What Is the Function of the Lower Layers in the Open

question 75

Multiple Choice

What is the function of the lower layers in the Open Systems Interconnection (OSI) model?

• A) determining how a device connects physically using a transmission medium
• B) determining how software applications will interface with the user
• C) determining how any errors in data transmission will be identified and corrected
• D) determining how the connection will be established and then broken off when finished

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Definitions:

Break-Even Point

The production level or sales volume at which total revenues equal total expenses, resulting in neither profit nor loss.

Fixed Costs

Expenses that do not change with the level of goods or services produced by a business, such as rent, salaries, and insurance.

Contribution Per Unit

The amount of revenue from each unit sold that contributes to covering fixed costs and generating profit.

Fixed Costs

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