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Palo Alto Networks SD-WAN-Engineer Exam Syllabus Topics:
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NEW QUESTION # 35
During the Zero Touch Provisioning (ZTP) process of a new ION device at a branch site, which interface ports are supported by default to request an IP address via DHCP and reach the Prisma SD-WAN controller for claiming?
- A. Only the USB port via a cellular modem
- B. Only the dedicated Controller port (if available)
- C. Any LAN or WAN port on the device
- D. The dedicated Controller port, or Port 1 / Internet 1 if a dedicated port is absent
Answer: D
Explanation:
Comprehensive and Detailed Explanation
For a successful Zero Touch Provisioning (ZTP) experience, the ION device must be able to obtain an IP address and reach the internet immediately upon boot-up.
According to Palo Alto Networks hardware guides, the Controller Port (often labeled specifically as "CONTROLLER" on models like the ION 3000/7000/9000) is pre-configured to act as a DHCP client by default. It is the preferred interface for the initial "call home" process.
However, for smaller desktop models (like the ION 1000/2000/1200 series) or scenarios where a dedicated management network is not available, the device firmware is also configured to attempt DHCP client requests on Port 1 (often labeled as Internet 1 or simply 1).
Connecting the ISP circuit to any random port (like Port 4 or a LAN port) will not work for ZTP because those interfaces are not pre-configured as DHCP clients in the factory default state. Therefore, the installer must ensure the internet uplink is connected to either the dedicated Controller port or Port 1/Internet 1 to ensure the device can resolve the controller FQDN and download its configuration.
NEW QUESTION # 36
When planning a software upgrade for a large fleet of ION devices, what is the recommended best practice regarding the "Software Version" assigned in the Site Summary?
- A. Assign the new software version to the "Global" site configuration to upgrade all 1000+ sites simultaneously.
- B. Use Site Tags to group sites (e.g., "Pilot", "Region-1", "Region-2") and assign the new software version incrementally to these tags to minimize risk.
- C. The ION devices upgrade themselves automatically whenever a new version is released by Palo Alto Networks.
- D. Manually log into each device and upload the new image file via USB.
Answer: B
Explanation:
Comprehensive and Detailed Explanation
The best practice for managing upgrades in a large-scale Prisma SD-WAN environment is the Canary or Phased Rollout approach, utilizing Site Tags.
Risk Mitigation: Upgrading all sites simultaneously (Option B) is highly risky. If the new software version has an unforeseen bug or compatibility issue with a specific circuit type, the entire network could face an outage.
Tag-Based Management: Administrators should create tags such as "Upgrade-Phase-1" (Pilot sites) or "Region-North". By assigning the specific Software Version to the Tag (rather than the individual site or the global default), the controller pushes the update only to that subset of devices.
Procedure:
Apply update to "Pilot" tag (5 sites). Monitor for 24-48 hours.
Apply update to "Region-1" tag (50 sites). Monitor.
Eventually, update the Global default once confidence is high.
Option A is unscalable, and Option D is incorrect as the administrator retains full control over when upgrades occur; they are not forced automatically without policy configuration.
NEW QUESTION # 37
For how many hours are Prisma SD-WAN VPN shared secrets valid?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
In the Prisma SD-WAN architecture, security is built directly into the AppFabric using a centralized, controller-led approach to key management. Unlike traditional VPNs that rely on manual Internet Key Exchange (IKE) or static Pre-Shared Keys (PSKs) which can be administratively burdensome and security- vulnerable, Prisma SD-WAN automates the entire lifecycle of encrypted tunnels. The Prisma SD-WAN Controller acts as the central authority for identity and key distribution for all ION (Instant-On Network) devices within the tenant's fabric.
Specifically, the VPN shared secrets used to secure these tunnels are ephemeral and are valid for exactly 24 hours. This 24-hour validity period is a security best practice implemented by Palo Alto Networks to limit the
"blast radius" or window of exposure in the unlikely event that a key is compromised. The controller automatically handles the generation, distribution, and rotation of these secrets. Before the 24-hour timer expires, the controller pushes new keys to the ION devices, which then perform a hitless rollover. This ensures that the data plane remains active and encrypted without requiring manual intervention from a network administrator. If an ION device loses its control plane connection to the controller, it will maintain its existing tunnels using the current keys until they expire, at which point it must re-authenticate with the controller to receive a new set of valid secrets. This automated rotation is a core component of the Prisma SD- WAN Zero-Trust security model.
NEW QUESTION # 38
When defining a Path Quality Profile (SLA) for a "Transactional" application group (e.g., Citrix, Oracle), the administrator sets the "Packet Loss" threshold to 1%.
What happens to the traffic for this application if all active paths currently exceed this 1% loss threshold?
- A. The system selects the best available path (lowest loss) among the active paths, even if it violates the profile.
- B. The system automatically enables a Backup path, even if the Active paths are technically "Up" but degraded.
- C. The traffic is dropped to prevent data corruption.
- D. The traffic is queued indefinitely until a path recovers.
Answer: A
Explanation:
Comprehensive and Detailed Explanation
This behavior describes the "Best Available Path" logic inherent in Prisma SD-WAN's availability design.
* SLA Thresholds: Path Quality Profiles act as filters to identify compliant paths.
* Total Violation: If all configured "Active" paths violate the SLA (e.g., Path A has 2% loss, Path B has
5% loss, and the threshold is 1%), the system does not drop the traffic (Option A) because maintaining connectivity is prioritized over perfect quality.
* Selection Logic: The system enters a fallback state where it compares the available active paths and selects the "Least Bad" one-the path that is closest to meeting the SLA (in this case, Path A with 2% loss).
* Backup Paths: Traffic would only move to a Backup path (Option D) if the policy explicitly configures the backup path to engage upon SLA violation of the active set. However, strictly speaking, if only active paths are considered and all fail, it picks the best of the active group rather than blackholing the traffic.
NEW QUESTION # 39
In a Prisma SD-WAN deployment, what is the defining characteristic of a "Standard VPN" compared to a "Secure Fabric Link"?
- A. Standard VPNs support BGP, whereas Secure Fabric Links only support static routing.
- B. Standard VPNs are automatically built between ION devices, while Secure Fabric Links require manual configuration.
- C. Standard VPNs use GRE encapsulation, while Secure Fabric Links use VXLAN.
- D. Standard VPNs are manually configured IPSec tunnels to non-ION endpoints, while Secure Fabric Links are automated tunnels between ION devices.
Answer: D
Explanation:
Comprehensive and Detailed Explanation
In the Prisma SD-WAN architecture, the terminology distinguishes between "Native" automation and "Legacy" interoperability.
Secure Fabric Links: These are the proprietary, automated overlay tunnels created between two Prisma SD-WAN ION devices (e.g., Branch ION to Data Center ION). The controller automatically manages the IP addressing, key rotation, and routing for these links. You do not manually configure "Phase 1" or "Phase 2" parameters for Secure Fabric links.
Standard VPNs: These are traditional, standards-based IPSec tunnels configured to connect an ION device to a Non-ION endpoint (Third-Party Peer). This is used for "Data Center to Data Center" connections where one side is a legacy firewall (e.g., Cisco ASA, Palo Alto Networks NGFW) or for connecting to cloud security services (SSE) that do not have a specific CloudBlade integration. For a Standard VPN, the administrator must manually define the IKE/IPSec profiles, pre-shared keys, and peer IP addresses to match the third-party device's configuration.
NEW QUESTION # 40
What is the primary function of the "CloudBlade" platform in a Prisma SD-WAN deployment when integrating with third-party services or Prisma Access?
- A. It is a cloud-based API integration layer that automates the configuration of the ION devices and the remote service.
- B. It is a monitoring dashboard used exclusively for viewing flow records.
- C. It is a containerized application running on the ION device that performs Deep Packet Inspection (DPI).
- D. It acts as a physical line card on the ION device to provide additional 10Gbps interfaces.
Answer: A
Explanation:
Comprehensive and Detailed Explanation
The CloudBlade platform is a distinguishing architectural component of the Prisma SD-WAN solution. It is not a physical piece of hardware, nor is it software that runs directly on the branch ION device's CPU.
Instead, the CloudBlade platform is a cloud-based API integration layer hosted by Palo Alto Networks. It functions as an intelligent broker or "translator" between the Prisma SD-WAN Controller and external third-party services (such as Prisma Access, Amazon Web Services, Azure, ServiceNow, or Zscaler).
When an administrator configures the Prisma Access CloudBlade, for example, they input their API credentials and intent (e.g., "Connect all US branches to US West"). The CloudBlade engine then:
Communicates with the Prisma Access API to provision the remote IPSec termination nodes (Security Processing Nodes).
Translates this configuration into specific instruction sets for the Prisma SD-WAN Controller.
The Controller then pushes the necessary VPN tunnel configurations, IKE parameters, and routing rules to the relevant ION devices.
This architecture eliminates the need for manual IPSec configuration on every branch device. It ensures that if the third-party service changes its IP addresses or settings, the CloudBlade can detect the change via API and automatically update the branch fleet, maintaining connectivity without manual administrator intervention.
NEW QUESTION # 41
When integrating Prisma SD-WAN with Prisma Access, what is the specific role of the Service Connection (SC)?
- A. It is the SSL VPN portal used by mobile users to connect to the network.
- B. It is the IPSec tunnel that connects a Branch site to the Prisma Access gateway for internet access.
- C. It connects the Prisma Access cloud infrastructure back to the customer's Headquarters or Data Center for access to internal private resources (e.g., AD, DNS, Intranet).
- D. It is the peering link between different Prisma Access regions to optimize global traffic.
Answer: C
Explanation:
Comprehensive and Detailed Explanation
In the Prisma Access architecture (integrated with SD-WAN), distinct connection types serve different purposes.
Remote Networks: These are the connections from your Branch sites (using ION devices) into the cloud. They allow branches to get to the internet or other branches.
Service Connections (SC): This is a specialized high-bandwidth connection used to bridge the Prisma Access Cloud to your Private Data Center or Headquarters.
The primary use case for a Service Connection (Option A) is to allow mobile users and branch users (who are connected to the Prisma cloud) to reach private, centralized resources that still reside on-premise, such as Active Directory controllers, legacy databases, or mainframes. Without a Service Connection, users in the cloud would be able to reach the internet and each other, but not the servers physically located in your HQ data center. The CloudBlade automates the creation of these tunnels, but architecturally, the "Service Connection" is the "cloud-to-HQ" bridge.
NEW QUESTION # 42
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.)
- A. The connection to ISP A will be usable, but the connection to LTE/5G will not.
- B. Both the connection to ISP A and the connection to LTE/5G will be usable.
- C. The newly active ION will send a gratuitous ARP to the LAN for the IP address of any SVIs.
- D. The VRRP Virtual IP address assigned to any SVIs will be moved to the newly active ION.
Answer: B,C
Explanation:
Prisma SD-WAN High Availability (HA) for branch ION devices, particularly the Gen-2 ION 1200-S, is designed to provide "100% WAN Capacity" preservation during a hardware or power failure. This is achieved through the use of Bypass Pairs (Fail-to-Wire). In the provided topology, the ISP A and LTE/5G circuits are cross-connected using the bypass ports (typically ports 3 and 4 on the ION 1200-S).
When the "Active" ION device loses power, the internal physical relays in its bypass ports transition to a closed state, effectively creating a physical bridge between the ports. In this scenario, the LTE/5G signal- which enters the Active ION's port 4-is mechanically bridged to port 3, allowing it to pass through to port 4 of the Standby ION. Simultaneously, ISP A is already connected to the Standby ION. Consequently, once the Standby device completes its transition to the "Active" state, it has physical access to both WAN circuits, validating Statement A.
Regarding the LAN transition, Prisma SD-WAN does not use standard VRRP for ION-to-ION HA; instead, it uses a proprietary Control Plane HA mechanism. When the failover occurs, the newly active ION takes over the IP addresses of all configured Switch Virtual Interfaces (SVIs) and LAN interfaces. To ensure the downstream Layer 2 infrastructure (like the LAN switches shown in the diagram) updates its MAC address tables to point to the new physical hardware for those IPs, the newly active ION immediately broadcasts a Gratuitous ARP (GARP). This ensures that LAN traffic is correctly steered to the new device without a significant timeout, validating Statement C.
NEW QUESTION # 43
Return traffic for an application from the branch is being dropped on the branch ION. Application traffic arrives via SD-WAN internet overlay at the branch, and path policy for the application at the branch has the following settings:
Active = MPLS Overlay
Backup = Prisma Access on internet
Which branch configuration is the probable cause of this behavior?
- A. It has Prisma Access tunnel over MPLS circuit but not on the internet circuit.
- B. It has one MPLS and one internet circuit.
- C. It has two internet circuits and no MPLS circuit.
- D. It has no MPLS circuit, and the Prisma Access tunnel is down.
Answer: C
Explanation:
In Prisma SD-WAN, path selection and traffic symmetry are governed by the Path Policy and the available physical/virtual circuits at a site. The scenario describes a situation where return traffic is dropped on the branch ION after arriving via an Internet overlay. To understand why, we must analyze the "Active" and
"Backup" paths defined in the policy.
The policy specifies Active = MPLS Overlay and Backup = Prisma Access on internet. In a healthy environment, the ION device expects to send and receive traffic based on these defined paths. If the site actually has two internet circuits and no MPLS circuit (Option C), a critical mismatch occurs. Because there is no MPLS circuit available to satisfy the "Active" path, the device will fall back to the "Backup" path for initiated traffic.
However, the core issue here relates to how Prisma SD-WAN handles asymmetric routing and session state.
If traffic arrives at the branch via an "Internet Overlay" path that is not explicitly defined or allowed as a valid path for that specific application in the Path Policy, the ION device's flow integrity checks may drop the packets. Specifically, if the ION is configured with only Internet circuits but the policy is looking for an MPLS overlay that doesn't exist, the device may fail to correctly associate the return packets with the session state if the paths are perceived as "unbound" or "invalid" per the policy. This behavior is a security feature designed to ensure that traffic only traverses paths that meet the administrator's defined performance and security criteria. Without an MPLS circuit present, the policy cannot be fully realized, leading to potential drops for traffic arriving on paths not intended for that specific application flow.
NEW QUESTION # 44
When identifying devices for IoT classification purposes, which two methods does Prisma SD-WAN use to discover devices that are not directly connected to the branch ION? (Choose two.)
- A. LLDP
- B. Syslog
- C. SNMP
- D. CDP
Answer: B,C
Explanation:
Comprehensive and Detailed Explanation
Prisma SD-WAN (formerly CloudGenix) integrates with Palo Alto Networks IoT Security to provide comprehensive visibility into all devices at a branch, including those that are not directly connected to the ION device. While the ION automatically detects and classifies devices connected directly to its interfaces via traffic inspection (DPI), DHCP, and ARP analysis, gaining visibility into off-branch devices (devices connected to downstream switches or access points) requires additional discovery mechanisms that can query the network infrastructure or ingest its logs.
1. SNMP (Simple Network Management Protocol): This is the primary active discovery method for off- branch devices. The Prisma SD-WAN ION device acts as a sensor that actively polls local network switches and wireless controllers using SNMP. By querying the ARP tables and MAC address tables (Bridge MIBs) of these intermediate network devices, the ION can identify endpoints that are connected to the switch ports, even if those endpoints are not currently sending traffic through the ION. This allows the system to map the topology and discover silent or lateral-traffic-only devices.
2. Syslog: In conjunction with SNMP, the IoT Security solution can utilize Syslog messages to discover and profile devices. Network infrastructure devices (like switches and WLAN controllers) can be configured to send Syslog messages to the collection point (which enables the IoT Security service) whenever a device connects or disconnects (e.g., port up/down events, DHCP snooping logs, or 802.1x authentication logs).
These logs provide real-time data about device presence and identity (MAC/IP mappings) for devices that are not directly adjacent to the ION, ensuring 100% visibility across the branch network segments. LLDP (A) and CDP (B) are typically Link Layer discovery protocols used for discovering directly connected neighbors and do not propagate beyond the immediate link, making them unsuitable for discovering devices multiple hops away or behind a switch.
NEW QUESTION # 45
An engineer at a managed services provider is updating an application that allows its customers to request firewall changes to also manage SD-WAN. The application will be able to make any approved changes directly to devices via API.
What is a requirement for the application to create SD-WAN interfaces?
- A. REST API's "sdwanInterfaceprofiles" parameter on a Panorama device
- B. XML API's "sdwanprofiles/interfaces" parameter on a Panorama device
- C. XML API's "InterfaceProfiles/sdwan" parameter on a firewall device
- D. REST API's "sdwanInterfaces" parameter on a firewall device
Answer: D
Explanation:
Comprehensive and Detailed Explanation at least 150 to 250 words each from Palo Alto Networks SD-WAN Engineer documents:
In Palo Alto Networks PAN-OS SD-WAN environments, automation and orchestration are key components for service providers managing large-scale deployments. The PAN-OS REST API provides a modern, structured way to programmatically manage configuration objects, including those required for SD-WAN functionality.
When an application is designed to push changes directly to devices (individual firewalls) rather than through a centralized template in Panorama, it must interact with the firewall's local REST API. To successfully create a virtual SD-WAN interface, the application must target the correct resource URI. In the PAN-OS API schema, the logical SD-WAN interface-which groups physical links to enable application-based path selection-is managed via the sdwanInterfaces parameter within the REST API.
It is important to distinguish between the interface itself and the profiles that support it. Option A refers to sdwanInterfaceprofiles, which are the objects used to define the characteristics of a link (such as bandwidth, link type, and monitoring frequency), but not the interface itself. Furthermore, since the scenario specifies making changes "directly to devices," the target must be the firewall rather than Panorama. While Panorama can manage these objects via templates, a direct-to-device automation workflow necessitates using the firewall's REST API endpoint. Utilizing the REST API over the legacy XML API is the recommended standard for modern integrations due to its ease of use with JSON payloads and alignment with contemporary DevSecOps practices. By using the sdwanInterfaces parameter on the firewall, the MSP application can programmatically bind physical Layer 3 interfaces to the SD-WAN fabric.
NEW QUESTION # 46
What is the number and structure of Prisma SD-WAN QoS queues supported per WAN interface?
- A. 12 queues
4 classes1
3 application criteria within each class - B. 16 queues
4 classes
4 application criteria with each class - C. 8 queues
2 classes
4 application criteria within each class - D. 8 queues
1 priority queue
7 non-priority queues
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 × 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 # 47
An administrator has configured a Zone-Based Firewall (ZBFW) policy on a branch ION. They created a rule to "Allow" traffic from the "Guest" zone to the "Internet" zone. However, users in the "Guest" zone are reporting they cannot reach a specific public website, and the Flow Browser shows the flow state as "REJECT".
What is the most likely reason for this specific rejection, assuming the "Allow" rule is correctly placed at the top of the list?
- A. There is a "Deny" rule in the "Global" policy stack that is taking precedence over the "Local" site rule.
- B. The implicit default action at the bottom of the security policy is "Deny All".
- C. The ION device does not support firewalling for HTTP traffic.
- D. The "Allow" rule does not have the specific "Application" defined (it is set to Any), causing a mismatch.
Answer: A
Explanation:
Comprehensive and Detailed Explanation
In Prisma SD-WAN, security policies can be applied via Policy Stacks, which often have a hierarchy.
Stack Precedence: A common configuration involves a Global Security Stack (applied to all sites) and a Local/Site Security Stack (specific to one site). If the administrator configured a "Global" rule that says "Deny Access to Gambling Sites" (or a specific IP list), and that rule is higher in the binding order or part of a higher-priority stack, it will enforce the block before the local "Allow Guest to Internet" rule is processed.
Specifics of "REJECT": The state REJECT specifically implies a policy enforcement action (sending a TCP RST or ICMP Unreachable) rather than a silent drop or a routing failure.
Why not A? If the "Allow" rule is at the top and matches the traffic parameters (Zone/IP), the Default Deny at the bottom would never be reached. The issue implies a higher priority Deny exists.
NEW QUESTION # 48
An administrator needs to generate a monthly report showing the "Top Applications" by bandwidth usage across all branch sites to justify a bandwidth upgrade.
Which specific component of the Prisma SD-WAN interface is designed to create, schedule, and email these PDF summaries?
- A. Activity Charts
- B. Media Analytics
- C. Reports
- D. Flow Browser
Answer: C
Explanation:
Comprehensive and Detailed Explanation
Prisma SD-WAN separates real-time visibility from historical summarization.
* Reports (C): The Reports section is the dedicated engine for generating historical summaries.
Administrators can create custom report templates (e.g., "Monthly Executive Summary") that include specific widgets like "Top Applications by Volume," "Site Availability," or "Circuit Utilization." Crucially, this feature allows for Scheduling, where the system automatically generates the PDF report at a set interval (e.g., first day of the month) and emails it to a distribution list.
* Activity Charts (A) / Media Analytics (B): These provide interactive, visual graphs for ad-hoc analysis but are not designed for generating downloadable, scheduled PDF summaries for management.
* Flow Browser (D): This is for deep-dive troubleshooting of individual sessions, not for high-level aggregate reporting.
NEW QUESTION # 49
An administrator has configured a Zone-Based Firewall (ZBFW) policy on a branch ION. They created a rule to "Allow" traffic from the "Guest" zone to the "Internet" zone. However, users in the "Guest" zone are reporting they cannot reach a specific public website, and the Flow Browser shows the flow state as
"REJECT".
What is the most likely reason for this specific rejection, assuming the "Allow" rule is correctly placed at the top of the list?
- A. There is a "Deny" rule in the "Global" policy stack that is taking precedence over the "Local" site rule.
- B. The implicit default action at the bottom of the security policy is "Deny All".
- C. The ION device does not support firewalling for HTTP traffic.
- D. The "Allow" rule does not have the specific "Application" defined (it is set to Any), causing a mismatch.
Answer: A
Explanation:
Comprehensive and Detailed Explanation
In Prisma SD-WAN, security policies can be applied via Policy Stacks, which often have a hierarchy.
* Stack Precedence: A common configuration involves a Global Security Stack (applied to all sites) and a Local/Site Security Stack (specific to one site). If the administrator configured a "Global" rule that says "Deny Access to Gambling Sites" (or a specific IP list), and that rule is higher in the binding order or part of a higher-priority stack, it will enforce the block before the local "Allow Guest to Internet" rule is processed.
* Specifics of "REJECT": The state REJECT specifically implies a policy enforcement action (sending a TCP RST or ICMP Unreachable) rather than a silent drop or a routing failure.
* Why not A? If the "Allow" rule is at the top and matches the traffic parameters (Zone/IP), the Default Deny at the bottom would never be reached. The issue implies a higher priority Deny exists.
NEW QUESTION # 50
What is the default behavior of the Zone-Based Firewall (ZBFW) for traffic originating from the ION device itself (e.g., DNS queries, NTP sync, or Controller connectivity) destined for the "Internet" zone?
- A. It is allowed only if the "Management" interface is used.
- B. It is allowed by the implicit "Self-Zone" allow rule.
- C. It is inspected by the "Global" security stack but bypasses local rules.
- D. It is denied by the default "Deny All" rule unless explicitly allowed.
Answer: B
Explanation:
Comprehensive and Detailed Explanation
The Self-Zone is a predefined security zone in the Prisma SD-WAN ZBFW that represents the ION device's own control plane and management traffic.
Default Rule: The security policy contains an implicit, uneditable default rule that Allows traffic originating from the Self-Zone to any destination zone (Internet, Private WAN, etc.).
Rationale: This ensures that the device can always perform essential critical functions-such as connecting to the Cloud Controller, resolving DNS, syncing time via NTP, and establishing VPN tunnels-without the administrator needing to manually create "Allow" rules for the device itself. If this traffic were blocked by a "Deny All" default, the device would become unmanageable (bricked) immediately after applying the policy.
NEW QUESTION # 51
A network operator receives a critical SITE_CONNECTIVITY_DOWN alarm for a branch site in the Prisma SD-WAN portal.
What specific condition triggers this alarm type?
- A. All Secure Fabric Links (VPNs) to all remote peers are down, isolating the site from the overlay.
- B. One of the two internet circuits at the site has gone down.
- C. The site has exceeded its licensed bandwidth capacity.
- D. The device has lost power and rebooted.
Answer: A
Explanation:
Comprehensive and Detailed Explanation
The SITE_CONNECTIVITY_DOWN alarm is a high-severity alert indicating a total loss of overlay connectivity for a site.
It does not trigger if just one circuit fails (Option B), provided that other circuits are still up and maintaining VPNs. A single link failure would typically trigger a "Link Down" or "VPN Down" alarm, but the Site connectivity would remain "Up" (degraded).
It does not simply mean the device rebooted (Option A), although a reboot would cause it temporarily; the alarm specifically tracks the state of the VPN fabric.
The SITE_CONNECTIVITY_DOWN alarm specifically generates when all Secure Fabric Links (VPN tunnels) on the device are in the "Down" state. This means the branch is completely isolated from the rest of the SD-WAN network (Data Centers and other branches), even if the device itself might still be powered on and reachable via the controller (management plane). It signifies a "Blackout" of the data plane for that location.
NEW QUESTION # 52
......
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