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| Certification Vendor: | Palo Alto Networks |
|---|---|
| Exam Name: | Palo Alto Networks SD-WAN Engineer |
| Exam Number: | SD-WAN-Engineer |
| Exam Price: | $250 USD |
| Exam Duration: | 90 minutes |
| Related Certifications: | Palo Alto Networks Certified SASE Engineer Palo Alto Networks Certified Network Security Engineer |
| Exam Format: | Matching, Ordering, Multiple choice |
| Real Exam Qty: | 75โ85 |
| Certificate Validity Period: | 2 years |
| Available Languages: | English |
| Passing Score: | 860 (scale 300โ1000) |
| Recommended Training: | Prisma SD-WAN: Design and Operation Palo Alto Networks Digital Learning Path |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Palo Alto Networks SD-WAN-Engineer Sample Questions |
| Exam Way: | In-person only at Pearson VUE test centers (online proctoring discontinued May 1, 2025) |
| Pre Condition: | Recommended: 1โ2 years of experience with networking, WAN technologies, and Palo Alto Networks solutions; no mandatory prerequisite exams |
| Official Syllabus URL: | https://www.paloaltonetworks.com/services/education/palo-alto-networks-sd-wan-engineer |
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NEW QUESTION # 21
What is the number and structure of Prisma SD-WAN QoS queues supported per WAN interface?
Answer: B
Explanation:
Comprehensive and Detailed Explanation
The Prisma SD-WAN (ION) QoS engine utilizes a hierarchical queuing structure designed to provide granular control over application performance. Each WAN interface on an ION device supports a total of 16 QoS queues.
This 16-queue structure is derived from a matrix of 4 Classes (often referred to as Priority Classes) multiplied by 4 Application Criteria (Traffic Types).2
4 Priority Classes: The system defines four high-level business priority categories:3 Platinum (Highest priority)4 Gold Silver Bronze (Lowest priority/Best Effort)5
4 Application Criteria (Sub-queues): Within each of the four priority classes, the system further categorizes traffic into four specific application types to ensure proper handling (e.g., ensuring voice doesn't get stuck behind bulk data even within the same priority level):6 Real-Time Video Real-Time Audio Transactional Bulk7 Calculation: 4 Priority Classes ร 4 Application Types = 16 Total Queues per interface. This structure allows the scheduler to ensure that a "Platinum" voice call is prioritized over "Platinum" bulk data, and both are prioritized over "Gold" traffic.
NEW QUESTION # 22
Which statements accurately describes how the Prisma SD-WAN zone-based firewall functions within a branch network?
Answer: A
Explanation:
The Prisma SD-WAN (ION) device includes a native, application-aware Zone-Based Firewall (ZBFW) that provides comprehensive security within the branch without the mandatory requirement for additional hardware.2 The fundamental principle of this architecture is the grouping of interfaces and sub-interfaces into logical Security Zones.3 Once these zones are defined (e.g., LAN, WAN, Guest, IoT), the administrator can create security policies that govern the traffic permitted to flow between them.4 Unlike traditional routers that rely on stateless Access Control Lists (ACLs) which are difficult to manage and lack application visibility, the Prisma SD-WAN ZBFW is stateful and application-aware.5 This means it can apply granular control over North-South traffic (flows moving between the LAN and the WAN/Internet) and East-West traffic (flows moving between different segments within the LAN, such as from a Guest zone to a Corporate zone).6 By using security zones, an ION device can ensure that even if two local networks are connected to the same physical appliance, they remain completely isolated unless a specific policy explicitly allows communication.
This "Zero Trust" approach at the branch edge allows organizations to segment vulnerable devices (like IoT) from critical internal resources and strictly control how users access the internet or the corporate data center.7 The ZBFW works in tandem with the global controller to ensure that security postures are consistent across all branch locations, eliminating the complexity of manual ACL management at each site.8
NEW QUESTION # 23
There are periodic complaints about the poor performance of a real-time application.
What can be inferred about the performance issue, based on the Network Transfer Time (NTT) and Server Response Time (SRT) image below?
Answer: A
Explanation:
In Prisma SD-WAN, application performance is monitored through distinct metrics that separate network health from application health. The provided graph displays Network Transfer Time (NTT) in blue and Server Response Time (SRT) in orange. NTT measures the round-trip time of packets traversing the WAN fabric, while SRT measures the time elapsed from when the server receives a request to when it sends the first response packet.
Analysis of the telemetry data shows that the NTT (blue line) remains consistently low and stable, generally staying below 100 milliseconds throughout the capture period. This indicates that the SD-WAN path and underlying network circuits are not the source of the latency. Conversely, the SRT (orange line) exhibits significant and erratic spikes, reaching as high as 450 to 475 milliseconds. These spikes occur while the network latency (NTT) remains flat.
Because the latency increases are isolated to the SRT metric, the root cause is confirmed to be on the Application Server side. This pattern typically suggests that the server is struggling with resource exhaustion, high CPU utilization, or database query delays during peak processing times. For a real-time application, these SRT spikes translate directly to jitter and "lag" for the end-user. By distinguishing between these two metrics, Prisma SD-WAN allows network administrators to prove that the network is performing within SLA and shift the troubleshooting focus to the application or server management teams, significantly reducing mean time to innocence (MTTI).
NEW QUESTION # 24
An administrator is configuring an ION 2000 device for a deployment where high availability is required, but the site has only a single internet circuit. The administrator configures a Bypass Pair (Fail-to-Wire) on ports 1 and 2 connecting the ISP modem to the legacy firewall.
If the ION device loses power, what is the resulting behavior of the traffic flowing through this Bypass Pair?
Answer: B
Explanation:
Comprehensive and Detailed Explanation
The Bypass Pair feature on Prisma SD-WAN ION devices (specifically supported models like ION 2000,
3000, 7000, 9000) is a hardware-based resiliency mechanism known as Fail-to-Wire.
* Operation: A "Bypass Pair" logically groups two physical interfaces (e.g., WAN 1 and LAN 1). Under normal operation, the ION processes traffic between them.
* Power Loss: In the event of a total power loss (or critical software failure), a mechanical relay inside the device physically closes the circuit between the two ports.
* Result: This creates a direct electrical connection (like a patch cable) between the upstream device (ISP Modem) and the downstream device (Legacy Firewall or Router). This ensures that internet connectivity is preserved for the site, even if the SD-WAN appliance is completely dead. This is critical for single-point-of-failure deployments where maintaining basic dial-tone is more important than SD- WAN optimization during a hardware outage.
NEW QUESTION # 25
Which metrics can be monitored at the individual Prisma SD-WAN ION device level to assess its health and operational performance?
Answer: C
Explanation:
To ensure the stability and performance of the SD-WAN fabric, Prisma SD-WAN provides granular visibility into the health of each Instant-On Network (ION) appliance. While the solution is primarily application- defined, monitoring the underlying physical and system resources of the hardware or virtual instance is critical for proactive maintenance and troubleshooting.
At the individual device level, administrators can monitor system resource utilization, which includes CPU usage, memory (RAM) consumption, and disk space availability.1 High CPU or memory usage can indicate that the device is reaching its throughput limits or that a specific process (such as deep packet inspection) is overtaxing the system. Disk utilization is monitored to ensure there is sufficient space for local logs and system operations.
Beyond internal system health, interface-level metrics are essential. This includes monitoring interface bandwidth utilization to identify bottlenecks on WAN or LAN ports. Crucially, operational performance is also assessed through error and discard counters on each interface. High error rates or frequent packet discards often signal physical layer issues (like bad cabling), duplex mismatches, or upstream provider congestion. While VPN status and application flows are vital for network-wide visibility, the core health of an ION device is defined by these foundational system and interface metrics.
Monitoring these specific parameters allows network engineers to distinguish between an application performance issue caused by network latency and one caused by a local hardware resource constraint.
NEW QUESTION # 26
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