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NEW QUESTION # 83
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?
Answer: C
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 # 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: A,C
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
In a Prisma SD-WAN deployment, what is the defining characteristic of a "Standard VPN" compared to a
"Secure Fabric Link"?
Answer: A
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 # 86
What are two potential causes when a secondary public circuit has been added to the branch site, but the Prisma SD-WAN tunnel is not forming to the data center? (Choose two.)
Answer: B,D
Explanation:
Comprehensive and Detailed Explanation
In Prisma SD-WAN (formerly CloudGenix), the establishment of Secure Fabric (VPN) tunnels is automated but relies heavily on the correct definition of the Network Context for each interface. If a tunnel fails to form on a newly added s2econdary circuit, it is typically due to a misconfiguration in how the interface is defined in the ION portal.
1. Interface Scope (Statement D):
The Scope setting on an interface determines its function in the network topology.
Global Scope: This defines the interface as a WAN-facing port. The ION device will only attempt to build VPN tunnels (overlay) on interfaces configured with Global scope.
Local Scope: This defines the interface as a LAN-facing port (for users, switches, or APs). If the administrator mistakenly sets the scope to "Local" for the new internet line, the ION treats it as a private LAN segment and will not initiate any tunnel negotiation or WAN signaling on that port.
2. Interface Role/Circuit Category (Statement A):
Prisma SD-WAN uses Circuit Categories (often referred to as Interface Roles in general networking terms, or specifically "Circuit Category" in the ION UI) to determine peering logic.
To form a tunnel over a public internet link to a Data Center, the circuit attached to the interface must be categorized as "Internet".
The controller uses this category to match compatible endpoints. It knows that a "Private WAN" (MPLS) link cannot directly tunnel to an "Internet" link without a gateway. If the new circuit is not correctly selected/categorized as "Internet" (e.g., left undefined or set to a different category), the system will not attempt to build the standard IPSec overlay to the Data Center's public IP address.
NEW QUESTION # 87
A network administrator is viewing the Flow Browser to investigate a report that a specific user cannot access an internal web server. The flow entry for this traffic shows the "Flow State" as "INIT" and it remains in that state until it times out.
What does the "INIT" state indicate about the traffic flow?
Answer: C
Explanation:
Comprehensive and Detailed Explanation
In the Prisma SD-WAN Flow Browser, the Flow State provides a real-time snapshot of the TCP/UDP session lifecycle.
INIT (Initialization): This state indicates that the ION device has seen the initial packet of a new session (typically a TCP SYN) originating from the client (Source), but it has not yet seen a return packet (such as a TCP SYN-ACK) from the destination server.
Diagnosis: A flow stuck in INIT is a classic indicator of a "Blackhole" or reachability issue downstream. It implies that the ION successfully routed the packet out toward the destination, but the destination did not reply. Common causes include:
The server is offline.
A firewall in the path (or on the server itself) is dropping the traffic.
Routing is broken on the return path (asymmetric routing where the return traffic bypasses the ION).
If the flow had been denied by the ION's own firewall (Option C), the state would typically show as DENY or REJECT. If the handshake completed (Option A), the state would be ESTABLISHED. Therefore, INIT points to a lack of response from the remote end.
NEW QUESTION # 88
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