The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Review - Public Private External an

The video tutorial explains the structure and functionality of two smart contracts, A and B. Contract A includes state variables and functions with different visibility levels, such as public, external, and internal. Contract B inherits from Contract A and demonstrates how function visibility affects data accessibility. The tutorial covers compiling, deploying, and testing the contracts, emphasizing the importance of understanding function visibility for effective smart contract development.

What is the initial data value set in Contract A?

• 5

• 20

• 10

• 15

Which function in Contract A is responsible for setting the data to 25?

• Function Z

• Function X

• Function Y

• Function L

What is the result of function L when accessed in Contract B?

• 10

• 3

• 7

• 25

What happens when function L is changed from public to private?

• It can still be accessed externally.

• It becomes inaccessible from outside the contract.

• It generates no errors.

• It can be accessed by any contract.

If function L is set to external, what is the limitation?

• It becomes private.

• It can only be accessed by derived contracts.

• It cannot be used for internal calls.

• It cannot be accessed externally.