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Crux Key Bitcoin: STEP BY STEP TUTORIAL
Showing posts with label STEP BY STEP TUTORIAL. Show all posts
Showing posts with label STEP BY STEP TUTORIAL. Show all posts

Apr 13, 2019

HOW TO TRADE CRYPTOCURRENCY ON BINANCE – REVIEW FOR 2020

April 13, 2019 6
HOW TO TRADE CRYPTOCURRENCY ON BINANCE – REVIEW FOR 2020

UPDATE October 1st 2020: Binance is still my favourite cryptocurrency exchange to trade on but I have changed my strategy big time over the last couple of months. I have been using a cryptocurrency trading bot to make my trades for me and have seen awesome results so far…
This is the Notorious Bot – which is becoming pretty famous in Crypto circles. Using the bot reduces the time and stress involved with trading manually and maximises the potential for profit with minimal risk. Crypto trading bots are only really right for those who have a portfolio of at least 5k in cryptocurrency already, if you’re in that position have a read of this post where we review cryptocurrency trading bots and introduce you to the Notorious Bot.

I first heard about trading cryptocurrency for fun and profit in November 2016.
I had bought Bitcoin many times in the past in order to purchase MDMA and other goodies on the dark web but I was almost totally unaware of the massive Cryptocurrency market and the huge potential that was on offer.
Encouraged by a friend who had become an overnight millionaire, I decided to learn as much as I could about the cryptocurrency market and how to make money trading Bitcoin and other coins.
Within a year, I have turned $9000 into $350,000.
Investing in cryptocurrency has completely changed my finances and I honestly believe that crypto is the future. There are so many problems that cryptocurrency helps to solve and although many speculate that crypto is a bubble, I don’t see this bad boy disappearing any time soon.
You don’t need to understand all of the ins and outs of how cryptocurrency works to get started on building your own cryptocurrency portfolio.
I still don’t know about some of the fundamentals of Cryptocurrency – I have no fucking idea what the blockchain is or how it works, I don’t need to.
I research which coins have a bright future, I buy them, I sit on them and I wait for them to explode – more often than not, if you choose the right coins, you can make a killing.
To start off trading crypto, you are going to need to buy some Bitcoin so that you can then buy the other coins you want in your cryptocurrency portfolio.
You can buy Bitcoin in a few different places online, I mostly recommend Binance as it’s one of the biggest and most trusted platforms out there.
Once you have your Bitcoin, you can then send it to a cryptocurrency exchange where you can purchase hundreds of other coins using your Bitcoin.
Check out this post for a full list of cryptocurrency exchanges – I’ll be updating this daily as exchanges start taking new members again.
I’ve been trading on several different exchanges for about a year now and today I’m going to introduce you to the best cryptocurrency exchange for beginners – Binance.

I’ve put together the ultimate guide to the Binance exchange. My goal is to show you guys…
  • How to use Binance exchange platform
  • How to trade on Binance
  • How to deal with Binance exchange fees
  • Why Binance is safe
I’ll also be giving you a breakdown of what I do like about Binance and what I don’t like about Binance – in short, this is the ultimate Binance review and by the time you are done reading this, you should be ready to kick some ass and start trading cryptocurrency today.
In my opinion, Binance offers the easiest and safest way to buy and trade cryptocurrency. 
Let’s make some fucking money.

Quick Answer – How to Trade on Binance

  • Set up an account on Binance
  • Enable 2FA
  • Deposit Cryptocurrency of choice (I recommend Bitcoin)
  • Trade alt coins of choice using “Basic Exchange” function

Cryptocurrency Overview

If you are new to the world of cryptocurrency – I commend you! Welcome brave explorer!
You are about to enter a fascinating new world and, if you are quick, be amongst the last wave of early adopters of cryptocurrency.
While it might seem like everyone and their mother is investing in Bitcoin and other digital currencies, truth be told, you are still a pioneer as most of the world’s population has not yet jumped on the crypto train…
According to the Bitcoin database there are only 23 million registered addresses for Bitcoin. While there are plenty of other cryptocurrencies on the market, and this number is growing exponentially, it shows that out of 7 billion people on earth, less than 1% are currently invested in cryptocurrency.
Personally, I believe that cryptocurrency is the future and that by jumping in now you not only stand a very good chance of making a yacht-load of money but you also hedge your bets against crypto taking over.
You still have time to build a cryptocurrency portfolio, and invest in the currency of the future.
But, the window is closing.
Every day, thousands more people are investing, and coin prices are going up.
To get maximum returns on your investment, you need to join the party sooner rather than later as, almost every day, the cost of entry goes up.
The best way to make money with cryptocurrency is to select a portfolio of coins you like (based on their tech, mission, team or roadmap), to invest into several of these (thus spreading your risk) and to then simply wait a couple of years.
To get involved in cryptocurrency though, you need to join a cryptocurrency exchange…

Getting started trading on Binance

This is very important! Whilst the Binance coin exchange is the best trading platform available for digital currencies, you cannot trade traditional currencies on it! 
What does this mean?
This means you can’t transfer you US Dollars /Euros / Sterling Pound to your Binance account – you can only transfer cryptocurrency into your Binance exchange account.
So before learning how to trade on Binance, you need to…
  1. Purchase Bitcoin outside of Binance.    
  2. Transfer your Bitcoin to Binance.
  3. Purchase the other cryptocurrencies you want using your Bitcoin.

Why Binance Exchange is the Best Coin Exchange

I’ve been trading crypto for over a year now and let me tell you – crypto trading has come a long, long way in a remarkably short amount of time.
A few years ago, buying, trading and selling coins was a fucking nightmare. The technology was iffy, the software was unnavigable, and every time I clicked my mouse to ‘buy‘ or ‘sell‘, I did so whilst holding my breath.
But now that cryptocurrency is larger than the entirety of JP Morgan, the game is very very different and has become much more legitimate. Binance exchange has helped change the game for the better.

What is Binance

Binance is a digital asset exchange service. Basically it’s an online platform that allows people to buy cryptocurrencies using Bitcoin. Learning how to trade on Binance will get you in the cryptocurrency game and give the ability to trade basically any coin on the market. Best of all, unlike some other exchanges, Binance offers a truly staggering number of cryptocurrencies for you to buy and sell so you are very likely to find the coins you are looking for on the Binance platform.

Where is Binance Located?

Binance coin exchange is a Chinese based company, and because of this the website supports multiple languages. Binance exchange has received a ton of growth and investment. According to Craft.co, Binance has received over 10 million dollars in investment funding from various Chinese venture capital groups. Binance is, at the time of writing, one of the largest and most legit exchanges based out of China and this is a huge advantage. It seems likely that more and more cryptocurrency investment will continue to be driven from China so trading on a Chinese based exchange has some advantages.
Binance being located in China has its own set of pros and cons, but we’ll get over that in just a minute.

Why Binance is the Best Trade Platform for Cryptocurrency

Truth be told, there are a ton of platforms to trade cryptocurrency on.
Some of the more popular ones are Bittrex, Bitfinex, Kraken, and Poloniex – but there are hundreds of others. Each has their own unique set of pros and cons and many exchanges have now stopped taking on new members due to exploding in popularity.
Binance Exchange is one of the few, well regarded and trusted, exchanges remaining that still takes on new members. 
I trade on several exchanges but in the past few weeks, Binance has become my go-to and I am now trading almost exclusively on the Binance platform. This is for a few reasons…

Pros of Binance

  • Great reputation
The most important thing about the best cryptocurrency trading platforms is their reputation. The reviews for Binance are through the roof as it is easy to use and most importantly – SECURE! The team behind Binance has a proven record in both cryptocurrency and finance in general. Personally, I’ve had no problems with Binance thus far and when I did open a support request I found the team to be super fast and helpful at getting back to me.
  • Good for newbies and pros
The interface is easy for beginners to use, and advanced enough for pros to really crush it.
  • Access to hundreds of cryptocurrencies 
The main reason I’ve now started trading almost exclusively on Binance is because of the massive range of coins available. Many exchanges don’t offer more than 20 or so coins, Binance offers hundreds. Binance focuses on hosting newer alt coins before other exchanges so often the cheapest place to buy certain cryptocurrencies anywhere online is on Binance, this can give you a massive edge if you pick up coins that are only listed in a couple of places and those coins then go on to do very well and get listed elsewhere; this will push up the price and you’ll make a killing just for entering early.
  • Low fees on transactions and withdrawals 
One of the biggest draws to Binance is the super cheap transaction fees. Since Binance are in the startup phase, the fees really are some of the least expensive out there. Binance charge nothing for new deposits of coins onto the platform and just 0.1% on the value of trades. To put this in perspective – if you were to use your Bitcoin to buy $100 of Ethereum, Binance would charge you 10 cents.
  • Capable of processing 1.4 million transactions per second
Knowing exactly what this means is unimportant. Just know that Binance is fast, and fast is good. I’ve had some real issues with lag on some trading exchanges, especially Poloniex, and sometimes this lag has cost me serious money on trades. I haven’t had this problem occur on Binance.
  • Support is available in many languages
Good if you are bilingual!
  • Great reward and affiliate programs
If you sign up to Binance through my affiliate link, I’ll earn a small kick back at no cost to you. You can then use your own account to invite friends and family and earn a small commission yourself.

Cons of Binance 

While Binance is my favourite platform for exchanging cryptocurrency, it’s not without its flaws. My experience has mostly been positive but I’ve noticed a few complaints online….
  • Difficulty with Android version of app
I actually haven’t used the app yet, as I conduct most of my business on my laptop.
  • Delays with certain coins
I haven’t had any problems but some users on Reddit have expressed frustration at coins taking a long time to turn up in Binance wallets. In my experience though, this is a recurring issue across all exchanges and the coins do always eventually turn up – assuming you haven’t fucked it up!
  • Binance does collect and store some user data, such as logging IP addresses
But so does Bittrex and the other major trading platforms.

Is Binance Safe?

Overall, the pros of Binance greatly outweigh the few cons. Truthfully, this platform is as good as it gets, so if you are wondering if ‘is Binance safe?’ – fear not! Just be sure to follow the golden rules of safe crypto trading – more on that later – and you shall be fine.
As you will see in the step-by-step guide, Binance is one of the most secure and best cryptocurrency trading platforms out there and if you’re new to crypto, Binance really is the most accessible platform with some of the simplest, easiest to read, charts.

How to Set up an Account on Binance

Note – I highly recommended you do this on a desktop or laptop, not your mobile phone.
As mentioned, one of the best aspects of Binance is how easy it is to use.
This step by step guide will show you exactly how to set up an account with Binance, so you can start trading cryptocurrency straight away…


Step One – Go to Binance

Click here to get to the exact page of Binance exchange login you need to get started.
The page should look like this. A few things to keep an eye out for…
Binance’s Homepage – where you can access Binance Exchange Login  
Notice in the top left hand corner. “Secure”.
*Pro tip* – Now that you are in the crypto world, it’s a good idea to always keep an eye out for secure websites. The most dangerous part of cryptocurrency is landing on a fake website and sending your hard earned crypto to a scammers wallet – if you do that, you can’t get it back.
By ensuring websites are “secure”, you can ensure you are protecting yourself.
In the top right hand corner, click “Register”
Click register in the top right hand corner to get to the Binance Exchange Login

You should then be taken to this page.
Binance requires one capital letter. I recommend using a non-obvious password with lots of letters and numbers
Fill out your information. The password you create must be at least 8 characters with ONE capital letter.
*Pro tip* Please, for the love of god, do not use your pets name as your password. Generate a new password, filled with letters, numbers, capitalisation, and everything in between. These little steps help ensure your account and beautiful cryptocurrency stays warm and safe.
After you click register, you’ll be presented with a quick verification puzzle. Again, this is for safety to assure you are a human being and not hacking-software.
It’s a strange captcha but it’s effective (Binance Exchange Login)

Slide the slider over the puzzle piece and viola!
Binance verification is taken seriously

We are on our way! Now check your email…
While a bit of a process, Binance verification ensures your transactions are secure

…and click “Verify Email”.
Which will then take you here…
Click “Login”…
https ensures you are not going to get hacked
Then….
Then…
2FA (Otherwise known as “Google Authenticator”) is highly highly highly recommended

Top 55 Blockchain Interview Questions You Must Prepare In 2020

April 13, 2019 0
Top 55 Blockchain Interview Questions You Must Prepare In 2020


General Blockchain Interview Questions

Q 1. What do you know about Blockchain? What is the difference between Bitcoin blockchain and Ethereum blockchain?

The blockchain is a decentralized distributed database of immutable records. The technology was discovered with the invention of Bitcoins(the first cryptocurrency). It’s a trusted approach and there are a lot of companies in the present scenario which are using it. As everything is secure, and because it’s an open source approach, it can easily be trusted in the long run.

It enables the information to be distributed among the users without being copied.Q 2. What is the principle on which blockchain technology is based on?

Q 3. What are the different types of Blockchains?

Blockchains are of three types: 
Blockchain types-top blockchain interview questions-edureka

Q 4. Why is Blockchain a trusted approach?

  • Blockchain can be trusted due to so many reasons.
  • Its compatibility with other business applications due to its open-source nature.
  • Its security. As it was meant for online transactions, the developers have paid special attention to keeping up the pace when it comes to its security.
  • It really doesn’t matter what type of business one owns, Blockchain can easily be considered.

Q 5. Name the two types of records that are present in the blockchain database?

These records are block records and transactional records. Both these records can easily be accessed, and the best thing is, it is possible to integrate them with each other without following the complex algorithms.

Q 6. Blockchain is a distributed database. How does it differ from traditional databases?

PropertiesBlockchainTraditional Database
OperationsOnly Insert Operations Can perform C.R.U.D. operations
ReplicationFull Replication of block on every peerMaster Slave
Multi-Master 
ConsensusMajority of peers agree on the outcome of transactions Distributed Transactions(2 phase commit)
InvariantsAnybody can validate transactions across the network Integrity Constraints


Q 7. What are the properties of Blockchain?

There are four key features of blockchain:
  • Decentralized Systems
  • Distributed ledger
  • Safer & Secure Ecosystem
  • Minting

Q 8. What is encryption? What is its role in Blockchain?


Data security always matters. Encryption is basically an approach that helps organizations to keep their data secure.
cryptography-top blockchain interview questions-edureka
The encrypted data is encoded or changed up to some extent before it is sent out of a network by the sender and only authorized parties can access that information.In Blockchain, this approach is useful because it simply adds more to the overall security and authenticity of blocks and helps to keep them secure.

Q 9. What do you mean by blocks in the blockchain technology?


Blockchain consists of a list of records. Such records are stored in blocks. These blocks are in turn linked with other blocks and hence constitute a chain called Blockchain.
Blocks-top interview questions-edureka

Q 10. How does a block is recognized in the Blockchain approach?

Every block in this online ledger basically consists of a hash pointer which acts as a link to the block which is prior to it, transaction data and in fact a stamp of time.

Q 11. Is it possible to modify the data once it is written in a block?

No, it’s not possible to do so. In case any modification is required, the organization simply has to erase the information from all other blocks too. It is because of no other reason than this, data must be given the extreme care of while using this approach.

Q 12. What are Block Identifiers?

In Blockchain, blocks can be identified by the block header hash and the block height.

Q 13. Is it possible in Blockchain to remove one or more block from the networks?

Yes, it can be done. There are times when only a specific portion of this online ledger is to be considered. With the help of default options and filters, this can easily be done without making a lot of efforts.

Q 14. What exactly do you know about the security of a block?

Well, a block or the entire blockchain is protected by a strong cryptographic hash algorithm. Each block has a unique hash pointer. Any modification in the block constituents will result in the change in the hash identifier of the block.  Therefore, it offers an excellent level of security. Thus, one needs not to worry about the safety as well as the security of data that is present in a block.

Q 15. What are Merkle trees? How important are Merkle trees in Blockchains?

Merkle Tree also known as ‘hash tree’ is a data structure in cryptography in which each leaf node is a hash of a block of data, and each non-leaf node is a hash of its child nodes.
Merkle tree-top blockchain interview questions-edureka

The benefit of using the Merkle Tree in blockchain is that instead of downloading every transaction and every block, a “light client” can only download the chain of block headers.
Also, if someone needs to verify the existence of a specific transaction in a block, then he doesn’t have to download the entire block. Downloading a set of a branch of this tree which contains this transaction is enough. We check the hashes which are just going up the branch (relevant to my transaction). If these hashes check out good, then we know that this particular transaction exist in this block.

Q 16. What is a ledger? Is Blockchain an incorruptible ledger?

Blockchain is considered incorruptible. Any ill-intentioned individual acting alone is powerless. “To take over the network, an attacker would have to control more than 50 percent of its total computing power,” Augier explains. “We hope that’s a theoretical scenario, but we can’t be sure. Should it happen, the individual would take every precaution to avoid being noticed.” Not to mention the energy required to power the computers needed for the blockchain system to work.

Q 17. Name the common type of ledgers that can be considered by users in Blockchain?

These are:
Q 18. How is a blockchain ledger different from an ordinary one?
The first and in fact the prime difference is Blockchain is a digital ledger that can be decentralized very easily. The chances of error in this approach are far less than that in an ordinary ledger. An ordinary ledger is what that is prepared by hands or by human efforts while the Blockchain performs all its tasks automatically. You just need to configure it in a proper manner and by following all the guidelines.

Q 19. What type of records can be kept in a Blockchain? Is there any restriction on same?

There is no restriction on keeping records of any type in the Blockchain approach. Industries are using Blockchain for securing all types of records.
The common types of records (to name a few) that can be kept on the Blockchains are:
  • Records of medical transactions
  • Identity management
  • Transaction processing
  • Business transactions,
  • Management activities
  • Documentation

Q 20. A distributed digital ledger is used for recording transaction in Blockchain. What does the system rely on?

The system relies on the network servicing protocol and the nodes of the network.

Q 21. Can You explain the components of Blockchain Ecosystem?

Following are the components of blockchain Ecosystem:

Blockchain_components-top blockchain interview questions-edureka

Q 22. State difference between proof-of-work & proof-of-stake?





proofofwork_proofofstake-top blockchain interview questions-edureka
                                                           Proof-of-work vs proof-of-stake

Q 23. Name some popular platforms for developing blockchain applications

After the development of bitcoin, various blockchain platforms started coming up. Ethereum came right after the evolution of Bitcoins, and is one of the popular public platforms for building Blockchain based applications.
Then there is a Hyperledger community for building enterprise-based solutions. Also, Qtum, IOTA, EOS are some of the widely used platforms for building Blockchain.

Q 24. What is Double Spending? Is it possible to double spend in a Blockchain system?

It’s a condition when one digital token is spent multiple times because the token generally consists of a digital file that can easily be cloned. It simply leads to inflation and organizations must bear a huge loss. One of the primary aims of Blockchain technology is to eliminate this approach up to the possible extent.
Blockchain prevents double spending by confirming a transaction by multiple parties before the actual transaction is written to the ledger. It’s no exaggeration to say that the entirety of bitcoin’s system of Blockchain, mining, proof of work, difficulty etc, exist to produce this history of transactions that is computationally impractical to modify.

Q 25. What are the benefits of Blockchain that you know?
blockchain benefits-top blockchain interviews-edureka

Multiple Choice Blockchain Interview Questions

Q 1. Each block of a Blockchain consists of which of the following?

A hash pointer to the previous block

Timestamp
List of transactions
All of the above [Ans]

Q 2. Which of the following is first distributed blockchain implementation?

Q 3. Bitcoin is based on ________ blockchain?

Q 4. Blockchain can be stored as which of the following?

A flat file

A Database

Both of the above [Ans]

None of the above

Q 5. In blockchain, blocks are linked ________?

Backward to the previous block [Ans]

Forward to next block

Not linked with each other

Q 6. The primary benefit of immutability is…

Scalability
Improved Security
Tamper Proof
Increased Efficiency [Ans]

Q 7. Hash identifying each block in the Blockchain is generated using which of the following cryptographic algorithm?

SHA128

SHA256 [Ans]

Q 8. A block in the blockchain can never have more than one parent block?

True [Ans]
False 

Q 9. Blockchain forks can result in which of the following?

Multiple parent blocks

Multiple children blocks [Ans]

Q 10. Which of the following is asymmetric encryption Algorithm?

Blowfish
Twofish

RSA [Ans]

Tripple DEA

Advanced Blockchain Interview Questions

Q 1. Can you tell me some of the widely used cryptographic algorithms?

crypto_algo-top blockchain interview questions-edureka

 Q 2. Tell me more about RSA algorithm? How secure is this algorithm?

RSA-top blockchain interview-edureka

Security of R.S.A.
There are different approaches used in attacking the RSA algorithm:
  • Brute force: It involves all possible secret keys
  • Mathematical attacks: In mathematical attack, we are using different techniques, which is similar in effort to factor the product of two primes

Q 3. Explain the significance of blind signature and how it is useful?

It is a form of digital signature in which the content of a message is disguised (blinded) before it is signed. The resulting blind signature can be publicly verified against the original, unblinded message in the manner of a regular digital signature.
Blind signatures are typically employed in privacy-related protocols where the signer and message author are different parties. Examples include cryptographic election systems and digital cash schemes.

Q 4. What is Secret Sharing? Does it have any benefit in Blockchain technology?

It is a well-known fact that security matters a lot in digital transactions. Secret sharing is an approach meant for same. In Blockchain technology it is an approach that divides secret or personal information into different units and sent them to the users on the network.
The original information can only be combined when a participant to whom a share of the secret is allocated agree to combine them together with others. There are several security-related benefits it can offer in Blockchain technology.

Q 5. Can you explain what are off-chain transactions?

An off-chain transaction is the movement of value outside of the blockchain. While an on-chain transaction – usually referred to as simply ‘a transaction’ – modifies the blockchain and depends on the blockchain to determine its validity an off-chain transaction relies on other methods to record and validate the transaction.

Q 6. What exactly do you know about executive accounting? Does Blockchain support the same?

Executive accounting is nothing but a special type of accounting which is designed exclusively for a business that offers services to the people. There is no strict upper limit on services and a business can manage any through the executive accounting. Blockchain has algorithms that are specially meant to handle executive accounting. In fact, it cut down many problems that are associated with the same.

Q 7. What are the threats to the information you are familiar with?

There are lots of threats to information in the present scenario. Due to increase in online transactions over the internet, many hackers have become active and are adopting new approaches to hack information and servers that contain financial information.
The major threat is software attack, identity theft, information extortion, as well as sabotage. In addition to this, Trojan horses, worms, and viruses are other trouble creators.

Q 8. How will you handle the risk management when it comes to securing the transactions records?

It is basically a process of finding the threats and all the vulnerabilities to the financial records of an organization. The best thing that can be done with this approach is to take the right countermeasures against them immediately.
Another approach is to pay attention to a backup plan. Based on the value of information, more approaches such as buying new risk management software can simply be considered. The prime risk to information is from black-hat hackers.

Q 9. What is 51% attack? 

51% Attack refers to a situation where a group of miners who hold more than 50% of the Network Hash Rate could manipulate with the New transactions (Stopping the transactions to proceed or gaining conformations) or able to reverse the transactions that were recently confirmed and kind of doing Double spend. It is Highly unlikely to be able to do that today but it is possible.

Q 10. What challenges information leak can impose on an organization?

An information leak can cut down the reputation of an organization up to an excellent extent. In addition to this, it can be the reason for organization bearing huge losses. Many organizations who fail to implement security protocols to keep their data secure have already lost the trust of their customers and are struggling very hard to get the same reputation again. The overall profits of any organization can reduce up to 80% if no attention is paid to the online transaction security.

Q 11. What is information processing according to you? What are the key challenges that are associated with it?

The information is often shared on a network. Before actually transmitting it over a network, it needs to be changed into formats that can fit the standards of the channels (the channel is a link between the sender and a receiver).
The work done to convert the information at both sender and receiver end is generally regarded as information processing. The biggest challenge to information processing is securing it during that time. Another challenge is processing bulk information can impose a limit on performance.

Q 12. Name organizations that can use Blockchain technology?

There is no strict upper limit on the category of business who can consider this approach. The fact is almost all the businesses are engaged in online or financial transactions that they need to make to run the processes smoothly. Large-scale corporations, financial institutions, private businesses, government departments and even defense organizations can trust this technology very easily.

Q 13. What are the core requirements for a Business Blockchain?

A business blockchain requires a shared ledger, smart contract functionality, privacy and trust.
Q 14. What are the key principles in Blockchain that are helpful in eliminating the security threats that needs to be followed?
Yes, there are a few principles that need to be followed with respect to time. They are:

1.Auditing
2.Securing applications
3. Securing testing and similar approaches
4. Database security

5. Continuity planning
6. Digital workforce training

All these principles are basic and are easy to implement. They are helpful in making the transactions records useful.

Q 15. What is a security policy?

A security policy defines what exactly needs to be secured on a system. It bounds a network user under some core protocols that they all must agree and follow to enhance the overall security. When it comes to information or financial records of an organization, multiple security policies are implemented than just one.

Q 16.  Is the Blockchain Different from Banking Ledgers?

Banks and accounting systems use ledgers to track and timestamp transactions. The difference is that the blockchain is completely decentralized and an open source. This means that people do not have to rely on or trust the central bank to keep track of the transactions. The peer-to-peer blockchain technology can keep track of all the transactions without the fear of having them erased or lost.
Furthermore, the blockchain, because of its open-source nature, is more versatile and programmable than central banking ledgers. If programmers need new functionality on the blockchain, they can simply innovate on top of already existing software through consensus. This is difficult for central banks because of all of their regulations and central points of failure.


 Q 17.  Can you list some of the popular consensus algorithms? Why we need different consensus mechanisms?
Some of the popular consensus algorithms are:
  • PBFT (Practical Byzantine Fault Tolerance)
  • Proof-of-work
  • Proof-of-stake
  • Delegated proof-of-stake
  • Proof-of-elapsed time
Now, the possible reasons why we need consensus mechanism more than “proof-of-work” are”
  • Different business needs
  • Different use cases
  • Also:
    • Cryptography/Strength of Algorithm
    • Regulation requirements
    • Implementation
    • Performance
    • Tokenization
    • Security
    • Privacy

Q 18. Is there any network specific conditions for using Blockchain technology in an organization?

There is no specific condition of using it. However, the network must be a peer-to-peer network under the concerned protocols.  It validates the new block simply and helps organizations to keep up the pace in this matter without investing in third-party applications.

Q 19. Name the steps that are involved in the Blockchain project implementation?

Well, there are total six steps involved in this process and they are:
  1. Requirement identification
  2. Screen ideas consideration
  3. Project development for Blockchain
  4. Feasible study on the security
  5. Implementation
  6. Controlling and monitoring the project

Q 20. Explain a real-life use-case where Blockchain is being used?
centralized stock-top blockchain interview-edureka

Blockchain in Stock Market
Problems in Present Stock Market:
Centralized and expensive
  • Depositories and transfer agents are a single point of failure
  • Registration, transfer, distribution, scrutineering, courier fees
  • The more widely held, the higher the administration costs
Limited Transparency
  • Information asymmetry leads to market advantages
  • Forged securities still a concern
  • Counterparty risk is systemic
How Blockchain solves the problem
The centralized hub can be removed and the blockchain can be used to directly transfer share ownership between investors.
Blockchain stock-top blockchain interview-edureka
A ledger updated in minutes could save millions in collateral and settlement costs, while also automating banks’ creaky and expensive back office systems.
Blockhain solves-top blockchain interview-edureka
Good work! You have a solid understanding of this important emerging technology!!
Blockchain Interview-top interview questions-edureka