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BTA Certified Blockchain Developer – Hyperledger

Last Update 4 days ago
Total Questions : 195

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Question # 1

What type of peer endorses and executes a transaction?

Options:

A.  

Endorsement Peer

B.  

Peered Peer

C.  

Executing Peer

D.  

Endorsing Peer

E.  

Peer Node

Discussion 0
Question # 2

What component of Hyperledger Composer captures the core data in a business network including the business model, transaction logic, and access controls?

Options:

A.  

Business Network Adapter

B.  

Business Network Interface

C.  

Business Network Card

D.  

Business Network Archive

E.  

Business Network API

Discussion 0
Question # 3

What function is used to call the shim.Start function below?

Question # 3

Options:

A.  

import

B.  

init

C.  

main

D.  

type

Discussion 0
Question # 4

What certificate is granted an "allocation" of transaction certificates to each user?  

Options:

A.  

rootcert

B.  

ecerts

C.  

tcerts

D.  

PKI

E.  

RSA

Discussion 0
Question # 5

Based on the code snippet, the reference —> to Contract indicates:

Question # 5

Options:

A.  

A pointer to a contract class

B.  

A bidirectional resource

C.  

Expedited delivery

D.  

A unidirectional relationship

Discussion 0
Question # 6

Every . cto model file requires a___________which means that every name inside of it must be unique.

Options:

A.  

namespace

B.  

chaincode

C.  

participant

D.  

asset

Discussion 0
Question # 7

Exhibit.

Question # 7

Options:

A.  

This command issues a card for the admin user

B.  

This command issues a revocation for the user Ernesto

C.  

This command issues a card for the user Ernesto and exports the card file to the current directory

D.  

This command does none of the above

Discussion 0
Question # 8

Exhibit.

Question # 8

Based on the permissions .acl displayed, which rule allows the administrator access to the users resources.

Options:

A.  

NetworkAdminUser

B.  

Default

C.  

NetworkAdminSystem

D.  

SystemACL

Discussion 0
Question # 9

What is a transaction request sent from a client or admin user to one or more peers in a network?

Options:

A.  

Chaincode

B.  

Proposal

C.  

Update

D.  

RPC

Discussion 0
Question # 10

The keyword is used if you do not want the resource to be instantiated while still used as a super type for the other resources of that type.

Options:

A.  

extends

B.  

noinstantiate

C.  

concrete

D.  

abstract

Discussion 0
Question # 11

The_______________is used to sign, verify, provision, and authenticate in Hyperledger Fabric

Options:

A.  

Membership Service Provider

B.  

Onboarder

C.  

Cryptographic generator

D.  

None of the above

Discussion 0
Question # 12

Which part of the Hyperledger Project has the marketing responsibility for commercial adoption of the Hyperledger Solutions?

Options:

A.  

Tools

B.  

Management

C.  

Infrastructure

D.  

Framework

Discussion 0
Question # 13

The Hyperledger Project consists of the following EXCEPT?

Options:

A.  

Infrastructure

B.  

Tools

C.  

Framework

D.  

Management

Discussion 0
Question # 14

Transaction Log Data is immutable i.e , once its written to the log it cannot be changed or deleted.

Options:

A.  

TRUE

B.  

FALSE

Discussion 0
Question # 15

Which Hyperledger tool provides an open source browser for viewing activity on the underlying blockchain network?

Options:

A.  

Caliper

B.  

Quilt

C.  

Cello

D.  

Explorer

Discussion 0
Question # 16

In Hyperledger Fabric, miners are called?

Options:

A.  

Committer Peer

B.  

There are no miners in Hyperledger

C.  

Endorser Node

D.  

Channels

Discussion 0
Question # 17

You would like to download Hyperledger Fabric.

What would be the command to start the process?

Options:

A.  

ftp clone https://github.com/hyperledger/fabric.sh

B.  

git clone https://github.com/hyperledger/fabric.git

C.  

ftp clone https://github.com/hyperledger/fabric.git

Discussion 0
Question # 18

What is the process of turning cipher-text back into plaintext called?

Options:

A.  

Packing

B.  

Encryption

C.  

Decryption

D.  

Hashing

Discussion 0
Question # 19

What must implement every chaincode?

Options:

A.  

Golang

B.  

Chaincode Interface

C.  

Java

D.  

Linux APIs

Discussion 0
Question # 20

Consensus algorithms are used because _______________

Options:

A.  

They can include specific rules or conditions to be met

B.  

They increase the network security from hacking

C.  

They prevent blockchain node failure

D.  

They increase network speed

Discussion 0
Question # 21

Voting-based algorithms are advantageous in that they provide a benefit but a tradeoff. (Select two.)

Options:

A.  

Trade off between scalability and security.

B.  

Better security due to node control.

C.  

Low-latency finality.

D.  

Trade off between scalability and performance.

Discussion 0
Question # 22

All but one can be used as Orderer implementation:

Options:

A.  

Active MQ

B.  

KKafka

C.  

Solo

Discussion 0
Question # 23

The gossip data dissemination protocol performs which three functions? (Choose three.)

Options:

A.  

Manages peer discovery and channel membership

B.  

Disseminates ledger data across all peers on the channel

C.  

Manages channel membership only

D.  

Sync ledger state across all peers on any channel

E.  

Sync ledger state across all peers on the channel

F.  

Manages peer discovery only

Discussion 0
Question # 24

Exhibit.

Question # 24

The function displayed is not called:

Options:

A.  

On delete

B.  

On initialization

C.  

On upgrade

Discussion 0
Question # 25

Hyperledger Fabric Composer allows for an easy front end application development experience without having to know the network internal application structure.

How is this done in Hyperledger Fabric? 

Options:

A.  

LoopBack connector for business networks exposes a running network as a RPC API which can easily be consumed by client applications and integrate non-blockchain applications.

B.  

LoopBack connector for business networks exposes a running network as a SOAP API which can easily be consumed by client applications and integrate non-blockchain applications.

C.  

LoopBack connector for business networks exposes a running network as a SOAP or RESTFUL API which can easily be consumed by client applications and integrate non-blockchain applications.

D.  

LoopBack connector for business networks exposes a running network as a REST API which can easily be consumed by client applications and integrate non-blockchain applications.

Discussion 0
Question # 26

REST (Representational State Transfer) Server is often used to proxy requests to Hyperledger chaincode.

What value does using REST APIS provide?

Options:

A.  

Provides a well-defined process for accessing blockchain services.

B.  

Provides a well-defined middleware for connecting to off chain services such as Bitcoin.

C.  

Provides a well-defined middleware for connecting to blockchain services.

D.  

Provides a well-defined process for accessing web services.

Discussion 0
Question # 27

What type of organization can be thought of as a corporation run without any human involvement under the control of an incorruptible set of business rules?

Options:

A.  

Limited Liability Corporation

B.  

Decentralized Autonomous Organization (DAO)

C.  

Corporation

D.  

Trust

Discussion 0
Question # 28

Advantages of using Composer:

Options:

A.  

Reduced lime to market

B.  

Hides the complexity of the DLT technology

C.  

Offers Domain/Business modelling capabilities

D.  

All of the above

Discussion 0
Question # 29

What type of peer executes chaincode?

Options:

A.  

Anchor peer

B.  

Endorsing Peer

C.  

Chaincode is executed by the client

D.  

Ordered Peer

E.  

Chaincode is not executed by a peer.

Discussion 0
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