Versa Networks VNX100 Versa Certified SD-WAN Associate Exam Practice Test

Versa SD-WAN headend components, which include the Versa Controller, Versa Director, and Versa Analytics, offer flexible deployment options. They can be deployed on bare metal servers, as virtual machines, or as a hybrid of both, depending on the scalability needs and the available infrastructure at the data center or cloud environment. This flexibility ensures that Versa SD-WAN can adapt to a variety of enterprise environments and deployment scenarios.​

Versa Analytics, part of the Versa SD-WAN solution, can be deployed on-premises and is not limited to cloud-based installations. This gives enterprises the flexibility to choose where to deploy based on their specific needs, such as compliance or data sovereignty requirements. The Versa Controller, which provides the control plane for the SD-WAN network, supports various deployment options including virtual machines. This flexibility is important for integration into existing data center architectures or for leveraging cloud infrastructures.

Versa CPEs are indeed activated using Zero Touch Provisioning (ZTP), which automates the configuration process and reduces operational complexity. Furthermore, all components of the Versa SD-WAN solution support high availability configurations to ensure continuous operation and minimal disruption in the event of component failures. Versa Director and Versa Controllers can be deployed in redundant configurations, and Versa Analytics can be clustered for resilience and high availability.

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.

The Versa Stateful Firewall feature encompasses a range of security capabilities, including Unified Threat Management (UTM), which may comprise antivirus, IPS, and web filtering services. It also provides Zone Protection, which enforces security policies based on the zones defined in the network to protect network segments. DDoS protection and DUP are also vital security functions, but they are not specified as capabilities within the Stateful Firewall feature set in the documents provided.

In a Versa Analytics cluster, the node personalities include Search and Analytics. These personalities reflect the different roles each node in the cluster plays. The Search nodes are responsible for ingesting and indexing data, enabling fast and efficient search operations, while the Analytics nodes are responsible for processing and analyzing data, providing insights and reports. This separation of duties is key to the operation of a Versa Analytics cluster, ensuring optimal performance and reliability of the analytics platform.

URL-based Zero-Touch Provisioning (ZTP) is an approach where the URL of a Versa Operating System activation website is emailed to the installer at the customer site. The installer then connects a laptop to the Wi-Fi or LAN port of the Versa branch device, clicks on the URL, and completes the provisioning process. This method does not require a console connection and is one of the methods provided by Versa to provision and configure new VOS devices, making the process convenient and straightforward.​

The default load balancing algorithm set in an SD-WAN Forwarding Profile is Weighted Round Robin (WRR). This algorithm assigns weights to each path based on the available bandwidth on the access circuit. WRR is recommended when paths with equal priorities are provisioned with different bandwidths, ensuring that traffic is distributed proportionally to the bandwidth of each path, which optimizes the utilization of network resources and maintains load balancing across the WAN circuits​​.

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.

Versa Director acts as an orchestrator within the Versa SD-WAN ecosystem, providing centralized configuration management and monitoring of controllers, branch sites, and hubsites. It does not function as a log forwarder, BGP route reflector, or VPN concentrator. As an orchestrator, it manages the lifecycle of Versa VOS instances, enabling zero-touch provisioning and other orchestration functionalities through a single pane of glass.

In the architecture of Versa SD-WAN, the control plane plays a crucial role in the discovery and management of network topology:

• SD-WAN topology is discovered using MP-iBGP (Answer B): Versa utilizes Multi-Protocol Interior Border Gateway Protocol (MP-iBGP) for the discovery and management of the SD-WAN topology. This protocol helps in the efficient exchange of routing information within the network, enabling the Versa Director and other network components to maintain an updated view of network topology.
• Versa Private Address Family is used to advertise topology information (Answer C): This unique address family within Versa’s ecosystem is specifically designed to handle and distribute topology information across the network. It ensures that all relevant Versa devices are aware of the network structure and any changes to it.

References:These elements of Versa’s SD-WAN control plane are detailed in the technical specifications and white papers provided by Versa Networks, which explain the underlying mechanisms that support network operations and topology management within Versa’s infrastructure.

Versa Secure Access (VSA) is designed to integrate with various authentication servers, including LDAP, and supports multifactor authentication methods like email and time-based OTP, integrating with authentication applications such as Duo, Google Authenticator, and Microsoft Authenticator. This makes the platform versatile in terms of supporting different enterpriserequirements for user authentication and enhancing security.​

Versa Analytics offers REST APIs that facilitate northbound integration with third-party tools, allowing for enhanced automation and the ability to pull data into external systems for additional processing or visualization. Moreover, it provides real-time traffic monitoringdashboards that deliver visibility into network performance, application usage, and security events, aiding in swift and informed decision-making. These dashboards are crucial for maintaining an overview of the network's current state and rapidly diagnosing issues.​

Versa Analytics offers a suite of features aimed at enhancing visibility and control over SD-WAN networks. The true statements about Versa Analytics are:

• Versa Analytics provides REST APIs for northbound integration with third-party tools (Answer B): Versa Analytics is equipped with REST APIs that facilitate northbound integration, allowing organizations to seamlessly connect and integrate Versa's network data with third-party management, monitoring, and analytics tools. This integration capability is crucial for enterprises that utilize a diverse set of tools for network management and need to consolidate their network operations on a single platform.
• Versa Analytics provides real-time traffic monitoring dashboards (Answer D): One of the key features of Versa Analytics is its real-time traffic monitoring dashboards. These dashboards provide network administrators with live insights into network performance, traffic flows, and usage patterns, enabling them to make informed decisions quickly and effectively manage the network.

Option A (Versa Analytics provides the ability to configure logging parameters on SD-WAN CPEs) is incorrect because while Versa Analytics does involve extensive logging capabilities, the configuration of logging parameters typically occurs at the device or controller level, not within the analytics platform itself. Option C (Versa Analytics provides centralized logging information about the SD-WAN environment) is somewhat misleading; while Versa Analytics does centralize data for analysis, it primarily focuses on providing analytical insights and data visualizations rather than merely centralizing logging information.

References:This explanation is based on the functionalities provided by Versa Analytics as part of the Versa SD-WAN solution, emphasizing its capabilities in network data integration and real-time monitoring.

To implement a third-party application server as a virtual machine on a Versa CPE, the Service Chain Template should be used. This is because the Versa uCPE solution supports service chaining capabilities which are necessary for steering traffic to and from third-party virtual network functions (VNFs) to Versa Operating System (VOS) instances. The Versa uCPE solution can manage the lifecycle of third-party VNFs, including the ability to bring up an out-of-band management interface for each VM, connecting it to the Versa secure management channel, and routing management and control plane traffic accordingly​​.

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.​

To ensure that a new CPE deployment has the required version of the Versa Operating System:

• Select preferred software version to 20.2.2 in the Device Bind Data (Answer C): Device Bind Data in Versa Director is the correct place to specify the operating system version for CPE devices. This configuration ensures that when devices are bound to their respective templates and workflows, they automatically fetch and load the specified software version, which in this case is 20.2.2.

References:This procedure aligns with Versa's deployment guidelines which stipulate that device-specific settings such as operating system versions should be managed through device bind settings to ensure consistency and compliance with organizational standards. This is detailed in the Versa deployment manuals which emphasize the importance of precise configuration in device bind data to maintain software uniformity across deployed devices.

A security pack (SPack) within Versa VOS includes predefined objects such as anti-virus definitions, URL categories and reputations, and IDS/IPS signature definitions. These are components of Versa VOS's unified threat management capabilities, which are utilized toprotect the network against security threats. Operating system security updates and Versa Analytics security updates are not mentioned as part of the SPack predefined objects in the provided documents.

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.