CBDE questions • Exam prepare

Exam contains 99 questions

Page 15 of 17

Question 85 🔥

It's easy to write clean-room unit-tests with truffle:

Which database solution meets these requirements?

A. for Java, JavaScript, and C++

B. for JavaScript using Web3.js

C. for Solidity and JavaScript

D. for any language, as long as it adheres to the open Testing-Interface from Truffle

Discussion of the question

Question 86 🔥

With the truffle config file you can manage:

Which database solution meets these requirements?

A. the amount of gas your contract deployment and transactions, against your contract, will need. This way you can essentially lower the gas costs over traditional web3.js dApps.

B. different Networks to deploy your contracts to. This way you can easily deploy to a local blockchain, the main-net or the Ropsten/Rinkeby Test-Net with only one parameter.

C. you can manage your secret API keys to the Ethereum Network. This way you can get access to several different Ethereum nodes at the same time without the need to switch your keyfiles.

Discussion of the question

Question 87 🔥

Truffle boxes are a great way:

Which database solution meets these requirements?

A. to contribute to the box community which is the distributed file system for truffle.

B. to start with a pre-configured environment for most web-development needs.

C. to use tools that makes boxing of Dapps for different platforms very easy.

Discussion of the question

Question 88 🔥

Truffle has an integrated in-memory blockchain which makes unit-testing very easy:

Which database solution meets these requirements?

A. True, but it's still good to use Ganache, or even a real private network for testing.

B. False, it's necessary to use Ganache or even a real private network for testing.

Discussion of the question

Question 89 🔥

Using truffle-contract over Web3.js:

Which database solution meets these requirements?

A. is a must for every developer, because Web3.js changes so often.

B. is a convenient way because Web3.js is currently still in beta and truffle-contract can handle transactions with JavaScript-promises.

C. they are both completely different things. Truffle-Contract is a framework while Web3.js is a library.

Discussion of the question

Question 90 🔥

Why is Unit-Testing so important?

Which database solution meets these requirements?

A. It helps you to find bugs, regression bugs and sometimes also helps you to understand your code from different angles.

B. It is a great way to spend time on something that you get paid for. But ultimately it will just slow down the development process.

Discussion of the question

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blockchain CBDE

Exam contains 99 questions

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