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Exam contains 99 questions

Page 7 of 17

Question 37 🔥

Solidity files:

Which database solution meets these requirements?

A. can't be split across multiple files, everything should be in one single file.

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B. can be split across multiple files, but every contract must be in a file with the same name as the contract itself.

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C. can be spread across multiple files. To import all contract from a file you can use "import 'myfile.sol'. To import Contract MyContract from myfile.sol you use "import {MyContract as SomeContract} from 'myfile.sol';".

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Discussion of the question

Question 38 🔥

Files can be imported:

Which database solution meets these requirements?

A. using relative and absolute paths, where the "." And the ".." depict that it's a relative path.

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B. only via GitHub using the Repository and Username.

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C. using the special requirefile(...) statement, which looks in a specific library path to import files.

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Discussion of the question

Question 39 🔥

Importing from GitHub:

Which database solution meets these requirements?

A. works across all compilers and platforms the same way.

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B. is generally possible, but currently works only in Remix, but doesn't work in Truffle.

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Discussion of the question

Question 40 🔥

Single line comments in Solidity are:

Which database solution meets these requirements?

A. working with either // or ///

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B. working with /* comment */ or /** @.. natspec style */

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C. not possible, all comments must be multi-line.

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Discussion of the question

Question 41 🔥

Multi-Line Comments in Solidity are:

Which database solution meets these requirements?

A. working with either // or ///

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B. working with /* comment */ or /** @.. natspec style */

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C. not possible, all comments must be single-line.

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Discussion of the question

Question 42 🔥

Consensus is reached:

Which database solution meets these requirements?

A. by the miner nodes which make sure that a transaction is valid.

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B. by every single node in the blockchain network executing the same transaction.

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C. by a cryptographic secure signature algorithm called ECDSA which makes sure that cheating is impossible.

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Discussion of the question

Ready to Pass Your Certification Test

blockchain CBDE

Exam contains 99 questions

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