> For the complete documentation index, see [llms.txt](https://simsimbutdifferent.gitbook.io/prompt_web3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://simsimbutdifferent.gitbook.io/prompt_web3/lesson-7/lesson-7-assignments-and-exercises.md).

# Lesson 7: Assignments & Exercises

## **Assignments and Practical Exercises**

**Assignment 1**:

* Analyze a popular smart contract framework (e.g., OpenZeppelin) to identify how they use inheritance and interfaces to provide reusable contract libraries. Discuss the benefits of their approach.

**Exercise 1**:

* Create a contract that inherits from multiple base contracts and also implements an interface. This exercise will help solidify your understanding of how inheritance and interfaces can work together in Solidity.

**Exercise 2**:

* Design a simple dApp architecture using both inheritance and interfaces to demonstrate the modular design. For example, a voting system where base contracts provide common functionalities and interfaces ensure interoperability between different components.

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This lesson aims to equip you with a deeper understanding of inheritance and interfaces in Solidity, laying the foundation for developing advanced smart contracts that are both modular and interoperable.