You are planning an Exchange Server 2016 organization. The organization will contain a Mailbox server named EX01.
Users will have primary SMTP email addresses in the following domains:
Contoso.com

Fabrikam.com

Cohowinery.com

Wingtiptoys.com

You need to add a DNS record to provide Autodiscover for each domain.
Which type of record should you create in each zone?
Correct Answer: B
Explanation/Reference:
Explanation:
To configure Autodiscover DNS records, you use either an A record, a CNAME record or an SRV record.
Preference being A as its most commonly used, if that's not there choose SRV as this works where A is not possible (certificate only has 1 SAN) and if that's not there choose CNAME (can be used but can cause compatibility issues and cert issues).