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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Versa SD-WAN Architecture & Components | 20% | - Branch CPE deployment modes - Controller architecture (Versa Director, Analytics) - Device roles: Controller, CPE, Analytics - Versa Operating System (VOS) architecture |
| Topic 2: Security Services | 15% | - Threat protection and IPS/IDS - ZTNA / micro-segmentation - URL filtering and DNS security - Integrated firewall capabilities |
| Topic 3: Monitoring & Troubleshooting | 10% | - SLA monitoring and reporting - Common troubleshooting scenarios - Log analysis and debugging - Versa Analytics dashboards |
| Topic 4: Management & Orchestration | 15% | - Zero-touch provisioning (ZTP) - Service chaining - Versa Director configuration and workflows - Device provisioning and templates |
| Topic 5: Versa FlexVNF Features & Configuration | 25% | - Traffic steering and path selection - WAN interface configuration and bonding - QoS and traffic shaping - In-band network telemetry - Application-aware routing |
| Topic 6: SD-WAN Fundamentals | 15% | - Underlay vs overlay networking - SLA-based routing principles - Transport independence - WAN virtualization concepts |
>> Versa Networks VNX301 PDF題庫 <<
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問題 #28
You configured a Versa speed-test server on a VOS device, but the client cannot start the bandwidth test. A firewall exists between the client and server. Which port must be allowed through the firewall?
答案：D
解題說明：
The correct answer is A . Versa link-bandwidth troubleshooting documentation explains that a VOS device can be configured as a Versa speed-test client, a Versa speed-test server, or both simultaneously. After the server is configured, the client starts the test by initiating a TCP-based connection toward the speed-test server. The server listens on port 5201 . The documentation includes an explicit note that if the VOS device is behind a firewall, port 5201 must be open .
This is different from the SD-WAN overlay data path, which commonly uses UDP-based transport encapsulation, and different from internet speed-test traffic, which uses other ports depending on the specific test type. In this scenario, the question states that a Versa speed-test server was configured, so the relevant requirement is TCP 5201 reachability from the client to the server.
TCP 443 may be used for management or web access, UDP 4790 is associated with SD-WAN transport encapsulation, and UDP 53 is DNS. None of those replace TCP 5201 for Versa speed-test server operation.
問題 #29
Examine the exhibit below.
Referring to the exhibit, which two statements are correct? (Choose two.)
答案：B,D
解題說明：
The correct answers are A and B . In the exhibit, the LAN interface shows a fixed VLAN ID value of 100 .
Because this value is directly configured in the template rather than represented as a per-device variable, every branch that uses this template will receive the same LAN VLAN ID. This supports option A. Versa configuration examples show that VLAN-tagged interfaces are created by defining logical units with a vlan- id, and organizations then use those tagged interfaces for traffic identification and routing services.
For the MPLS WAN network , the VLAN ID field is shown as a variable or bind-data style value rather than a fixed number. This allows each branch device to receive a different MPLS VLAN ID during onboarding, depending on the branch-specific values supplied in the workflow or device bind data. Therefore, branches can have separate VLAN IDs on the MPLS WAN transport, which supports option B. Versa SD-WAN troubleshooting output also shows WAN interfaces as logical VNI subinterfaces, such as vni-0/1.0 and vni-0/2.
0, mapped to SD-WAN transport networks like INET and MPLS.
Option C is incorrect because an INET interface can be untagged, commonly represented with VLAN ID 0. Option D is incorrect because the MPLS VLAN field is intentionally parameterized, not incorrectly configured.
問題 #30
A branch device has completed Stage 3 onboarding. Which set of tunnels or sessions should exist after the device becomes fully operational in the customer SD-WAN network?
答案：A
解題說明：
The correct answer is A . In Versa Secure SD-WAN onboarding, the branch moves through three staging phases before becoming fully operational. Versa documentation states that in Stage 3 , Versa Director pushes the stage-three configuration to the branch device over the IKE session and reboots the branch. After this stage, the branch becomes fully operational and is part of the customer SD-WAN network. At this point, IKE and IPsec sessions are created between the branch and Controller , and VXLAN and ESP sessions are created between branch to branch .
This distinction is important because the Controller connection is used for SD-WAN control-plane functions, while branch-to-branch overlay communication uses tunnel encapsulation for data forwarding. The documentation also notes that branch-to-branch ESP is maintained using a lightweight DH key-pair proprietary protocol.
Options B, C, and D are incorrect. HTTPS to Director alone does not represent the complete SD-WAN operational tunnel state. BGP to Analytics is not the required operational tunnel set. GRE-only tunnels without IPsec do not match the Versa Stage 3 SD-WAN tunnel behavior described in the staging documentation.
問題 #31
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?
答案：C
解題說明：
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.
問題 #32
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?
答案：B
解題說明：
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.
問題 #33
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