A Network Has Three Independent File Servers, Each with 90

question 27

Multiple Choice

A network has three independent file servers, each with 90 percent reliability. The probability that the network will be functioning correctly (at least one server is working) at a given time is:

• A)99.9 percent.
• B)97.2 percent.
• C)95.9 percent.
• D)72.9 percent.

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Definitions:

Resting Membrane Potential

The electrical charge difference across the membrane of a resting neuron or muscle cell, making it polarized and ready for activation.

Na+

Sodium ions, essential for conducting nerve impulses and maintaining the balance of fluids in the body.

Plasma Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, controlling the movement of substances in and out of the cell.

Potential Difference

Difference in electrical potential, measured as the charge difference across the plasma membrane.