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Blockchain CBDE Exam With Confidence Using Practice Dumps

Exam Code:
CBDE
Exam Name:
BTA Certified Blockchain Developer - Ethereum
Certification:
Blockchain Developer - Ethereum
Vendor:
Blockchain
Questions:
102
Last Updated:
Apr 3, 2025
Exam Status:
Stable
Blockchain CBDE

CBDE: Blockchain Developer - Ethereum Exam 2025 Study Guide Pdf and Test Engine

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BTA Certified Blockchain Developer - Ethereum Questions and Answers

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Question 1

You interact with a smart contract and see a gas usage of 50,000 gas with a gas cost of 15Gwei.

How much Ether would you have to pay to the miner?

Options:

A.

750,000,000,000,000 Wei

B.

750,000,000,000 Wei

C.

750,000,000 Wei

D.

A flat fee of 1 Ether

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Question 2

It’s possible to access the blockchain via an Ethereum Node:

Options:

A.

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

B.

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

Question 3

The difference between address.send() and address.transfer() is:

Options:

A.

.send returns a Boolean and .transfer throws an exception on error. Both just forward the gasstipend of 2300 gas and are considered safe against re-entrancy.

B.

.send throws an exception and .transfer returns a Boolean on error. Both just forward the gasstipend of 2300 gas and considered safe against re-entrancy

C.

.send returns a Boolean and .transfer throws an exception on error. .send is considered dangerous, because it sends all gas along, while .transfer only sends the gas stipend of 2300 gas along

D.

.send and .transfer are both considered low-level functions which are dangerous, because they send all gas along. It's better to use address.call.value()() to control the gas-amount.

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