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_____ are glass tubes surrounded by concentric layers of glass, called "cladding," to form a light path through wire cables.
Total Revenue
The complete amount of money received by a company or organization from its business activities, such as sales of goods or services, before any expenses are subtracted.
Total Cost
The complete cost of production, including both fixed and variable costs.
Economic Profits
The distinction between the total income of a company and its overall expenses, encompassing both direct and indirect costs.
Actual Expenses
The real or verified costs incurred during a specific period for operations, projects, or activities.
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Q120: In the context of fault-tolerant systems, describe