Question

Question 1
From Unit 3 Lesson 2: Which of the following statements is FALSE?(1 point)
Responses

Analog signals are continuous while digital signals are discrete.
Analog signals are continuous while digital signals are discrete.

A logic gate is more abstract than a transistor because it hides the details of the analog signal and only works with discrete, digital values of 1s and 0s.
A logic gate is more abstract than a transistor because it hides the details of the analog signal and only works with discrete, digital values of 1s and 0s.

Computers only understand machine language.
Computers only understand machine language.

An electrical signal is a transistor has only two possible values -0 and 1.
From Unit 3 Lesson 5: Which of the following is NOT one of the three categories of abstraction in computers mentioned in the text?(1 point)
Responses

Analog
Analog

Software
Software

Hardware
Hardware

Digital
Digital
Question 3
From Unit 3 Lesson 5: High-level languages tend to be more secure and efficient than low-level languages.(1 point)
Responses

True
True

False
From Unit 3 Lesson 5: Which of the following is TRUE about models and simulations?(1 point)
Responses

Models and simulations do not support decision-making.
Models and simulations do not support decision-making.

Models tend to focus on the impossible while simulations only replicate realistic, real-life scenarios.
Models tend to focus on the impossible while simulations only replicate realistic, real-life scenarios.

Models and simulations hide the details of a system in order to reduce its complexity
Models and simulations hide the details of a system in order to reduce its complexity

Models and simulations allow the user to focus on low-level details.
Models and simulations allow the user to focus on low-level details.
Question 5
From Unit 3 Lesson 5: A class attribute is visible outside the class it is defined in.(1 point)
Responses

True
True

False

Answer 1

Here are the answers:

1) FALSE statement: "An electrical signal in a transistor has only two possible values - 0 and 1."
2) NOT one of the three categories: "Digital"
3) High-level languages more secure and efficient than low-level: False
4) TRUE about models and simulations: "Models and simulations hide the details of a system in order to reduce its complexity"
5) "A class attribute is visible outside the class it is defined in.": False