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| Section | Objectives |
|---|---|
| Topic 1: Policy Configuration | - QoS and Traffic Engineering - Application and Traffic Policy - Security Policy Integration |
| Topic 2: Monitoring and Troubleshooting | - Logs and System Health - Dashboard and Analytics - Troubleshooting Methodology |
| Topic 3: Configuration and Deployment | - Network Segmentation (VLANs, Zones) - WAN Interface Configuration - Initial Setup and Provisioning |
| Topic 4: Prisma SD-WAN Architecture and Components | - Data Center and Branch Architecture - Controllers and ION Devices - Prisma SD-WAN Solution Overview |
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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: C,D
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 # 85
Which condition, when configured within a performance policy, is a trigger for generating an incident related to application performance or path degradation?
Answer: C
Explanation:
In Prisma SD-WAN, Performance Policies are the primary mechanism used to define the expected quality of experience for specific applications. Unlike traditional monitoring that relies solely on "up/down" interface states, Prisma SD-WAN focuses on the actual health of the application path. An incident is triggered when the system detects a violation of defined service-level agreement (SLA) thresholds, such as excessive latency, jitter, or packet loss, even if the physical link remains active.
When an administrator configures a performance policy, they set specific bounds for these metrics. For example, a VoIP application might have an SLA requiring latency below 150ms and packet loss below 1%. If the ION device detects that the current path (e.g., a broadband circuit) exceeds these limits, it generates a performance incident. This incident serves two purposes: first, it alerts the administrator to the degradation; second, it triggers the Path Selection engine to proactively steer the application traffic to a more suitable
"Backup" or "Available" path that currently meets the SLA requirements.
Options B, C, and D represent system-level or network-level events that generate different types of alerts or incidents (System or Network incidents), but they are not the triggers defined within a Performance Policy.
Performance policies are specifically concerned with the application's perceived performance across the fabric. By focusing on SLA violations rather than just physical link status, Prisma SD-WAN ensures that business-critical applications remain functional even during "brownout" conditions where a circuit is technically "up" but performing poorly.
NEW QUESTION # 86
A network engineer is troubleshooting a "Voice Quality" issue. They suspect that the DSCP markings are being stripped or altered by the ISP.
Which tool in the Prisma SD-WAN portal allows the engineer to capture live packets on the WAN interface and inspect the IP header ToS/DSCP field?
Answer: B
Explanation:
Comprehensive and Detailed Explanation
To validate specific packet-level details like DSCP (Differentiated Services Code Point) values, header checksums, or exact payload sizes, a Packet Capture (PCAP) is required.
* PCAP Tool: Prisma SD-WAN provides a built-in PCAP utility accessible directly from the portal. The engineer can select the specific Interface (e.g., Internet 1), apply a Filter (e.g., port 5060 or host
1.2.3.4), and capture the traffic.
* Analysis: The resulting .pcap file can be downloaded and opened in Wireshark. This allows the engineer to definitively see if the packets leaving the ION have DSCP EF (46) and if the packets arriving (if capturing on the other side) still retain that marking, or if the ISP has bleached it to CS0 (0).
* Flow Browser (A): While it shows "Application" and metrics, the Flow Browser typically displays the assigned priority class, not necessarily the raw bit-level DSCP value present in the packet header on the wire.
NEW QUESTION # 87
What is the purpose of Secure Group Tag (SGT) propagation in Prisma SD-WAN?
Answer: D
Explanation:
In modern enterprise environments, maintaining a consistent security posture across disparate network domains is a major challenge. Prisma SD-WAN addresses this by supporting Secure Group Tag (SGT) propagation. SGTs are a key component of Cisco's TrustSec architecture, used to classify traffic based on the identity of the source (users, devices, or groups) rather than just IP addresses. By supporting SGT propagation, Prisma SD-WAN allows organizations to integrate with external identity-based security solutions seamlessly.
When traffic enters an ION device from a LAN segment where SGTs are already applied (typically by an access layer switch or an Identity Services Engine), the ION device can be configured to preserve or
"propagate" these tags as the traffic traverses the SD-WAN fabric.6 This ensures that the identity context remains intact even after the traffic has crossed the WAN.7 When the traffic reaches its destination-whether that is a data center, another branch, or a security gateway-the receiving device can use the SGT to enforce granular security policies.
This integration is vital for organizations moving toward a Zero Trust architecture. Instead of rewriting complex firewall rules at every hop, the SGT acts as a portable identity badge. Prisma SD-WAN's ability to handle these tags allows it to participate in a larger security ecosystem, ensuring that a "Finance" user is treated with the same security restrictions at a remote branch as they would be at the corporate headquarters.
This eliminates the need for manual IP-to-Group mapping across the WAN, reducing administrative overhead and minimizing the risk of security gaps during lateral movement of traffic.
NEW QUESTION # 88
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: C,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 # 89
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