Versa Networks Versa Certified SD-WAN Specialist (VNX300) VNX301 Exam Dumps: Updated Questions & Answers (May 2026)

The correct answer is A . Versa’s handy CLI command reference lists show interfaces brief as the command used to view a list of interfaces along with their MAC addresses, operational and administrative status, tenant ID, VRF, and IP addresses. This is one of the first commands administrators run when validating device bring-up, staging interface assignment, WAN/LAN mapping, or whether a template applied interface addressing as expected.

For deeper interface troubleshooting, show interfaces detail provides additional information such as interface index, host interface, MTU, speed and duplex settings, RX/TX errors, and bridge information. However, for a quick overview of state and addressing across interfaces, show interfaces brief is the correct choice.

show system package-info identifies the running VOS software package. show system storage reports system storage resources. show coredumps shows generated core files. These are valuable operational commands, but they do not provide the requested interface status and addressing summary.

The correct answers are A, B, and D . For large-scale Versa Secure SD-WAN onboarding, common configuration is reusable through templates and grouping. A device template , also known as a post-staging template, provides the common base configuration that is applied to multiple VOS branch appliances. Versa documentation repeatedly shows configuration tasks being performed under Templates > Device Templates , where an organization is selected and the post-staging template is opened in Appliance view for common configuration.

A device group is also shared by multiple appliances because it groups devices that should receive the same template associations and common service behavior. This is the proper way to profile many branches with similar deployment requirements. Service templates are also shared objects. They are used to apply service-specific configurations, such as SD-WAN traffic steering, application steering, QoS, security, or other common services, across devices. Versa SD-WAN design documentation explains that application-steering templates automate business-intent policies and simplify management by combining application classification, forwarding-class mapping, and SD-WAN policy logic in a reusable template.

A workflow device is device-specific, and device bind data contains site-specific values such as interface addressing, gateways, VLANs, and other per-branch parameters. Therefore, those are not the shared configuration objects.

The correct answer is A . In Versa SD-WAN application steering, SaaS or cloud-path selection can use monitoring and DNS-based behavior to determine the best path for an application. For real-time applications such as voice, session stability is often more important than aggressively moving active flows after every path-score change. Session pinning to DNS path is the forwarding-profile behavior that keeps a session associated with the path selected when the DNS/application path decision was made.

This matters because voice and collaboration applications can be sensitive to path changes, packet reordering, and jitter. Pinning prevents active sessions from being unnecessarily moved mid-flow as SaaS monitoring scores change, while still allowing new sessions to take advantage of newer path decisions.

Packet striping is used to distribute packets across multiple circuits and can create reordering concerns for some applications. Symmetric forwarding controls reverse-path behavior rather than DNS-based session stability. Random packet drop is a DoS mitigation action, not a SaaS path-selection feature. Therefore, the best answer is Session pinning to DNS path.

The correct answer is B . Versa’s SD-WAN data-path troubleshooting documentation shows that show vsf tunnel access-circuits ... detail can display the access-circuit state and encapsulation chain used for tunnel forwarding. In the example, the output lists multiple encapsulations, including VMLH , MPLS-over-GRE , IPsec-ESP , and VXLAN . It also shows transport details such as source IP, destination IP, UDP transport, tunnel MTU, SPI values, and SLA state.

This confirms that the VOS data plane has built the SD-WAN tunnel encapsulation stack required to forward overlay traffic across the underlay. IPsec-ESP in the chain indicates encrypted tunnel handling, while VXLAN and other encapsulation components are part of the SD-WAN overlay forwarding structure.

The output does not indicate simple bridging, plain-text-only GRE, or bypass of the VOS data plane. Instead, it proves that the packet path is being processed through the VOS tunnel forwarding framework and that the administrator is looking at the SD-WAN access-circuit tunnel state.

The correct answer is A . Versa CGNAT troubleshooting documentation provides commands to inspect CGNAT state inside the vsmd daemon. To view summary information about configured tenants, the document instructs administrators to issue show cgnat tenants . The sample output shows each tenant ID and counters such as the number of configured rules, pools, DS-Lite service chains, 6RD service chains, static NAT entries, subscribers, endpoint-independent mapping entries, endpoint-independent filtering entries, and softwires.

This command is especially useful when CGNAT configuration appears correct in Director but translation is not happening, because it confirms whether the runtime dataplane process actually has the tenant CGNAT state.

show interfaces brief shows interface status and IP addressing. show alarms shows event notifications, and show system uptime shows how long the system has been running. These are useful operational commands but do not show CGNAT tenant programming inside vsmd.

The correct answers are C and D . Versa templates are designed to reuse common configuration while still allowing per-device customization. Template variables allow the same template to be deployed to multiple appliances while using device-specific values such as addresses, VLAN IDs, DHCP information, or other bind-data values. Versa documentation for deploying templates describes assigning values to variables contained in a main template that are specific to the device. This makes option C correct.

Option D is also correct because Versa workflows are used to create templates for VOS device configuration. Versa documentation states that workflows are used to create templates to configure VOS devices, and also to create templates for application steering, spoke groups, and service chains.

Option A is not correct in the normal Versa Director onboarding model because a group of devices is associated with one staging template and one post-staging template, rather than multiple device templates being stacked per appliance. Option B is also incorrect because service templates are optional reusable service-specific fragments. Versa documentation states that service templates can be used by multiple device templates and device groups, but it does not require every appliance to have one.

The correct answer is A . Versa CGNAT troubleshooting documentation shows the command show cgnat acl info < tenant-id > for viewing CGNAT access lists used for traffic matching. The example output includes columns such as ACL handle , RuleId , Category , Precedence , VRF , Source IP , and Destination IP . It also shows tenant ID and total filters.

This command is useful when a CGNAT rule exists in configuration but sessions are not being translated. By checking the ACL output, the administrator can confirm whether the correct source prefix, destination prefix, VRF, and rule precedence are actually programmed in the dataplane. If the wrong VRF or subnet is shown, the rule may never match the intended traffic.

System uptime and CPU usage are operational health indicators. SLA metrics are SD-WAN path-quality values. BGP AS path and local preference are routing attributes. None of these directly show CGNAT access-list match programming.

In the exhibit, the Add Associate Interface/Network window has Interface selected, and the interface name is set to vni-0/0 . The DSCP rewrite option is not available because rewrite behavior is intended to be applied at the network association level for the WAN network, not directly while associating only the physical/logical interface. For WAN-facing CoS, the scheduler and shaping parameters can be attached to an interface, but DSCP rewrite policies are applied to remark traffic as it exits through a network context.

Versa SD-WAN design documentation explains that QoS rewrite rules rewrite packet QoS attributes as packets leave the VOS device, and that rewrite rules can modify IEEE 802.1p bits, IPv4 TOS/DSCP bits, and IPv6 traffic class bits. It also explains that a rewrite policy is commonly applied on a WAN network to remark traffic based on the forwarding class and loss priority assigned by QoS or App QoS policies. In the design example, Versa explicitly describes applying a QoS propagation or rewrite policy on the MPLS WAN network to remark traffic to a DSCP value. Therefore, the issue is the association type: it is set to Interface, not Network.

The correct answer is C . Versa’s bandwidth and throughput troubleshooting documentation specifically instructs administrators to check link speed and half-duplex conditions with the command show interfaces detail interface-name. The example output shows an interface operating at half-duplex / 100 Mbps , and the documentation states that the interface should not be in half-duplex mode and that 100 Mbps was incorrect in that scenario.

A duplex mismatch or incorrect negotiated speed can severely reduce effective throughput, cause collisions or retransmissions, and make SD-WAN overlay performance appear poor even when the overlay itself is functioning. Versa recommends fixing half-duplex and link-speed issues by correcting the configuration on the device to which the VOS device is connected and checking the ISP-side transmission mode, such as auto/auto.

SLA probing, Controller route advertisement, and VXLAN encapsulation may affect SD-WAN path selection or tunnel formation, but the evidence in the question directly points to a physical or underlay Ethernet negotiation problem.

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.