Versa Networks Updated VNX100 Exam Questions and Answers by adyan

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.

When changes to a device configuration are made in the Versa Director through templates, it is crucial to ensure that these changes propagate to the actual branch device. The correct steps involve:

• Committing the Device Template configuration to the appliance (Answer B): This step is necessary because any changes made in the device template need to be actively committed to ensure they are pushed to the specific branch device orappliances that are associated with this template. This action updates the appliance with the latest configuration details, including the static IP address changes for the WAN link.
• Updating the Device Bind Data in Workflows with the IP address and gateway of the Internet WAN link (Answer D): This involves updating the binding configurations that specifically tie device templates to actual hardware or site-specific configurations. It is essential when changes such as IP addressing are involved, as the binding data must accurately reflect the network topology and addressing used by the devices.

References:The detailed steps and necessity for these actions are derived from standard Versa SD-WAN configuration practices as reflected in the comprehensive Versa configuration manuals and best practices documents available through Versa Networks Academy Library and configuration guides.

Site discovery within Versa Secure SD-WAN operates under the premise of dynamic and automated networking capabilities. The correct statement about site discovery is:

When a new site is provisioned, existing sites auto-discover the new site using MP-BGP (Answer D).In Versa SD-WAN, Multiprotocol Border Gateway Protocol (MP-BGP) is employed for dynamic routing information exchange, which includes the discovery of new sites. When a new site is added to the network, MP-BGP facilitates the automatic dissemination of routing information to other sites, thus enabling them to auto-discover the new site without manual reconfiguration.

• Option A suggests manual addition, which contradicts the automated capabilities of SD-WAN.
• Option B and C imply manual notifications or reconfigurations by Versa Director or Controller, which are not the primary methods for site discovery in an SD-WAN environment where automation via MP-BGP is preferred.

References:The response utilizes the operational mechanisms of Versa SD-WAN as described in Versa’s official documentation and typical behaviors of MP-BGP in dynamic network environments.

In SD-WAN policy rules, two parts used to steer traffic are Schedules and Applications. Schedules allow administrators to define when certain policy rules should be active, effectively determining the timing for when traffic steering decisions should be applied. Applications, on the other hand, enable traffic steering decisions based on the type of application traffic being detected. This allows for more granular control and optimization of traffic flows based on application requirements and characteristics​​.