Blockchain BTA Certified Blockchain Developer - Hyperledger CBDH Exam Practice Test

Page: 1 / 14
Total 195 questions
Question 1

A transaction in Hyperledger Fabric is a request to the blockchain to execute a function on the ledger.

By what the function is implemented?



Answer : A

Chaincode is programmatic logic. A transaction is a request to the blockchain to execute a function on the ledger. The function is implemented by a chaincode. Aka smart contracts

References:


Question 2

What type of node commits transactions & keeps the data in sync across the ledger?



Answer : D

Peer nodes commits Transaction & keeps the data in sync across the ledger. They are nodes that maintain the state and copy of a shared ledger. Peers are authenticated by certificates issued by MSP. In Hyperledger Fabric, there are three types of peer nodes depending upon the assigned roles.


Question 3

Which Hyperledger Tool brings on demand as-a-service deployment model into the blockchain ecosystem in order to reduce the effort required to create, manage, and terminate blockchains?



Answer : B

Hyperledger Cello is a blockchain provision and operation system, which helps manage blockchain networks in an efficient way. Cello is a tool that could be used for example by vendors and VARs to provide a BaaS to their customer base.


Question 4

Orderers are responsible for all of the following except one:



Answer : D


Question 5

The security module works in conjunction with the ________________________ module to provide access control service to any data recorded and business logic deployed on a chain network.



Answer : B

The security module works in conjunction with the membership service module to provide access control service to any data recorded and business logic deployed on a chain network.


Question 6

When deploying a database option there are some important things to consider from a deployment perspective. CouchDB and LevelDB can be deployed with Fabric.

Which of the following is a true statement in regards to ledger deployment?



Answer : D

A CouchDB database is closely co-located with a network node and it is embedded within the same operating system process.

References:


Question 7

Business Network Application Model is created in Composer using:



Answer : B


Page:    1 / 14   
Total 195 questions