VMware SD-WAN Design and Deploy Skills Free Sample Questions

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5V0-42-21 Sample Questions

  1. Question 1

    A global logistics company is deploying VMware SD-WAN to 300 warehouses. Each warehouse has a primary broadband link and a backup LTE link. The company's primary requirement is to ensure that Point-of-Sale (PoS) transaction data, which is highly sensitive to latency and jitter, is always routed over the link with the best real-time performance metrics. All other traffic should use the broadband link unless it fails. Which Business Policy configuration is the most effective way to achieve this?

    Answer and explanation

    Correct answer: D

    The most effective method is to create a Business Policy for the PoS application traffic and set the Link Steering to 'Mandatory' while selecting both available links. This activates Dynamic Multipath Optimization (DMPO) for that traffic class. DMPO will continuously monitor both links for latency, jitter, and loss, and it will steer the PoS traffic on a per-packet basis to the link that provides the best performance at any given moment, fulfilling the core requirement. Other methods do not guarantee routing based on real-time performance.

  2. Question 2

    An architect is designing a VMware SD-WAN solution for a hospital's primary data center. The design requires that in the event of a primary Edge failure, all active traffic sessions, including stateful firewall connections and active VoIP calls, must fail over to the secondary Edge with no disruption. Which High Availability (HA) deployment mode must be specified in the design?

    Answer and explanation

    Correct answer: B

    Enhanced High Availability (HA) is the only mode that provides stateful failover. In this mode, the active and standby Edges continuously synchronize flow and session information. This ensures that upon a failure of the active Edge, the standby Edge can take over immediately without dropping existing sessions, which is critical for stateful applications like firewalls and real-time traffic like VoIP.

  3. Question 3

    A network administrator needs to establish a secure VPN tunnel from a VMware SD-WAN branch to a partner's data center, which uses a third-party (non-VMware) firewall as its VPN endpoint. Which VMware SD-WAN Cloud VPN topology is designed specifically for this use case?

    Answer and explanation

    Correct answer: C

    The 'Branch to Non-VMware SD-WAN Site' topology is specifically designed to build standard IPsec tunnels between a VMware SD-WAN Edge and a third-party device like a firewall or router that is not part of the VMware SD-WAN fabric. This allows for secure interoperability with legacy or partner networks.

  4. Question 4

    A deployment engineer is activating a new VMware SD-WAN Edge 620 at a remote office. The office has no local IT staff. The engineer has configured the Edge in the Orchestrator and shipped it to the site. What is the only piece of information the on-site contact needs to provide to the engineer over the phone to complete the activation process?

    Answer and explanation

    Correct answer: D

    For Zero-Touch Provisioning (ZTP), the on-site contact simply needs to plug in the Edge and connect it to the internet. The engineer will then send an activation email containing a unique activation URL. The on-site contact clicks this link from a device on the local LAN, which directs the Edge to the correct Orchestrator to download its configuration and complete the activation. The URL is the key component that links the physical device to its cloud-managed configuration.

  5. Question 5

    A university wants to provide internet access for students on a guest Wi-Fi network. The security policy mandates that this guest traffic must be completely isolated from the university's administrative network traffic and must be routed directly to the internet without traversing the data center. Which VMware SD-WAN feature provides the most scalable and secure method for this segmentation?

    Answer and explanation

    Correct answer: C

    Segments are the superior feature for this requirement. They provide true logical, end-to-end network isolation with separate routing tables and firewall policies per segment. While VLANs provide Layer 2 separation at the branch, Segments extend this isolation across the entire WAN fabric, ensuring guest traffic can never reach the administrative network. A Business Policy can then be applied to the guest segment to enforce the direct internet breakout.

  6. Question 6

    True or False: The VMware SD-WAN Controller is responsible for running the Deep Application Recognition (DAR) engine to classify traffic flows.

    Answer and explanation

    Correct answer: B

    This statement is false. The Deep Application Recognition (DAR) engine runs on the VMware SD-WAN Edge, not the Controller. The Edge performs deep packet inspection locally at the branch to identify and classify applications, enabling business policies to be applied directly at the source.

  7. Question 7

    Multiple answers

    An administrator is configuring a Business Policy to de-prioritize large file transfers initiated from a specific subnet (192.168.50.0/24). The administrator has created a rule that matches the source subnet. Which two actions should be configured in the policy to achieve this goal? (Select TWO).

    Answer and explanation

    Correct answers: B, D

    Setting the Priority to 'Low' ensures that this traffic will be queued behind High and Normal priority traffic during periods of congestion.

    Enabling Rate Limiting provides a hard cap on the amount of bandwidth this traffic can consume, effectively de-prioritizing it by preventing it from saturating the link.

  8. Question 8

    A consultant is reviewing a proposed VMware SD-WAN design for a manufacturing company. The design shows a hub-and-spoke topology where all 50 factory branches connect to a single data center hub Edge. The hub Edge is a single virtual appliance. The company's primary concern is the resilience of the hub site. What is the most significant design flaw in this proposal?

    Answer and explanation

    Correct answer: C

    The most significant flaw is the lack of redundancy at the hub site. A single hub Edge creates a massive single point of failure; if that Edge fails, all 50 factory branches will lose connectivity to the data center. A resilient design would require a High Availability (HA) pair of Edges at the hub.

  9. Question 9

    A financial firm is deploying VMware SD-WAN Gateways as virtual appliances in their private cloud, which runs on KVM. The security team requires that the gateways be deployed in a cluster for redundancy. Which VMware component is used to manage the lifecycle and configuration of these Partner Gateways?

    Answer and explanation

    Correct answer: D

    The VMware SD-WAN Orchestrator is the centralized management plane for the entire SD-WAN solution. This includes the deployment, configuration, monitoring, and lifecycle management of all components, including Partner Gateways deployed on-premises on hypervisors like KVM.

  10. Question 10

    During a VMware SD-WAN deployment, an engineer must choose an authentication mode for new Edges. The company has a robust internal PKI and a security policy that mandates all network devices must use certificate-based authentication. Which Edge Authentication mode must be configured in the Orchestrator?

    Answer and explanation

    Correct answer: C

    The 'Certificate Enabled' mode enforces mandatory certificate-based authentication for all Edges. When this mode is active, an Edge will not be able to connect to the SD-WAN fabric unless it presents a valid certificate signed by a trusted Certificate Authority configured in the Orchestrator. This meets the strict security requirement.

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