Question 1

Truffle:

Accepted Answer

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. 
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.

Question 2

Variables of the type address store:

Accepted Answer

A)  a 20 bytes value 
B)  a 32 bytes value 
C)  a string 
D)  a 20 characters long hex number 
A)  a 20 bytes value 
B)  a 32 bytes value 
C)  a string 
D)  a 20 characters long hex number

Question 3

To get most out of the blockchain, it is best:

Accepted Answer

A)  to use it for the whole business logic. It's always best to have everything in once place. 
B)  to use it only for things which need the benefits of the blockchain. 
A)  to use it for the whole business logic. It's always best to have everything in once place. 
B)  to use it only for things which need the benefits of the blockchain.

Question 4

Having a bug-bounty program early on:

Accepted Answer

A)  can help to engage the community in testing your smart contracts and therefore help to find bugs early. 
B)  might be a burden as it is an administrative overhead mainly. 
C)  is completely useless. Who wants to test beta-ware software? It's better to start with the bug-bounty program after the contract is released on the main-net. 
A)  can help to engage the community in testing your smart contracts and therefore help to find bugs early. 
B)  might be a burden as it is an administrative overhead mainly. 
C)  is completely useless. Who wants to test beta-ware software? It's better to start with the bug-bounty program after the contract is released on the main-net.

Question 5

If a User calls contract A and that calls Contract B, then msg.sender in Contract B will contain the address of:

Accepted Answer

A)  the User. 
B)  contract A. 
A)  the User. 
B)  contract A.

Truffle:

Variables of the type address store:

To get most out of the blockchain, it is best:

Having a bug-bounty program early on:

If a User calls contract A and that calls Contract B, then msg.sender in Contract B will contain the address of:

Certified Blockchain Business Foundations

BTA Certified Blockchain Developer - Hyperledger

BTA Certified Blockchain Solution Architect

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Exam 2: BTA Certified Blockchain Developer - Ethereum

Truffle:

Variables of the type address store:

To get most out of the blockchain, it is best:

Having a bug-bounty program early on:

If a User calls contract A and that calls Contract B, then msg.sender in Contract B will contain the address of:

Certified Blockchain Business Foundations

BTA Certified Blockchain Developer - Hyperledger

BTA Certified Blockchain Solution Architect

Filters