VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

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Why might LACP packets not be sent between deployed ESXi hosts connected to a vSphere Distributed Switch?

  1. LACP is not enabled on the vCenter Server.

  2. The LACP support settings do not exist in the host profile.

  3. The LACP installation bundle is not included in the image profile.

  4. LACP has not been configured on the Auto Deploy server.

The correct answer is: The LACP support settings do not exist in the host profile.

In the context of vSphere Distributed Switch (VDS) and Link Aggregation Control Protocol (LACP), the reason LACP packets might not be sent between deployed ESXi hosts is closely related to the absence of LACP support settings in the host profile. Host profiles are a mechanism to standardize host configurations across a cluster, and they allow administrators to enforce consistent networking parameters, including settings for LACP. When LACP support settings are missing from the host profile, the configurations necessary for LACP to operate correctly and negotiate link aggregation between ESXi hosts may not be applied. This can prevent the proper establishment of LACP links, which relies on these specific settings for communication and packet exchange. Therefore, if these settings do not exist, the devices will not know to send or receive LACP packets, leading to their absence in the network traffic. In contrast, enabling LACP on the vCenter Server, missing installation bundles, or configuration issues related to the Auto Deploy server pertain to broader platform or server configurations rather than the specific function of managing and enforcing LACP settings on individual hosts. While these factors play a role in the overall deployment and management of ESXi hosts and networking components, they do not directly influence the operational readiness of LACP