Which of the Following Default Port Numbers Need to Be

question 74

Multiple Choice

Which of the following default port numbers need to be open on a firewall for a mail server to successfully send and receive mail? (Choose three.)

• A) 22
• B) 25
• C) 53
• D) 80
• E) 110
• F) 143
• G) 161

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Definitions:

Equilibrium Price

The price at which the quantity of a good demanded by consumers equals the quantity supplied by producers, leading to a balance where there is no tendency for the price to change.

Price Ceiling

A regulatory limit placed on the amount that can be charged for commodities and services, to prevent market imbalances.

Equilibrium Price

The price at which the quantity of a good or service supplied matches the quantity demanded, leading to market stability.

Market Price

The price at which goods and services are bought and sold in a competitive marketplace, reflecting supply and demand dynamics.