Learn the essential DNS records required for a seamless vCenter Server Appliance deployment, ensuring correct forward and reverse lookup for both vCenter and ESXi hosts.
Table of Contents
Question
An administrator is preparing for a deployment of a new vCenter Server Appliance. The follow-ing information has been provided to complete the deployment:
- ESXi Host name (FQDN): esx01.corp.local
- ESXi IP Address: 172.20.10.200
- vCenter Server Name (FQDN): vcsa01.corp.local
- vCenter Server IP Address: 172.20.10.100
- NTP Server: 172.20.10.20
- DNS Server: 172.20.10.1
- Deployment Size: Tiny
- Storage Size: Default
Which two actions must the administrator complete before starting the installation of the vCenter Server Appliance? (Choose two.)
A. Create a DNS CNAME record for the vCenter Server (vcsa01.corp.local).
B. Create a DNS CNAME record for the ESXi Host server (esx01.corp.local).
C. Create a reverse DNS A record for the vCenter Server (vcsa01).
D. Create a reverse DNS A record for the ESXi Host server (esx01)
E. Create a forward DNS A record for the vCenter Server (vcsa01).
Answer
A. Create a DNS CNAME record for the vCenter Server (vcsa01.corp.local).
D. Create a reverse DNS A record for the ESXi Host server (esx01)
Explanation
The two actions the administrator must complete before starting the installation of the vCenter Server Appliance are:
A. Create a DNS CNAME record for the vCenter Server (vcsa01.corp.local).
D. Create a reverse DNS A record for the ESXi Host server (esx01).
- A CNAME (Canonical Name) record is an alias or pointer to another domain name. It is required for the vCenter Server Appliance to ensure that the Fully Qualified Domain Name (FQDN) vcsa01.corp.local resolves correctly during the installation process.
- A reverse DNS A record maps an IP address to a hostname. It is essential to create a reverse DNS A record for the ESXi host (esx01) to enable successful communication between the vCenter Server Appliance and the ESXi host during deployment and subsequent operations.
The other options are not required or incorrect:
B. Creating a CNAME record for the ESXi host is unnecessary as it is already identified by its FQDN (esx01.corp.local).
C. A forward DNS A record for the vCenter Server is not explicitly required, as the CNAME record (option A) will handle the forward DNS resolution.
E. Creating a forward DNS A record for the vCenter Server is not necessary, as the CNAME record (option A) will handle the forward DNS resolution.
By creating the CNAME record for the vCenter Server Appliance and the reverse DNS A record for the ESXi host, the administrator ensures that the vCenter Server Appliance installation proceeds smoothly, and the necessary communication and name resolution between the components are established correctly.
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