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| Certification Vendor: | Versa Networks |
|---|---|
| Exam Name: | Versa Certified SD-WAN Specialist |
| Exam Number: | VNX301 |
| Passing Score: | 70% |
| Exam Price: | USD 250 |
| Real Exam Qty: | 60 |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple Choice, Multiple Select |
| Exam Duration: | 90 minutes |
| Related Certifications: | Versa Certified SD-WAN Expert |
| Available Languages: | English |
| Sample Questions: | Versa Networks VNX301 Sample Questions |
| Exam Way: | Online proctored exam at Pearson VUE test centers |
| Pre Condition: | Recommended: Basic networking knowledge (CCNA/equivalent), familiarity with WAN technologies and enterprise network design |
| Official Syllabus URL: | https://www.versa-networks.com/partners/training-certification.html |
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NEW QUESTION # 16
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?
Answer: A
Explanation:
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.
NEW QUESTION # 17
A branch using DIA with CGNAT reports that new internet sessions intermittently fail. CGNAT pool counters show increasing out-of-ports errors, while out-of-address errors remain zero. What is the most likely problem?
Answer: A
Explanation:
The correct answer is A . Versa CGNAT troubleshooting documentation includes per-pool and resource counters that show allocation behavior and failures. The counters include values such as bindings allocated, bindings freed, allocation failures, out-of-address errors, and out-of-ports errors. It also shows that CGNAT source-port resources are divided and distributed to worker threads by Versa RFD/RFM, and that allocated source-port ranges can be viewed using show rfm table src-port allocated.
If out-of-ports errors increase while out-of-address errors remain zero, the pool still has usable translated IP addresses, but the available port resource for NAT bindings is exhausted. This commonly occurs when too many concurrent sessions share a limited public IP or source-port range. The corrective action would be to expand the NAT resource, add more public translated IPs, adjust port allocation, or reduce excessive session usage.
A missing NAT IP pool would more likely produce out-of-address problems. A wrong zone match might prevent translation entirely, and OSPF in the LAN VR is unrelated to CGNAT port-resource exhaustion.
NEW QUESTION # 18
A branch has correct underlay speed and no asymmetric SD-WAN paths, but users still report packet loss during large transfers. You suspect QoS shaping is dropping traffic. Which command is most appropriate to verify interface-level CoS drops?
Answer: B
Explanation:
The correct answer is A . Versa throughput troubleshooting documentation includes a specific section titled Check that Packets Are not Dropped by CoS . It states that if a CoS shaper or rate limiter is configured on the VOS device, it may drop packets when traffic exceeds the configured shaping rate. To check whether CoS is dropping packets, Versa recommends commands including show class-of-services interfaces brief and show class-of-services interfaces detail interface-name.
The detailed interface output displays traffic statistics such as TX packets, TX packets dropped, TX bytes, TX bytes dropped, and per-traffic-class drops. This is exactly the evidence needed to confirm whether shaping or QoS enforcement is causing the observed loss.
show alarms last-n 10 may reveal major events but will not provide per-interface CoS drop counters.
show system uptime only indicates how long the system has been running. show cgnat tenants is relevant for NAT state and tenant CGNAT resources, not QoS drops.
NEW QUESTION # 19
During onboarding, Versa Director shows the first branch-connect notification for a new CPE, but no later staged branch-connect notification appears. Which troubleshooting area should be investigated first?
Answer: A
Explanation:
The correct answer is B . Versa branch lifecycle notifications are generated at different stages of onboarding.
The first notification indicates that the branch connected using factory-default configuration. After that notification, Versa Director pushes the staging configuration to the branch and requests a reboot. After rebooting with staging configuration, the branch should connect again to the Controller, and a later branch- connect notification should appear.
If this later staged connection notification does not appear, Versa's troubleshooting guidance says to debug either the data path or IPsec connectivity from the branch to the Controller. This makes sense because the branch must have working transport reachability and IKE/IPsec establishment toward the Controller before it can continue the SD-WAN lifecycle.
Analytics disk usage, LDAP authentication, and URL filtering are not part of the branch staging control path. They may affect monitoring, user identity, or security inspection after the site is operational, but they do not explain why the branch stops after the initial factory-default onboarding notification.
NEW QUESTION # 20
You are configuring a CGNAT rule for branch internet access and want to verify which access-list entry will match traffic before translation. Which information is shown by the CGNAT ACL command?
Answer: A
Explanation:
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.
NEW QUESTION # 21
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