VNX100 Exam Dumps - Versa Networks Administrator SD-WAN Associate Questions and Answers

Versa Analytics and Versa Director support REST APIs, which allow integration with third-party applications and systems. The REST APIs provided by these components enable automation and programmability for various network management and analytics functions. Versa Controller and Versa CPE are not referenced in the provided documents as supporting REST APIs directly, although they interact with Versa Director, which does.​

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.​

Versa Secure SD-WAN features multitenancy, allowing multiple tenants to be managed within the same infrastructure with complete isolation and privacy. Additionally, it offers Role-Based Access Control (RBAC) to define and limit the permissions and access for users based on their roles within the organization. Versa also provides single-pane-of-glass management with embedded analytics, offering a consolidated view for managing, monitoring, and analyzing the SD-WAN infrastructure and traffic. This unified management approach simplifies administrative tasks and provides deep insights into the network and security operations.

In a scenario where a device is onboarded with two Internet interfaces and Direct Internet Access (DIA) is being configured, the following statements hold true:

• Each underlay interface belongs to its own VR instance (Answer B): Typically, in Versa SD-WAN configurations, each underlay interface is assigned to its own virtual router (VR) instance. This approach allows for greater flexibility and isolation in managing routing and security policies specific to each interface. It supports independent operation and control, which is crucial for optimizing performance and security management.
• Both Internet interfaces can be selected for DIA in workflows (Answer C): In Versa workflows, it is possible to configure both Internet interfaces for DIA. This configuration enhances redundancy and ensures that there is always an active path for Internet access, which is critical for maintaining high availability and network resilience.

The option A (All underlay interfaces belong to the same VR instance) is not typically true in complex deployments where separation of control and data planes is required for better management and security. Option D (Only one Internet interface can be selected for DIA in workflows) is incorrect because Versa SD-WAN allows multiple interfaces to be configured for DIA to leverage failover and load-balancing capabilities.

References:This explanation is based on the standard practices of deploying Versa SD-WAN solutions, where the architecture supports multiple virtual routers and the capability to configure multiple interfaces for DIA.

The SLA profile shown in the exhibit appears to be set with thresholds for various metrics such as jitter, packet loss, and latency. These thresholds determine the acceptable performance criteria for the network. The profile is configured with specific maximums for packet loss, both in the forward and reverse directions, and for latency. If any of these configured values are exceeded, the SLA profile is triggered, indicating a breach of the desired service level agreement parameters. Therefore, if the packet loss value exceeds the maximum set in the profile, it will trigger an event or alert, which can then be used for remediation or for activating pre-defined traffic steering rules to maintain application performance.

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​​.

Versa CPEs support a variety of Quality of Service (QoS) functions to ensure effective bandwidth management and priority handling of network traffic. The three functions supported are:

• Hierarchical queuing (Answer B): This QoS function allows for the creation of a multi-level queue structure, enabling more granular control of traffic prioritization and bandwidth allocation among various traffic classes.
• Egress policing (Answer C): This involves setting maximum bandwidth limits for outbound traffic on network interfaces to prevent any traffic class from consuming excessive bandwidth and impacting the performance of other critical applications.
• Classification (Answer D): This is the process of marking packets based on predefined criteria, which can include source or destination IP addresses, ports, or application types. Classification is essential for applying the appropriate QoS policies to different types of traffic.

References:These functionalities are extensively described in Versa’s configuration manuals, where the setup and implications of each QoS feature are discussed, ensuring optimal network performance and adherence to organizational policies.

When a customer has a single Versa Analytics cluster deployed in a data center with the Versa Director and Versa Controller nodes distributed between the data center and disaster recovery sites, and the data center goes down for one day, logging and reporting will be lost during the one-day downtime (D). Versa Analytics plays a crucial role in collecting, processing, and presenting data for monitoring and reporting purposes. Its deployment in a single data center without active redundancy means that its failure or unavailability directly impacts the network's ability to perform logging and generate reports. However, the SD-WAN CPE live monitoring (A), the deployment of new SD-WAN CPE (B), and the reachability between SD-WAN CPE (C) could still be maintained through the remaining operational elements of the SD-WAN architecture, assuming that the Versa Director and Versa Controller can still manage the network despite the loss of analytics capabilities​​.