Why Did the Heian Era End,and What Period Followed

question 30

Essay

Why did the Heian era end,and what period followed?

Recognize the importance and function of firewalls in network security.

Describe methods and devices used for authenticating access to computer systems.

Understand the mechanisms of data breaches and their impacts.

Identify common techniques used by hackers to access and exploit computer systems.

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Definitions:

Center

The midpoint of a geometric shape or object, or the average position of all the points in the shape.

Radius

The distance from the center of a circle to any point on its circumference, or from the center of a sphere to any point on its surface.

Center

A key point that is often the midpoint or origin in geometric figures, such as circles or ellipses, around which symmetry or rotation occurs.

Radius

In geometry, the distance from the center of a circle to any point on its circumference, also half the diameter of the circle.