A. is a framework that helps developers with Testing, Deployment and Management of Smart Contracts and Distributed Applications.

B. is a library that helps developers to connect to Ethereum nodes, because it abstracts the JSONRPC interface.

C. is a framework for Java, similar to Web3.js for JavaScript. It's a great way to develop distributed Java enterprise applications.

will return false on error while address.transfer() will cascade transactions.

will cascade exceptions and address.transfer() will return a false on error.

will return false on error while address.transfer() will cascade transactions.

are dangerous when used with data structures that grow, such as arrays or mapping, because it is hard to estimate the gas requirements.

are a great way to circumvent gas requirements, because a loop will only consume gas once.

are dangerous when used with data structures that grow, such as arrays or mapping, because it is hard to estimate the gas requirements.

should be avoided where possible, because of unknown side-effects on the gas requirements.

View CBDE Exam Questions

Q: 1

Truffle:

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Q: 2

Address.send():

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Q: 3

Which is the right order for Denominations?

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Q: 4

Finish the sentence: The Library Web3.js is …:

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Q: 5

When a smart contract pays out money:

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Q: 6

Proof of Work (PoW) vs. Proof of Stake.

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Q: 7

Loops in Solidity:

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Q: 8

Why is it important to follow the same Interfaces?

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Q: 9

A Mapping consists of keys and value.

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Q: 10

In order to implement an ERC20 token contract, you'd need at least to implement the following functions and events in order to fulfill the interface requirements:

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Question 1 of 20 · Page 1 / 2

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