Artificial Intelligence Artificial Intelligence 4

Question 1

In a confusion matrix, what does a false positive represent?

Accepted Answer

A negative case incorrectly predicted as positive

Answer

A false positive occurs when the model predicts the positive class for an instance that is actually negative.

Question 2

Which architecture introduced the self-attention mechanism that powers modern large language models?

Accepted Answer

Transformer

Answer

The 2017 Transformer architecture replaced recurrence with self-attention, enabling models like GPT and BERT.

Question 3

A self-driving car deciding when to brake based on sensor input is an example of which AI application area?

Accepted Answer

Autonomous systems and perception

Answer

Autonomous vehicles combine perception and real-time decision-making, a hallmark of autonomous systems.

Question 4

What is the role of the learning rate in gradient descent?

Accepted Answer

It controls the size of each weight update step

Answer

The learning rate scales the gradient to determine how far weights move at each optimization step.

Question 5

Which of these is a generative AI task rather than a discriminative one?

Accepted Answer

Creating a new image from a text description

Answer

Generative models produce new content, while discriminative models classify or predict labels for existing inputs.

Artificial Intelligence Practice Test