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| Certification Vendor: | Palo Alto Networks |
|---|---|
| Exam Name: | Palo Alto Networks Certified SD-WAN Engineer |
| Exam Number: | SD-WAN-Engineer |
| Exam Format: | Scenario-based, Multiple choice |
| Related Certifications: | Security Service Edge (SSE) Engineer Network Security Professional |
| Available Languages: | English |
| Certificate Validity Period: | 2 years |
| Exam Duration: | 90 minutes |
| Sample Questions: | Palo Alto Networks SD-WAN-Engineer Sample Questions |
| Exam Way: | Online (Proctored) or Pearson VUE Test Center |
| Pre Condition: | Recommended: Network Security Professional certification or equivalent experience. |
| Official Syllabus URL: | https://www.paloaltonetworks.com/services/education/sd-wan-engineer |
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NEW QUESTION # 84
Based on the HA topology image below, which two statements describe the end-state when power is removed from the ION 1200-S labeled "Active", assuming that the ION labeled "Standby" becomes the active ION?
(Choose two.)
Answer: B,D
Explanation:
Comprehensive and Detailed Explanation
This scenario depicts a High Availability (HA) topology utilizing the ION 1200-S model's Fail-to-Wire (bypass) capabilities to share WAN links between two devices without needing external switches for every WAN connection.
1. WAN Link Availability (Statement A):
The diagram illustrates a "daisy-chain" cabling method supported by the ION 1200-S bypass pairs.
* ISP A (Green): Connects directly to the "Standby" (Left) unit first. Since the Standby unit remains powered on, it maintains direct access to ISP A.
* LTE/5G (Blue): Connects to the "Active" (Right) unit first. The connection then loops through a bypass pair on the Active unit to the Standby unit. When power is removed from the "Active" unit, the fail-to-wire relays on its Ethernet ports close physically. This creates a passive electrical bridge that connects the LTE modem directly to the Standby unit. The Standby unit (now becoming Active) will detect the link state change and successfully utilize the LTE connection. Therefore, both WAN links remain usable.
2. LAN Failover Mechanism (Statement C):
Prisma SD-WAN ION devices typically use a VRRP-like mechanism for LAN redundancy.
* When the "Active" node fails (loses power), the "Standby" node stops receiving keepalives and promotes itself to the Active state.
* To ensure downstream switches and clients immediately send traffic to the new Active unit, it must update their ARP tables. It does this by broadcasting a Gratuitous ARP (GARP) packet for the Virtual IP (VIP) address of the Switch Virtual Interfaces (SVIs). This action informs the network that the MAC address associated with the Gateway I1P is now reachable via the port connected to the new Active ION.234
NEW QUESTION # 85
Site templates are to be used for the large-scale deployment of 100 Prisma SD-WAN branch sites across different regions.
Which two statements align with the capabilities and best practices for Prisma SD-WAN site templates? (Choose two.)
Answer: C,D
Explanation:
Comprehensive and Detailed Explanation
Site Templates (often referred to as Site Configuration Templates) are a critical tool for the Zero Touch Provisioning (ZTP) of large-scale deployments in Prisma SD-WAN.
1. Device Pre-staging (Statement C):
One of the primary capabilities of Site Templates is the creation of Device Shells. A device shell is a configuration container that exists in the controller before the physical hardware is installed or connected. By using a template, an administrator can pre-provision the entire configuration (interfaces, routing, subnets) for the "Site" and "Element" (Device). When the physical ION device is later connected to the internet and claimed (associated with the shell via its Serial Number), it immediately inherits this pre-staged configuration, enabling a true "plug-and-play" deployment.
2. Mandatory Variables (Statement B):
To successfully instantiate a functional site from a generic template, specific unique identifiers are required in the variable data set (typically a CSV file).
Site Name: Identifies the location in the portal.
ION Software Version: Ensures the device boots to the specific validated code version required for the deployment, preventing inconsistencies.
ION Serial Number / Device Name: Required to bind the logical configuration (Shell) to the physical hardware. Even if the serial is added later during the claim process, the structure of the template and the deployment workflow mandates these variables to ensure the device can be uniquely identified and managed within the fabric.
Note on Option D: While it is technically possible to re-deploy a template, the Best Practice for "Day 2" operations (updating or modifying configuration after deployment) is to use Prisma SD-WAN Stacks (Network Stacks, Security Stacks, etc.). Stacks allow for granular, policy-based updates across multiple sites without the destructive or rigid nature of re-applying a full site initialization template. Therefore, D is not the aligned best practice.
NEW QUESTION # 86
A network engineer is troubleshooting a user complaint regarding "slow application performance" for an internal web application. While viewing the Flow Browser in the Prisma SD-WAN portal, the engineer notices that the Server Response Time (SRT) is consistently high (over 500ms), while the Network Transfer Time (NTT) and Round Trip Time (RTT) are low (under 50ms).
What does this data indicate about the root cause of the issue?
Answer: C
Explanation:
Comprehensive and Detailed Explanation
The Flow Browser and App Response Time metrics in Prisma SD-WAN are critical tools for isolating the fault domain-determining whether a problem lies in the "Network" or the "Application."
* Network Transfer Time (NTT) / Round Trip Time (RTT): These metrics measure the time it takes for packets to traverse the network (WAN/LAN) and for acknowledgments to return. A low NTT (e.g.,
<50ms) confirms that the network pipes (SD-WAN overlay, Underlay circuits) are healthy and transporting packets quickly.
* Server Response Time (SRT): This metric specifically measures the time between the server receiving a request and the server sending the first byte of the response. It essentially measures the "processing time" of the backend server.
In the scenario described, the network metrics (NTT/RTT) are excellent, effectively ruling out WAN congestion, packet loss, or latency (Option A and C). However, the Server Response Time (SRT) is very high (500ms). This signature is a definitive indicator that the network delivered the request instantly, but the application server took a long time to process it. This points the troubleshooting effort toward the server infrastructure (e.g., a slow SQL query, an overloaded web server, or lack of compute resources) rather than the SD-WAN environment.
NEW QUESTION # 87
When deploying a branch gateway, secure fabric VPN tunnels are automatically established between which two site types? (Choose two.)
Answer: A,D
Explanation:
In the Prisma SD-WAN (Instant-On Network) architecture, the "Secure Fabric" is a key feature that simplifies VPN orchestration through automation. When an ION device is deployed at a site and associated with a specific role, the Prisma SD-WAN Controller automatically manages the establishment of encrypted VPN tunnels without requiring manual IPsec configuration.
The most fundamental tunnel type is Branch gateway to data center (Option B). By default, the system follows a hub-and-spoke model where every branch ION device automatically attempts to build secure tunnels to all available Data Center clusters within its domain. This ensures that branch locations have immediate, redundant connectivity to centralized corporate resources and applications as soon as they are brought online.
Additionally, Prisma SD-WAN supports automated Branch gateway to branch gateway connectivity (Option C). Unlike traditional architectures that backhaul all traffic through a central hub, the Prisma SD- WAN fabric can dynamically establish "spoke-to-spoke" tunnels between branch gateways to facilitate direct communication. This is particularly useful for latency-sensitive applications like Voice over IP (VoIP) or video conferencing. While this can be configured as a "full mesh" where all sites build tunnels to all other sites, the controller intelligently manages these connections based on the defined site roles and domain configurations to optimize resource usage and performance. Options A and D are incorrect because the fabric orchestration logic is primarily focused on the functional roles of the gateways (Branch vs. Data Center) rather than "domains" in the context of tunnel initiation.
NEW QUESTION # 88
Which component of Prisma SD-WAN is responsible for distributing User-IP and user-group mappings to branch devices that match the corresponding source IPs?
Answer: A
Explanation:
In the Prisma SD-WAN architecture, the Controller serves as the centralized management and control plane for the entire fabric. While the Cloud Identity Engine (CIE) is the component responsible for collecting and consolidating user-to-IP mappings from various identity providers (such as Active Directory, Okta, or Azure AD), it does not directly manage the distribution of this operational data to the individual ION devices at the branch level.
Instead, the Prisma SD-WAN Controller integrates with the Cloud Identity Engine to ingest these identity mappings. Once the Controller has synchronized the User-IP and user-group information, it acts as the primary orchestrator. It is responsible for distributing these mappings down to the ION devices across all sites. This distribution ensures that when an ION device sees traffic from a specific source IP, it can accurately associate that traffic with a specific user or group based on the metadata provided by the Controller.
By centralizing this distribution through the Controller, Prisma SD-WAN ensures consistency across the network. Branch ION devices can then apply Application-Based Path Selection and security policies based on user identity rather than just IP addresses. This architectural design offloads the processing requirements of maintaining direct connections to identity providers from the branch hardware, allowing the Controller to handle the heavy lifting of orchestration and global synchronization of identity data.
NEW QUESTION # 89
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