voice' defines performance thresholds, it does not explicitly define which links or paths are preferred for an application, only what constitutes 'high quality'.
B. The 'path-quality-profiles' are correctly defined, but 'Rule_1' is too generic. A new SD-WAN policy rule specifically for 'VoIP' is required, linked to the 'High_Quality_Voice' profile, and positioned at a higher priority.
C. The 'Rule_1' entry needs to be modified to specify 'application: VoIP' and its 'path-selection' changed to reference 'High_Quality_Voice' for performance-based routing.
D. The 'High_Quality_Voice' profile needs to be applied to specific interfaces or zones for it to take effect, which is not shown in this SD-WAN profile snippet.
E. The template is missing the definition of 'Path Monitoring' profiles, which are essential for the 'path-quality-profiles' to gather real-time link metrics.

Answer: A,B,E

Explanation:
Option B is correct because 'Rule_1' is a catch-all and needs a more specific rule for VoIP with a higher priority and linked to the performance profile. Option C is correct because 'Path Monitoring' profiles are fundamental; without them, the firewall cannot measure link quality (latency, jitter, loss) against the defined 'path-quality-profiles'. Option E is correct because 'path-quality-profiles' define what constitutes good quality, but the SD-WAN policy rule is what applies this definition to specific applications and dictates how paths are selected based on that quality (e.g., best quality, performance-based, etc.) and which links are considered. Option A is partially correct in that Rule_1 needs modification, but a new rule is generally preferred for specific applications like VoIP and its path selection should be 'performance-based' rather than just referencing the profile. Option D is incorrect; SD-WAN profiles are applied to interfaces (or zones) via a template or device group, but the 'path- quality-profiles' themselves are referenced within the SD-WAN policy rules, not directly applied to interfaces in this manner.

NEW QUESTION # 105
A managed security service provider (MSSP) uses Strata Cloud Manager (SCM) to deliver security services to multiple distinct customers. Each customer requires strict logical separation of their firewall configurations, policies, and logs within SCM, while the MSSP's central operations team needs a consolidated view of all customer environments without cross-customer data leakage. Which SCM design principles and features are paramount for achieving this multi-tenancy with secure isolation?

A. Leveraging SCM's Device Groups for logical separation, combined with granular Role-Based Access Control (RBAC) and explicit permissions per device group.
B. Implementing separate SCM instances for each customer to ensure physical isolation.
C. Utilizing a single SCM instance and relying solely on Application-ID for traffic segmentation.
D. Distributing management tasks to on-premise Panorama instances for each customer.
E. Configuring SD-WAN overlays to segment customer traffic at the network layer.

Answer: A

Explanation:
SCM is designed for multi-tenancy. For an MSSP, creating distinct 'Device Groups' for each customer allows for logical separation of their firewalls and configurations. Crucially, granular 'Role-Based Access Control (RBAC)' is then applied, granting specific MSSP users or customer-specific accounts permissions only to their respective device groups. This ensures that users can only access and manage their own customer's firewalls and data within the shared SCM instance, maintaining secure isolation while allowing the MSSP a consolidated (but permission-controlled) view. Separate SCM instances (Option B) are typically not necessary for logical separation and add significant overhead.

NEW QUESTION # 106
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