Describe electromagnetic waves.

What will be an ideal response?


An electromagnetic wave consists of an electric field (electro) and a magnetic field (magnetic) that are perpendicular, or at right angles, to each other. These waves, which require no special medium for movement, travel freely through space in all directions at the speed of light, or 186,000 miles (300,000 kilometers) per second.

Computer Science & Information Technology

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Which switch command is used to display the interfaces assigned to a VLAN?

What will be an ideal response?

Computer Science & Information Technology

If no help file is available for a particular dialog box, when you press the F1 key the ____ opens.

A. error message B. Internet C. main Help window D. log-off screen

Computer Science & Information Technology

Placing one open window on top of another open window with just the title bar and a portion of the border visible, is known as ________

A) sorting B) searching C) indexing D) cascading

Computer Science & Information Technology

PowerPoint's print settings allow you to print slides, handouts, or notes pages.

a. true b. false

Computer Science & Information Technology