VNX100 Premium Exam Questions

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​​.