# Quiz[#](https://docs.nvidia.com/learning/physical-ai/getting-started-with-isaac-lab/latest/transfer-policies-from-simulation-to-reality/06-conclusion/03-quiz.html.md#quiz 'Link to this heading')

1. What is the advantage of using simulation in robot learning?

 - **A.** It’s more cost-effective

 - **B.** It allows for faster than real-time training

 - **C.** It provides access to privileged information

 - **D.** All of the above

Answer

**D**

2. The “reality gap” in sim-to-real transfer refers to:

 - **A.** The difference between simulation and real-world conditions

 - **B.** The time it takes to deploy a policy

 - **C.** The cost difference between simulation and real robots

 - **D.** The physical distance between the simulation computer and the robot

Answer

**A**

3. Which of the following is not a component of the reality gap?

 - **A.** Approximation errors

 - **B.** Model errors

 - **C.** Unmodelled dynamics

 - **D.** User interface errors

Answer

**D**

4. Domain randomization always improves the performance of a policy when deployed on hardware.

 - **A.** True

 - **B.** False

Answer

**B, false**

5. What is the primary purpose of regularization in sim-to-real transfer?

 - **A.** To increase training speed

 - **B.** To create more realistic simulations

 - **C.** To encourage smooth, hardware-friendly behavior

 - **D.** To improve visual rendering in simulations

Answer

**C**

6. In the context of privileged information, what does the “teacher” in a teacher-student approach have access to?

 - **A.** Only real-world data

 - **B.** Only simulated data

 - **C.** Both simulated and real-world data

 - **D.** Information not available to the real robot

Answer

**D**

7. Which of the following is a benefit of using actuator networks in sim-to-real transfer?

 - **A.** They eliminate the need for real robots

 - **B.** They accurately model complex actuator behaviors

 - **C.** They speed up physical robot movement

 - **D.** They reduce the cost of robot hardware

Answer

**B**

8. The goal of visual domain randomization is to achieve photorealism.

 - **A.** True

 - **B.** False

Answer

**B, False**

9. What is a key consideration when balancing domain randomization and real-to-sim approaches?

 - **A.** Always prioritize domain randomization

 - **B.** Focus solely on real-to-sim techniques

 - **C.** Find a balance that creates robust yet effective policies

 - **D.** Ignore both approaches and rely on intuition

Answer

**C**