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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Versa SD-WAN Infrastructure | 20% | - Edge device management and deployment - Versa Director components and functions - Versa Controller and Analytics |
| Topic 2: SD-WAN Services and Policies | 15% | - Application steering and traffic policies - SLA monitoring and link optimization - QoS and bandwidth management |
| Topic 3: Configuration and Provisioning | 15% | - Zero-touch provisioning - Service deployment and onboarding - Template-based configuration |
| Topic 4: Network Topologies and Routing | 15% | - Routing protocols and path selection - High availability and redundancy - Hub-and-spoke, full-mesh, hybrid topologies |
| Topic 5: Underlay and Overlay Technologies | 20% | - Overlay architecture and concepts - Underlay network design and requirements - Overlay connectivity and tunneling |
| Topic 6: Operations and Troubleshooting | 5% | - Diagnostics and problem resolution - Monitoring and logging |
| Topic 7: Security Services | 10% | - VPN and encryption - Integrated firewall and IPS - Segmentation and threat protection |
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問題 #56
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?
答案：B
解題說明：
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.
問題 #57
A branch device is stuck after staging. The Controller does not show the expected branch lifecycle notification. Which statement best describes the role of MP-BGP in the provider organization for this process?
答案：D
解題說明：
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.
問題 #58
A branch device is powered on with factory-default staging configuration. The device establishes an IKE session to the staging server and receives an IP address, but it does not proceed to establish an IKE session with the Versa Controller. Which staging phase is failing?
答案：A
解題說明：
The correct answer is B . In Versa SD-WAN onboarding, the branch progresses through three staging phases.
In Stage 1 , the branch uses its factory-default configuration to start an IKE session with the staging server.
After the IKE session comes up, the staging server assigns an IP address to the branch and notifies the branch of the Versa Director IP address. Versa Director is also notified that the branch has come up.
In Stage 2 , Versa Director pushes the stage-two configuration to the branch through the staging server. This stage changes the IPsec profile so that the Controller IP address becomes the remote IP. The branch reboots and then attempts to establish the IKE session with the Controller. If the device successfully completed Stage
1 but never forms the Controller IKE session, the failure point is Stage 2.
Stage 3 is later, when the device receives stage-three configuration, becomes operational, and creates Controller IPsec plus branch-to-branch VXLAN/ESP sessions. Therefore, the described issue is a Stage
2 staging failure.
問題 #59
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：D
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 #60
A Versa Director operator wants to monitor CPU, memory, disk, recent events, uptime, HA status, package information, and license details from the Director GUI. Which top-level tab should be used?
答案：C
解題說明：
The correct answer is A . Versa documentation states that from a Director node, administrators can monitor the Director node itself, provider organizations, tenants, and VOS devices. The procedure begins by selecting the Monitor tab in the top menu bar. When a Director node is selected, the monitor screen displays panes such as System Detail , Recent Events , Package Information , Uptime , High Availability , and License .
This view is intended for operational monitoring and troubleshooting. It allows administrators to see system resource status, recent alarms and events, software package details, uptime, HA configuration, and licenses installed on managed VOS devices.
Workflows are used for provisioning and template-based configuration, not monitoring these system panes. Analytics Search is useful for querying logs and flow records, but it is not the Director system- monitoring screen described in the question. Administration > Connectors relates to integration and resource connectivity rather than Director node health and license monitoring. Therefore, the correct location is the Monitor tab.
問題 #61
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