Microsoft Azure Security Engineer Associate AZ-500 Practice Question
You created an Azure Front Door Standard profile that exposes the default frontend host prodfd.azurefd.net. You now need to onboard the apex domain contoso.com and let Front Door automatically issue and renew a free Microsoft-managed TLS certificate. Which DNS record must you add so that Front Door can verify ownership of contoso.com?
Add a TXT record named _dnsauth.contoso.com with the value supplied by Azure Front Door
Add a CNAME record named afdverify.contoso.com that points to prodfd.azurefd.net
Add an A record for contoso.com that maps to the IPv4 address returned by prodfd.azurefd.net
Add an AAAA record for contoso.com that maps to the IPv6 address returned by prodfd.azurefd.net
Azure Front Door Standard and Premium require a DNS TXT record whose host name starts with _dnsauth when validating ownership of any custom domain. For an apex domain such as contoso.com, create a TXT record named _dnsauth.contoso.com and paste the unique value provided by Front Door. After this TXT record is detected, Front Door confirms that you control the domain and can proceed to provision and renew the complimentary Microsoft-managed TLS certificate. CNAME, A, and AAAA records do not satisfy the ownership-validation check.
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Microsoft Azure Security Engineer Associate AZ-500
Secure networking
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