Versa Networks VNX301 Testing Engine - VNX301 Exam

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Versa Networks VNX301 Prüfungsplan:

Thema	Einzelheiten
Thema 1	Underlay Overlay Technologies: Covers the foundational transport networks (underlay) and the virtual networks built on top of them (overlay), including tunneling protocols used in SD-WAN deployments.
Thema 2	Versa Security Services: Addresses the integrated security capabilities within Versa SD-WAN, such as next-generation firewall, IPS IDS, URL filtering, and segmentation.
Thema 3	Configuration and Provisioning: Covers how to deploy, configure, and onboard SD-WAN devices and services using Versa Director, including templates and zero-touch provisioning workflows.
Thema 4	Versa SD-WAN Services: Covers the WAN services delivered through Versa's platform, including application steering, traffic policies, SLA monitoring, and link aggregation.
Thema 5	SD-WAN Infrastructure Administration: Focuses on day-to-day operational tasks including monitoring, troubleshooting, software management, and maintaining the health of the SD-WAN environment.

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VNX301 Ressourcen Prüfung - VNX301 Prüfungsguide & VNX301 Beste Fragen

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Versa Networks Versa Certified SD-WAN Specialist (VNX300) VNX301 Prüfungsfragen mit Lösungen (Q32-Q37):

32. Frage
A VOS branch has two WAN circuits. You suspect the configured transport domain mapping is wrong because one link is not building the expected SD-WAN path. Which VSM control-plane command is most useful to check local WAN circuit information, transport domains, NAT status, and local tunnel-site details?

A. show orgs org-services cgnat summary
B. show system package-info
C. show device cpuload
D. show vsm p2mp local-tunnel-sites 0

Antwort: D

Begründung:
The correct answer is A . Versa SD-WAN data-path troubleshooting documentation instructs administrators to connect to the VSM control plane with vsh connect vsmd and then use show vsm p2mp local-tunnel-sites 0 to check the status of local site objects. The example output includes the local site key, neighbor IP, site type, site name, branch ID, tenant ID, and detailed WAN link information. It also shows fields such as WAN local VRF ID, WAN local link name, circuit information, link ID, behind-NAT status, shaping rate, public and private addresses, link flags, transport domain, and SLA interval.
This command is therefore highly relevant when validating whether the local SD-WAN site has learned and built the correct WAN transport objects for overlay tunnel creation. If a circuit is mapped to the wrong transport domain or has incorrect NAT/public/private address state, the local-tunnel-site output is one of the best places to confirm it.
The other commands are useful for software version, CGNAT summary, or CPU usage, but they do not show the detailed SD-WAN local tunnel-site transport mapping.

33. Frage
A branch uses a template variable for the WAN VLAN ID. During deployment, Branch-A receives VLAN
100 and Branch-B receives VLAN 200 from device bind data while using the same template. Which statement is correct?

A. This is impossible because all devices using a template must share identical VLAN IDs.
B. This is expected because template variables allow unique per-device values.
C. The Controller automatically rewrites VLAN IDs after IPsec comes up.
D. The device template must be duplicated for each branch.

Antwort: B

Begründung:
The correct answer is A . Versa template-based provisioning is designed to separate common configuration from site-specific values. A device template can define common interface, service, routing, and SD-WAN behavior, while variables and device bind data provide unique values for each appliance. This allows the same template to be reused across many branches while assigning different WAN IP addresses, gateways, VLAN IDs, circuit names, or other per-site parameters during onboarding.
In this scenario, Branch-A and Branch-B use the same template but receive different WAN VLAN IDs from bind data. That is normal and expected in a scalable SD-WAN deployment. Without variables, administrators would need to create a separate template for every site, which would be operationally inefficient and increase configuration drift.
The Controller does not automatically rewrite VLAN IDs after IPsec comes up; VLAN IDs must be part of the generated device configuration. It is also not required to duplicate the device template for each branch. The correct Versa design is reusable templates plus unique bind-data values.

34. Frage
Which two methods would be used to upgrade deployed VOS branch devices? (Choose two.)

A. Upload the new software package to Versa Director, then use the System > Director Upgrade dashboard to upgrade the devices.
B. Upload the new software package to Versa Director, then use the Appliances dashboard to upgrade the devices.
C. Update the template workflow and select the new software package in the Preferred Software Version field, redeploy the workflow, and commit the template.
D. Copy the .bin file to the VOS device to the appropriate path and upgrade the device using the CLI.

Antwort: B,D

Begründung:
The correct answers are A and C . Versa supports upgrading deployed VOS branch devices either directly on the VOS appliance or centrally through Versa Director. The Director-based method is performed from the Administration > Appliances area: Versa documentation says to select one or more Controller nodes or VOS devices, click the Upgrade Selected Appliances icon, choose the software image package, and proceed with the appliance upgrade. The same upgrade procedure is referenced for remaining VOS branch devices, including the option to upgrade branches individually or all at once.
A CLI-based upgrade using a software .bin package is also a valid operational method when the image is copied to the device and installed locally, particularly for controlled or recovery-style maintenance.
Option B is not the best answer for already deployed branch upgrades because the Preferred Software Version field applies to zero-touch provisioning; Versa states that during ZTP, Director upgrades a branch to the preferred version if applicable. That setting influences onboarding behavior, not the normal upgrade workflow for already deployed branches. Option D is incorrect because System > Director Upgrade is used to upgrade the Versa Director node itself, not VOS branch appliances.

35. Frage
You want to ensure that devices in your branch sites cannot source traffic from IP addresses that are not assigned to the branch sites. What will solve this problem?

A. Apply a captive portal function to verify the user identity for outbound traffic.
B. Apply a stateful firewall policy that allows traffic to the assigned LAN IP address range.
C. Apply an IP filter profile that only permits applications used by branch employees.
D. Apply a stateful firewall policy that only allows traffic sourced from your branch IP address range.

Antwort: D

Begründung:
The correct answer is B . The requirement is to stop branch devices from sourcing traffic using IP addresses that do not belong to the branch. This is a source-address enforcement problem, so the correct control is a stateful firewall policy that permits only traffic whose source IP address matches the valid branch LAN prefix or branch-assigned address range. Versa's stateful firewall configuration documentation explains that firewall policy rules include source matching, where the administrator selects the source zone and one or more source addresses to which the rule applies.
By creating an allow rule for the legitimate branch source prefixes and placing a deny rule for all other sources from the branch LAN zone, the VOS device prevents spoofed or unauthorized source addresses from leaving the branch. This is consistent with Versa security policy behavior, where firewall rules evaluate traffic based on zones, addresses, services, applications, and other match criteria. Captive portal verifies user identity but does not directly prevent IP spoofing. An IP filter profile based on applications does not ensure the source address belongs to the branch. Option D is incorrect because allowing traffic to the assigned LAN range controls destination traffic, while this requirement is about validating the source IP address of outbound branch traffic.

36. Frage
A branch user reports poor throughput over an SD-WAN tunnel. The command show interfaces detail vni-0/0 shows the interface is operating at half-duplex / 100 Mbps , although the circuit is expected to run at 1 Gbps full duplex. What is the most likely cause?

A. The Controller is not advertising branch routes.
B. VXLAN encapsulation is missing on the overlay.
C. SD-WAN SLA probing is disabled.
D. There is an underlay link speed or duplex mismatch.

Antwort: D

Begründung:
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.

37. Frage
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