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Blockchain Tutorials

Posted by Tutorials Diary on December 04, 2020

 
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What is Enterprise Blockchain

Blockchain which is used for Enterprises known as Enterprise Blockchain. Hyperledger is one of the examples where we use fabric, Sawtooth etc to develop enterprise specific applications.

Enterprise blockchain are also known as permissioned blockchain as participants are known to each other and blockchain is not open to everyone.

Enterprise Blockchain is different from Public Blockchain in many aspects as this is mainly designed fro Enterprises.

 Difference between Enterprise and Public Blockchain or why we need Enterprise Blockchain

Features of Enterprise Blockchain

Blockchain is Immutable

Cost saving by eliminating middleman

High availability

High Transparency

Automation of manual processes

Increase trust

Examples of Enterprise Blockchain

Hyperledger Fabric

Corda

Qurom

 What is Hyperledger?

Hyperledger was initiated by Linux foundation as a base project to create blockchain based applications.

Hyperledger is one of most popular software for enterprise blockchain

What is Hyperledger Umbrella Project?

What is Hyperledger Fabric?

Hyperledger Fabric is a software that helps developers to develop enterprise blockchain solutions.

Features of Hyperledger Fabric

·        It features a plug-and-play consensus. 

·        Support different programming languages for chaincode development

·        Faster transaction rate.

·        It offers a flexible approach to data privacy – it performs data isolation via ‘channels,’ data sharing on a need-to-know basis by leveraging private data ‘collections.’ 

·        Offer different SDK’s

What is channel in Hyperledger Fabric?

Channel is one of very important feature of Hyperledger fabric that helps participants to have secrets transactions without letting the whole network know.

This feature is not available in Public blockchain as each transaction is seen by anyone but in Fabric you can restrict who can see & do what.

 Can we have multiple channel in Fabric Network?

Yes, there can be n number of channels in a network, but overuse of channel is also not recommended.

 What is MSP (Membership service Provider)?

1. Contains list of parties/actors involved in Blockchain network

2. Provide identity to each participant

What is Fabric CA?

It is a certificate authority component which can integrate existing registry like LDAP

MSP leverages fabric CA component

 What is ACL (Access Control List)?

By using Access Control List (ACL)

1. Handle permission for parties involved 

2. Handle permission at channel level also

What is Committing Node?

No, not all nodes keep copy of ledger, only few nodes keep that and that nodes are known as Committing nodes.

 What is Endorsing Node?

No, not all nodes execute chaincode , only few nodes do that and that nodes are known as endorsing nodes

What is Ordering service?

Sequence of transactions is very important in Blockchain and that is maintained by Ordering node.

 What is State Database?

 List down the high level steps involved in Hyperledger fabric Transaction

Step 1: Client start the transaction

Step 2: Validation of client and transaction

Step 3: Endorsing peer simulate the transaction and send response back to client

Step 4: Verification of responses

Step 5: Broadcast the transaction to Ordering service

Step 6: Order the transaction and put to block

Step 7: Block validation by peers

Step 8: Add block to ledger

 What is the default consensus algorithm used in Fabric?

It use PBFT where we look for 2/3rd Majority to proceed further.

In which scenario the transaction not added to Block?

·        When consensus is not reached

·        Transaction is invalid

Can any client connect to network and send the transaction?            

No, only authorized clients can send the transactions. In the validation step, client identity is checked if that does not match then transaction is nor processed fur

List down the prerequisites steps for Hyperledger Fabric setup        

Operating System: Ubuntu Linux 14.04/16.04 (64 bit)

git & curl: latest version

go version: 1.13.x

Gradle

Nodejs: 8.9 and higher with the exception of 9

libtool: latest version

Docker Engine: 17.06.2 or higher

Docker Compose: 1.14 or higher

Python: 2.7.x

 Why you need Docker engine for Hyperledger fabric?   

Hyperledger fabric uses different docker containers, like ordering service has its own docker container, chaincode has its own etc.

 Why you need to install go language? 

Go language is used to develop the smart contracts (chaincode) in Hyperledger Fabric.

 Why you need Gradle?

Gradle is build automation tool needed when you use Java as programming language for chaincode development.

Blockchain Tutorials is combination of two words, Block and chain so blockchain is chain of blocks and each block store transaction.Each block in blockchain store more than transaction and that transaction count vary for public and private blockchain.

 

blockchain interview questions have a different level of difficulty attached to it. To ensure that you can go through them without any issue, we will group similar questions.

Hindi Blogs

Haique Quartz

Posted by Haique Quartz on December 04, 2020

 
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Haique Quartz is the prominent manufacturer & distributors of Natural and Luxury Quartz surfaces in India. With an infusion of spectacular designs, colors, and patterns, we aim to enrich life experiences.

 

Travel

Self drive car Rental

Posted by Neha Sharma on December 04, 2020

 
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Looking for India's  well organized self drive car rental services ? Delhi Rent Car is an unique online app which allows you to book a range of self-drive car rental with little deposit money and awesome cars to drive.

 

Hindi Blogs

Best tour and travel agency in Delhi

Posted by Vinod Sharma on December 04, 2020

 
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Progressive tour & Travels is the Best tour and travel agency in Delhi specialized in offering custom and pre-designed India destination tour packages and car rent in delhi. we are now one of the best inbound tour operators of India.

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Travel

Luxury Tempo Traveller Hire

Posted by Vinod Sharma on December 04, 2020

 
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Nowadays, luxury tempos have been gaining increasing popularity among tourist with optimum features that will surely appeal to you instantaneously.Tempo Traveller Rent In Delhi company also provide best tour packages like Golden triangle tour, shimla manali tour, himachal tour many more and it is also provide many vehicles on rent at affordable prices like 9,12,16 seater tempo traveller hire in Delhi, Innova Crysta car rental Delhi, luxury tempo traveller hire and Toyota Innova etc.

Eco-tour

Taxi Hire in Udaipur

Posted by Udaipur Taxi on December 04, 2020

 
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Books

The best service for writing your essay.

Posted by David Freeman on December 03, 2020

 
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Fast Writing Service – The Way to Get Plagiarism-Free Papers

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Books

The best service for writing your essay.

Posted by David Freeman on December 03, 2020

 
Forum Post

Fast Writing Service – The Way to Get Plagiarism-Free Papers

Academic assignments are very boring. Not every student has the time and desire to do them on their own. Sometimes it is too difficult, or you cannot have a free minute for this. But this is not a problem now. Stop wasting time trying to find an answer to the request custom essay order. Speedypaper.com will help you find an optimum solution! 

Another plus is that it is quite cheap. You don’t have to spend too much money to get your paper. Plus, you can count on all the experts to make your paper perfect. You will not find any errors or inaccuracies here. Just a few hours, and you can get your paper online. This is a great option for those who value their time and want to get the highest grade. Forget about those times when you had to do all the paperwork yourself. Now you can hire professionals for this kind of work.

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Environment Awareness

Best NGO In India | Best NGO In Delhi

Posted by sakshingo on December 03, 2020

 
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India, one of the most developing countries, is home to millions of people who have limited means of life. NGOs like Sakshi NGOs are helping poor children get the best education, know about various social issues like health, employment and so on. Sakshi Ngo is one of the best ngo in India which helps poor people and gives best education to poor child.

Travel

16 Seater Tempo Traveller Hire | 16 Seater Tempo Traveller on Rent Outstation

Posted by Vinod Sharma on December 03, 2020

 
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Our Tempo Traveller rental in Delhi deals into a great range of the transportation vehicle such as a car, Tempo traveller, bus, minibus, tourist bus, luxury vehicles etc. which will make you enjoy with your friend's group and family completely. We Providing 16 seater Tempo Traveller hire for Outstation Tours Package like Agra Jaipur Tour, Rajasthan Tours which are A/C And Non-A/C both.

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