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

To identify and diagnose intermittent network performance issues that occurred in the past,Versa Analytics dashboards (Answer B)are the most suitable component. Versa Analytics provides deep insights into historical data, enabling network administrators to analyze trends, performance metrics, and potential bottlenecks that occurred previously. The dashboards offer a comprehensive view of the network's operational performance over time, allowing for effective troubleshooting of issues that are not currently manifesting but did impact users in the past.

References:Versa Analytics dashboards are specifically designed to handle retrospective and real-time network data analysis, making them an essential tool for diagnosing past issues as described in Versa's official documentation on network analytics and performance monitoring.

The Direct Internet Access (DIA) option in the configuration of split tunnels for an SD-WAN device, as shown in the exhibit, is a feature that allows traffic destined for the internet to bypass the SD-WAN overlay network and be sent directly out of the local branch’s internet connection. This can significantly improve access to cloud services andinternet performance by reducing latency and avoiding backhauling traffic through the corporate data center or another central location.

When DIA is enabled, traffic that is destined for the internet does not traverse the SD-WAN overlay network; instead, it is routed directly from the branch to the internet. The SD-WAN appliance can still enforce security policies on this traffic, and it can also be programmed to dynamically decide whether to use the DIA path based on real-time performance metrics and other criteria.

By implementing the BGP default route advertisement into the local LAN Virtual Routing and Forwarding (VRF) of the tenant, the SD-WAN appliance advertises a default route to the local site. This allows the site to route internet-bound traffic directly to the internet without having to send it across the SD-WAN network. This eases the internal network traffic load and can potentially reduce costs associated with data transmission over the corporate WAN.

References:The explanation provided above aligns with standard SD-WAN architecture and practices for configuring split tunnels and the use of Direct Internet Access in SD-WAN environments.

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.​

Versa Analytics has the capability to not only generate customized daily reports on bandwidth usage for all sites in the network but also to schedule these reports to be sent via email. This function allows administrators to receive reports without having to log into the Versa Analytics portal, streamlining the process and ensuring that they have the necessary information on a regular basis​​.

In a Versa Secure SD-WAN solution, the hub controller plays a multifaceted role that is crucial for the efficient and secure operation of the network. Three of the primary functions of a hub controller include CPE lifecycle management, acting as a control plane node, and providing visibility and control.

CPE Lifecycle Management (A): The hub controller is instrumental in managing the lifecycle of Customer Premises Equipment (CPE). This includes tasks such as configuration, maintenance, updates, and troubleshooting. This management capability ensures that the CPEs are always operating with the latest security patches, configurations, and software versions, thereby maintaining the security and efficiency of the network.

Control Plane Node (B): The hub controller also serves as a control plane node. It is responsible for maintaining the routing information and ensuring the efficient distribution of this information across the network. This includes handling BGP routes toward VPNsand tenants, distributing security association (SA) information, and enabling IPsec connectivity between branches without the overhead of maintaining a full mesh of IKE keys among all branches​​.

Visibility and Control (D): Finally, the hub controller provides visibility and control over the network. This includes monitoring the network's health, traffic management, and implementing security policies. By offering a centralized point of visibility and control, the hub controller enables network administrators to effectively manage and secure the network.

The hub controller's role as a data plane node (C) is not explicitly mentioned among its primary functions, as it is more involved in the control and management aspects of the network rather than direct data forwarding. Similarly, acting as a staging server (E) is not listed as one of its primary roles in the documentation reviewed.

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.​

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 a Versa Secure SD-WAN solution configured with a Full Mesh topology, the true statement is that CPE devices send SLA probes on all possible transport paths between devices (B). This approach ensures any-to-any communication among branches, enabling direct communication using overlay tunnels without the need to transit through a hub or centralized site. SLA monitoring probes are utilized to track reachability and to measure link metrics for each access circuit towards any given remote site. These probes are critical for maintaining high-quality communication paths and for implementing traffic steering based on predefined SLA parameters​​.

A Versa Analytics reporting view provides the capability to send reports by email, generate reports periodically, and create custom reports. This means administrators can set up automated report generation to be received at specific intervals, providing insights into the network's performance and security posture. These reports can be tailored to specific needs through custom report creation, ensuring relevant data is highlighted and presented as required.

The Versa Secure SD-WAN Head-end consists of the Versa Controller, Versa Director, and Versa Analytics. However, when referring to headend nodes as components, the Versa Director and Versa Analytics are part of it. The Versa Controller, while an integral part of the SD-WAN control plane, is not listed under 'Headend Node' in the provided documentation. The Versa Director and Versa Analytics work in conjunction to manage a network of VOS devices, with the Director being the provisioning and management application and Analytics providing the analytics engine. Versa Gateway is not mentioned as part of the head-end components in the context provided.​