What Does the MX Record Do in a Forward DNS

question 23

Multiple Choice

What does the MX record do in a forward DNS zone?

• A) It identifies the hostname and port of a computer that hosts a specific network service, such as FTP or SIP.
• B) It identifies the authoritative name server for a domain.
• C) It identifies the e-mail server to be used for e-mail traffic for the domain.
• D) It holds the alternative names for a host.

---

Definitions:

Fixed Costs

Expenses that do not change with the volume of production or sales, such as rent, salaries, and insurance.

Variable Costs

Expenditures that adjust based on the quantity of production or the scale of sales.

Utility Rates

Charges imposed by utility companies for the use of services such as electricity, gas, water, and sewer.

Contribution Margin

The amount by which the sale of a product or service exceeds its variable costs, used to cover fixed costs and contribute to net income.