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2V0-21.23 · Question #3

An administrator successfully installs VMware ESXi onto the first host of a new vSphere cluster but makes no additional configuration changes. When attempting to log into the vSphere Host Client using

The correct answer is A. Ensure a DNS A Record is created for the VMware ESXi host on the corporate DNS servers. C. Update the VMware ESXi Management Network IPv4 configuration to use a static a IPv4 E. Set the value of the VMware ESXi Management Network VLAN ID to 10.. The error message "Server Not Found" when accessing a newly installed ESXi host via FQDN indicates that basic network configuration and DNS resolution are missing.

Installing, Configuring, and Setup

Question

An administrator successfully installs VMware ESXi onto the first host of a new vSphere cluster but makes no additional configuration changes. When attempting to log into the vSphere Host Client using the Fully Qualified Domain Name (FQDN) of the host, the administrator receives the following error message:

"Server Not Found - We can't connect to the server at esxi101.corp.local." The following information has been provided to complete the configuration:

Host FQDN: esxi101.corp.local Management VLAN ID: 10 DHCP: No Management IP Address: 172.16.10.101 / 24 Management IP Gateway: 172.16.10.1 Corporate DNS Servers: 172.16.10.5, 172.16.10.6 ONS Domain: corp.local In addition, all host configurations must also meet the following requirements:

  • The management network must use only IPv4 network protocols.
  • The management network must be fault tolerant.

Which three high level tasks should the administrator complete, at a minimum, in order to successfully log into the vSphere Host Client using the FQDN for esxi101 and complete the configuration? (Choose three.)

Options

  • AEnsure a DNS A Record is created for the VMware ESXi host on the corporate DNS servers.
  • BUpdate the VMware ESXi Management Network DNS configuration to use the corporate DNS
  • CUpdate the VMware ESXi Management Network IPv4 configuration to use a static a IPv4
  • DConfigure at least two network adapters for the VMware ESXi Management Network.
  • ESet the value of the VMware ESXi Management Network VLAN ID to 10.
  • FDisable IPv6 for the VMware ESXi Management Network.

How the community answered

(24 responses)
  • A
    79% (19)
  • B
    4% (1)
  • D
    4% (1)
  • F
    13% (3)

Why each option

The error message "Server Not Found" when accessing a newly installed ESXi host via FQDN indicates that basic network configuration and DNS resolution are missing.

AEnsure a DNS A Record is created for the VMware ESXi host on the corporate DNS servers.Correct

For a client to connect to the ESXi host via its FQDN, the corporate DNS servers must have an "A" record mapping the FQDN to the host's IP address, otherwise, the client cannot resolve the name. Without this A record, the client's attempt to connect using the FQDN will fail, resulting in a 'Server Not Found' error.

BUpdate the VMware ESXi Management Network DNS configuration to use the corporate DNS

Updating the ESXi host's own DNS configuration allows the host to resolve external FQDNs, but it does not directly enable a client to resolve the ESXi host's FQDN, which requires an A record in the corporate DNS.

CUpdate the VMware ESXi Management Network IPv4 configuration to use a static a IPv4Correct

A fresh ESXi installation might default to DHCP, but the problem explicitly states 'DHCP: No' and provides a specific static IPv4 address, netmask, and gateway. Manually configuring these static IP settings is essential to establish network connectivity for the management interface on the specified network.

DConfigure at least two network adapters for the VMware ESXi Management Network.

Configuring multiple network adapters for redundancy (NIC teaming) is a best practice but is not required to establish basic connectivity to a single ESXi host or resolve a 'Server Not Found' error.

ESet the value of the VMware ESXi Management Network VLAN ID to 10.Correct

The management network is specified as VLAN ID 10. To ensure the ESXi host's management interface can communicate on the correct network segment, its virtual switch port group for management must be configured with VLAN ID 10, otherwise, the host will not be reachable on the network.

FDisable IPv6 for the VMware ESXi Management Network.

While disabling IPv6 aligns with the requirement for IPv4-only, it is not the direct cause of an IPv4-based 'Server Not Found' error; configuring essential IPv4 parameters and DNS is a higher priority for initial connectivity.

Concept tested: Initial ESXi host network configuration for management access

Source: https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-esxi-and-vcenter-server-80-setup-guide/GUID-A94D2545-F531-41C2-823E-617F384C1C45.html

Topics

#ESXi Network Configuration#Management Network#DNS Resolution#VLAN ID

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