EoT Term 3 Review

What is a Signal?

• A Signal is a piece of information that is communicated using the senses

• Not a Piece of Information

• Communication gap

• None of these

Give an Example of Methods used to encode signals.

• Calculator Code

• Computer code

• Morse Code and Binary code

• None of these

Binary Numbers

• 0 and 1

• 0 and 8

• 0 and 5

• 0 and 2

What is digital signal?

• None of these

• Numbers and digits

• Numbers and Alphabets

• Is an electrical signal whose value changes between two values

A light ray inside an optical fiber due to wave behaviors. Which behavior is not associated with Optical fibers?

• Because of the wave behavior of reflection.

• Because of the wave behavior of refraction.

• Because of the wave behavior of diffraction.

• Because of the wave behaviour of transmission

The wave shown in the graph above is affected by signal noise. How does this affect the quality of the wave?

• It Increases the quality

• It decreases the quality

• The quality is not affected by noise

• It only affects the wave if you are far away from the source

Kris works with a rover that sends her data about the surface of a distant planet. The digital information is translated by her computer and provides data she can use for her studies.

Which model best describes the signal that Kris' computer receives?

• 
• 
• 
• 

Why do we cut down trees?

• Urbanization and Agriculture

• For decoration.

• Make car

• None of these

What is deforestation?

• The removal of large areas of forest for human purpose

• making a forest

• Planting of more trees

• None of these

____________________is defined as the area of earth's productive land and water required to supply the resources that an individual demands as well as to absorb the wastes that the individual produces.

• Urbanization

• Agriculture

• Ecological footprint

• Deforestation