CBDE Exam Dumps : BTA Certified Blockchain Developer - Ethereum

with private state variables. This way nobody else other than the smart contract itself can see the information

with external contracts holding those values. This way we can make sure that the information flow is following a clear logic and nobody else can access this information.

You can't hide anything on the blockchain, because the information is public, just the call is private which means only other smart contracts would be limited in accessing that information.

to use it for the whole business logic. It’s always best to have everything in once place.

to use it only for things which need the benefits of the blockchain.

only via JavaScript because there is the proprietary Web3.js library.

by any programming language, as long as it adheres to the JSON-RPC standard.