Pass the Versa Networks Administrator SD-WAN Specialist VNX301 Questions and answers with Dumpstech

In Versa SD-WAN, a Spoke-to-Hub-Only topology is specifically designed for deployments where spoke branches communicate only with hub resources and not with other spokes. Versa’s SD-WAN design documentation states that in a spoke-to-hub-only topology, the default behavior is that only hub routes are advertised, and spoke routes are not re-advertised by the hub branch. It also explains that this topology is used when spokes do not have to communicate with each other.

Even though the hub in the exhibit advertises a default route, that does not change the topology behavior into spoke-to-spoke communication. The default route can attract unknown traffic from the spokes toward the hub, but the Spoke-to-Hub-Only policy prevents the spoke prefixes from being redistributed or imported in a way that allows spoke-to-spoke reachability. Versa documentation further shows that spoke routes are filtered using BGP communities and import policies, and that the spoke route table contains only destinations behind the hubs, not other spoke routes.

The correct answer is A . Versa CGNAT troubleshooting documentation states that, after connecting to the vsmd daemon, administrators can view CGNAT access lists used for traffic matching with the command show cgnat acl info < tenant-id > . The sample output shows ACL handle, rule ID, category, precedence, VRF, source IP, destination IP, tenant ID, and total filters.

This is the correct command when NAT configuration appears present but translations do not occur, because it verifies whether the runtime dataplane has the correct traffic-match rules. If the source prefix, destination prefix, VRF, or precedence is wrong, the session may never match the NAT rule, and no translation will be applied.

show system status checks system services. show device clients shows active and failed sessions, CPU usage per session, and memory load for processes. show system storage shows disk usage. These commands are useful in other troubleshooting workflows, but they do not validate CGNAT ACL matching criteria for tenant traffic.

The correct answers are A, B, and E . Versa Operating System, or VOS , is the software platform used for Versa SD-WAN branch and headend functions. Versa troubleshooting documentation explicitly refers to common runtime state across SD-WAN Controller, branch, and hub devices , confirming that VOS is used for Controller and branch-style SD-WAN roles. Versa monitoring documentation also lists SD-WAN branches, SD-WAN Controller nodes, SD-WAN hubs, vCPEs, and uCPEs as assets that are monitored and managed in Versa Director, which aligns with VOS being used as a branch/edge and controller platform.

VOS can also act as a uCPE platform . Versa documentation includes procedures to configure uCPE on a VOS device, showing that VOS can host or support uCPE deployment use cases.

The originally provided answer A, C, D is not correct. A Log Collector or log forwarder function belongs to the Versa Analytics architecture, not the VOS branch role; Versa’s design guide states that the log forwarder is part of the Versa Analytics node or can run as a standalone log-forwarder server. A Zookeeper arbiter is also not a standard VOS SD-WAN device role in this context.

The correct answers are A and D . Versa stateful firewall service includes classic firewall functions that track sessions and enforce traffic policy, and it can work with DoS policy enforcement. Versa’s CLI guide includes Configuring DoS policies under the security configuration area, where DoS rules can match on source, destination, services, applications, URL category, IP version, DSCP, TTL, EtherType, and other packet or session attributes, and can then apply aggregate or classified DoS profiles. This validates DoS protection as a stateful firewall/security service capability.

Application-Level Gateways, or ALGs , are also associated with stateful firewall/NAT behavior because they inspect and assist protocol handling for applications that embed addressing or dynamic port information inside the payload or control channel. This is part of traditional stateful firewall service behavior rather than UTM content inspection.

The correct answer is A . Versa troubleshooting documentation states that after a branch device successfully establishes an IPsec connection to the Controller node, the Controller sends a notification to the Director node. To display the details of this notification, the documentation instructs administrators to issue the show alarms CLI command. It also provides examples using show alarms | match branchd | match br101 to view branch-connect and branch-disconnect events.

These alarm entries are valuable during onboarding because they show whether the branch reached the Controller, whether staging progressed, and whether the branch later disconnected. For example, branch lifecycle notifications include factory-default connection, staged connection, Stage 3 connection with WAN IP addresses, and branch disconnect events.

show system storage is useful for disk usage, show interfaces detail helps with link state, speed, duplex, and interface counters, and show cgnat acl info is used for CGNAT matching. None of those commands directly confirms branch lifecycle notifications between Controller and Director.

The correct answer is C . In Versa Secure SD-WAN, licensing and device management are centralized through Versa Director , not directly through the Controller. During zero-touch provisioning and staging, the branch device is brought under centralized management, and Director pushes the required staging and operational configuration. Versa staging documentation explains that during Stage 2 and Stage 3, Versa Director pushes configuration to the branch device, and after Stage 3 the branch becomes fully operational as part of the customer SD-WAN network.

Versa monitoring documentation also shows that the Director node provides license visibility, specifically stating that the Director monitoring view includes a License pane that displays information about the licenses installed on the VOS devices managed by the Director node. This confirms that license administration is handled from Director, not from the Controller. The Controller is responsible for SD-WAN control-plane functions and tunnel connectivity, but it is not the primary system for managing customer license subscriptions.

Option A is incomplete because the practical operational model is not simply receiving individual soft licenses. Option B incorrectly implies licenses are preloaded on physical CPEs as the key licensing method. Option D is incorrect because ZTP management and license subscription handling are not performed by the Controller.

The correct answer is A . Versa branch troubleshooting documentation states that the provider organization should have MP-BGP configured for SD-WAN deployments so that notifications for all relevant branch events are delivered to the Versa Director node. This is significant during onboarding because branch lifecycle events, such as branch-connect and branch-disconnect, help Director determine where the branch is in the staging process and whether the next configuration push should occur.

MP-BGP does not replace IKE or IPsec. The branch still establishes IKE/IPsec to the staging server or Controller depending on the staging phase. MP-BGP also has nothing to do with URL filtering category updates. While BGP can be used in LAN or WAN routing designs, the specific issue described here concerns provider-organization SD-WAN control-plane event delivery.

Therefore, if branch lifecycle events are not appearing properly, validating provider-organization MP-BGP configuration is part of the correct troubleshooting workflow, especially in addition to checking data-path and IPsec connectivity.

The correct action is to update the WAN gateway IP address in Device Bind Data and onboard the branch appliance again. Device Bind Data supplies site-specific values, such as WAN interface addressing and gateway information, that are merged with the workflow and template configuration during onboarding. If the wrong WAN gateway is entered, the branch may activate successfully from a workflow perspective, but the resulting WAN routing configuration is incorrect. As a result, the branch cannot establish proper transport reachability to the Controller. Versa troubleshooting documentation explains that, after establishing transport connectivity from a branch to a Controller, at least one WAN interface must be available, and the branch then establishes IKE-based IPsec connectivity to the Controller. If that IKE/IPsec connectivity fails, the Controller-facing ptvi interface remains down.

Changing the configuration only from the Appliance context is not the best answer because the incorrect value originated in the bind-data source used for provisioning. Modifying it manually from the branch CLI is also not recommended because the device is managed by Versa Director and template-driven configuration. Resetting the device does not automatically discover or “ping” the correct gateway. The correct remediation is to fix the bind data and repeat onboarding so the branch receives the correct generated configuration.