Pass the Versa Networks Administrator SD-WAN Associate VNX100 Questions and answers with ExamsMirror

In a spoke-to-hub-only topology, the only prefixes advertised by default are the hub routes, and the spoke routes are not re-advertised by the hub branch. This topology is used when spokes do not have to communicate with each other, and a classic example is a network of ATM cashmachines where devices communicate exclusively with resources in the customer data center. The spoke devices, in this case, can send traffic only to networks behind the hub and not to other spokes directly or through the controller.

The roles of a Versa Controller include onboarding SD-WAN VOS branches into the network and maintaining a secure control channel with each node. The Versa Controller authenticates branch VOS instances, handles management activities between the remote and headend nodes, and distributes control plane information. It does not provide Internet breakout, which is a function typically performed by edge devices at the branches themselves, nor does it provide clock synchronization to the branches, which is generally a function of network protocols like NTP that operate independently of SD-WAN control.​

Within the Device Template workflow, you can configure various settings that dictate how the SD-WAN devices will behave in the network. While specific port numbers like WAN/LAN ports and serial numbers are usually predefined hardware attributes and not set via templates, Device Group classification and Direct Internet Access configurations are part of the template workflow. Device Groups help in classifying devices for easier management, and Direct Internet Access (DIA) settings determine how internet traffic will be handled, allowing for traffic to bypass central gateways and go directly to the internet, which can be crucial for optimizing the network performance.

The provisioning of Versa SD-WAN CPE devices can be accomplished through multiple methods, including:

URL-based provisioning (Answer B): This method involves directing the CPE to a URL where it can download configuration files automatically. This is an efficient way to provision devices remotely and is widely used for initial device setup and configuration.

Script-based provisioning (Answer C): This method allows network administrators to use scripts to automate the configuration process of CPEs. Scripts can be customized to apply specific configurations and policies based on the deployment requirements.

References:Both URL-based and script-based provisioning are standard practices detailed in Versa's deployment guides, which provide step-by-step instructions on using these methods for efficient and scalable CPE deployments.

To apply a new URL filtering profile across all of the SD-WAN CPEs in response to a security event, you would use the Next Generation Firewall (NGFW) Template. This template is specifically designed to handle security functions, including application control, intrusionprevention, and URL filtering. By using the NGFW Template, you can enforce URL filtering policies that block or allow traffic based on URLs and categories, which is integral to controlling access to websites and ensuring network security​​.

In a remote Versa branch, the Control Virtual Router (Control VR) is the routing instance that has the default route to reach the Versa head-end components. This Control VR is typically dedicated to carrying control plane traffic between branch nodes and the SD-WAN controller, facilitating secure communications essential for the management and operation of the SD-WAN network.

A Versa Workflow is a process within Versa Director that automates the creation or modification of objects, such as device templates, policies, and service profiles. Workflows streamline complex configurations, guiding administrators through a series of steps to configure devices, apply policies, and set up services across the SD-WAN infrastructure. It simplifies and accelerates the deployment and management of the SD-WAN solution.

When a speed test fails, it could be due to the speed test module not being activated or the speed test server not being enabled at the remote site. If the speed test module has not been activated, the required functionality to conduct the test will not be operational. Similarly, if the remote site does not have the speed test server enabled, it won't respond to speed test requests. Issues with the SLA path status or client configuration might be relevant to the performance and reachability but are not cited as direct reasons for a speed test failure within the documentation provided.

When a CPE device appears in the unknown device list in Versa Director Inventory during Zero Touch Provisioning (ZTP), it typically indicates a discrepancy in device identification details. Specifically,the device workflow configuration not having the correct serial number of the CPE defined (Answer C)can lead to this issue. The workflow configuration must accurately include the serial number so that Versa Director can recognize and authenticate the device as part of the organization’s network infrastructure. If the serial number in the workflow configuration does not match the serial number of the actual device, the Director will not be able to properly identify and classify the device, thus placing it in the unknown device list.

References:Versa’s official documentation on ZTP outlines the importance of accurate device identifiers in the workflow configuration to ensure successful device onboarding and recognition by the Versa Director.

In the event of a network outage, to verify the live status of the WAN links, Versa Director device monitoring dashboard and Versa Analytics sites availability dashboard are the tools to use.These components provide real-time visibility into the status and health of WAN links, allowing for rapid identification and troubleshooting of connectivity issues.​