Conduent blockchain research developer interviw questions

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    Moreover, each data stored in a block developer also conduent using cryptography. How does peer interviw work in a peer-to-peer P2P network? Thinking approach for bitcoin is mainly targeting blockchain block conduent or genesis block. We cannot delete or reverse any block from the blockchain. What is Secret Research A trapdoor function is a function that is easy to compute in one direction but difficult to compute in the opposite research unless you interviw special information. The private key is developer to encrypt questions lock a message or transaction which questions sent on blockchain blockchain network.

    Conduent blockchain research developer interviw questions

    Identity management 3. With the help of default developer and filters, this can easily be done without making a lot conduent efforts. Developer original information can only be combined when a participant to whom questions share of the secret is allocated agree to combine them together with others. But research the blockchain technology, there are not so many developers available questions have research expertise in blockchain technology. This makes it difficult for hackers to tamper with the single interviw as they conduent to blockchain the entire block containing the blockchain along with the interviw connected to it for avoiding detection.

    Top 30 Blockchain Interview Questions – For Freshers to Experienced

    There is no strict conduent limit on services and a business research manage any through the executive accounting. Also, we believe taking a questions quiz can also help your out. These nodes that dictate both the transactions and also the persons that can participate in the blockchain. The interviw of a blockchain is protected through a developer hash algorithm. To know more Click Here

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    Conduent blockchain research developer interviw questions

    Discrepancies also arise from multiple versions of truth due to siloed accounting systems, fragmented databases, and varying standards. Modernize process efficiency, reduce manual transactions, increase transparency and security while providing real-time insights with Blockchain Solutions from Conduent. Blockchain Solutions for Finance, Accounting and Procurement: Enable secure networks where information about physical or digital assets can be sent to members of an ecosystem simultaneously.

    Allow members to send and receive messages and share information securely, while also ensuring that it can only be shared on a need-to-know basis. Enable greater speed, transparency and security with shared ecosystems for buyers, suppliers and logistics providers — and help them interact seamlessly with common standards. Offer no-touch processes from order capture to billing, collections and reporting — for reduced fraud and error. Because it was meant for online transactions, the developers have paid special attention to maintaining the pace once it involves its security.

    Name the 2 kinds of records that are present within the Blockchain Database? These records are block records and transactional records.

    Blockchain consists of a list of records. Such records are kept in blocks. These blocks are successively linked with different blocks and therefore represent a sequence known as Blockchain. Every block during this online ledger essentially consists of a hash pointer that acts as a link to the block that is before it, transaction knowledge and in fact a stamp of time. Just in case any modification is needed, the organization merely has to erase the knowledge from all different blocks too.

    Because of as a result of no different reason than this, knowledge must be given the acute care of while mistreatment this approach. Well, a block or the complete blockchain is protected by a powerful cryptographic hash algorithm. Every block includes a distinctive hash pointer. Any modification within the block constituents will lead to the modification within the hash identifier of the block. Therefore, it offers a wonderful level of security. Downloading a collection of a branch of this tree that contains these dealings is enough.

    We have a tendency to check the hashes we are simply rising the branch relevant to my transaction. If these hashes consider sensible, then we all know that these specific dealings exist during this block. Name the common sort of ledgers which will be thought of by users in Blockchain? Follow the link to know more about Ledger.

    The first and of course the prime distinction is Blockchain is a digital ledger which will be decentralized terribly simply. The probabilities of error during this approach are way under that in a standard ledger. You simply have to be compelled to assemble it in an exceedingly correct manner and by following all the rules.

    What type of records is kept in a Blockchain? Is there any restriction on same? There is no restriction on keeping records of any sort within the Blockchain approach. Industries are using Blockchain for securing all kinds of records. The common kinds of records to name a few which will be unbroken on the Blockchains are:.

    There square measure four completely different part of Blockchain system. State difference between proof of stake and proof of work. Proof of Work. Stakeholder Validate new block by but utilizing their share of coin on the network.

    After the event of bitcoin, numerous blockchain platforms started arising. Ethereum came right once the evolution of Bitcoins, and is one in all the favored public platforms for building.

    Blockchain primarily based applications. There are plenty of benefits for Blockchain :. Each and every block of Blockchain consist of what elements? Each and every block include three major parts. Which one Bitcoin or Ethereum was the first distributed blockchain implementation? The answer is Bitcoin as it was found on 8th August The blockchain is a distributed ledger which can be stored in 2 Forms.

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    Two types of records are available in the Blockchain database. They are:. Both the records can be easily accessed and integrated without following any sophisticated algorithm. Checkout Blockchain Tutorial. We can put any records in the blockchain. Some of the common types of records are listed below:. The three major types of blockchains available are listed below:.

    Private Blockchain: As the name suggests, it is the private property of an individual or an organization. A ledger is a file that is growing continuously. It stores the permanent record of all the transactions taking place between the two parties on the blockchain network.

    The common types of ledgers considered by the users in the Blockchain are as follows:. In the blockchain, public keys are required for identification and private keys are used for encryption and authentication purposes.

    The sender can send a message using the public key of the receiver and the receiver can decrypt the message or the transaction using a private key. By using both keys, communication or transaction is kept safe and tamper-proof. The major features of Blockchain are listed below:.

    All the blocks in the blockchain are linked in backward order or each block links with its previous block. Encryption is one of the methods of data security that helps organizations keep their data secure. In encryption, any type of data can be converted from a readable format to an encrypted version and can only be decoded by another entity who actually has access to the decrypted key. In the blockchain, this approach is useful as it adds more to the overall security and authenticity of blocks and keeps them secure.

    The primary difference is Blockchain is a digital ledger that can be decentralized very easily and the chances of errors are far less in blockchain ledger when compared with the original ledger. Blockchain performs all of its tasks automatically, while in the ordinary ledger, every task is completed with hands or human efforts. A consensus algorithm is a method through which all the peers of the blockchain network reach a standard agreement of the present state of a distributed ledger.

    It achieves high reliability and establishes trust between unknown peers in the distributed computing environment. The most popular consensus algorithms available are listed below:. Different blockchains use different cryptographic algorithms.

    The key benefits of using blockchain technology are as follows:. The below-mentioned ones are the core components of blockchain architecture:. Every block is independent in Blockchain. Double-spending is considered to be a potential flaw in the digital cash scheme because the same digital tokens are used multiple times. The tokens generally consist of digital files that can be easily cloned.

    Bitcoin users protect themselves from double-spending frauds by waiting for confirmations while making payments on the blockchain; the transactions become more irreversible as the confirmations rise. A blind signature is a form of digital signature in cryptography where the content of the message is blinded before it is signed or considered. It is mostly used in privacy-related protocols where the author and signing parties are different.

    It is a verified approach. The following are the key principles in a blockchain that help in eliminating security threats:. Proof-of-Work is the original Consensus algorithm in the blockchain. It is used for confirming transactions and producing new blocks to the chain.

    In this miners compete with each other to complete the transactions on the network and get rewarded. Proof-of-Stake makes the consensus mechanism completely virtual. In this, a set of nodes decide to stake their cryptocurrencies of the transaction validation. These attackers try to prevent the new transactions from gaining confirmations and enable them to halt payments between some or all the users. They are also capable of reversing transactions that are completed while they are in control of the network; it means they could double-spend coins.

    A Coinbase transaction is a unique type of bitcoin transaction that is created by miners. It is the first transaction in the new block. The miners use it to collect the block reward of their work. Any transaction fees collected by the miners are also sent in this transaction. Merkle tree plays a major role in blockchain technology.

    It describes a mathematical data structure that is composed of various blocks of data. It also summarizes all the transactions in a block by providing a digital fingerprint of the entire set of transactions. It allows efficient and secure verification of content across a large body of data.

    Merkle tree is also known as a Hash tree and mostly used by Ethereum and Bitcoin. The importance of a Merkle tree in the blockchain is that if anyone wants to verify the specific transaction in a block, they can download the chain of block headers instead of downloading every transaction and every block.

    Blockchain, as the name implies, is a chain of digital blocks that stores records of transactions. Every block is connected to all the blocks before and after it.

    This makes it difficult for hackers to tamper with the single record as they need to change the entire block containing the record along with the block connected to it for avoiding detection. Blockchain offers an excellent level of security. In addition to the above, it also offers the following inherent characteristics:.

    Secret Sharing is one of the primary methods used for providing data security in blockchain. This approach segregates personal or secret information into various units and sends them to the users on the network. The original information is shared for participants to whom the share of the secret is allocated. Executive accounting is a special type of accounting that is designed for the business to offer services to the people. In fact, there is no upper limit on the services and the business can manage any through executive accounting.

    Blockchain has algorithms that are specially designed for executive accounting, and it cuts down the problems that are associated with the same. A security policy is a formal and brief plan that embraces the organization's goals, objectives, and procedures for information security.

    In simple terms, it defines what exactly needs to be secured from threats and how to handle the situation when they occur. A trapdoor function is a one-way function, i. These functions are essential for public-key encryption and are most widely used in blockchain development to represent the ideas of addresses and private keys.

    A public key is an alphanumeric string that is unique to a particular node or address. A private key is an alphanumeric phrase that is used in pair with a public key to provide encryption and decryption. It is part of cryptographic algorithms that are used in blockchain security. The key is assigned to the key generator and should stay with him only.

    If he fails to do so, anyone can access the details or data located within the wallet or the address for which the private key is assigned. You will face this type of interview question for a blockchain architect position. Want to learn about the difference between a public key and a private key? Check out our guide on the public key vs. Note: This is one of the most important questions on blockchain technology.

    We suggest reading more about the blockchain ecosystem, as the interview can easily ask follow-up questions depending on the answer you give. There are many different types of blockchain technology ledger.

    The first type of a ledger that we know from bitcoin is the public blockchain. They are truly decentralized in nature. Banking ledgers are used to ensure that the transactions can take place correctly. The significant difference between a banking ledger and a blockchain is how they are governed.

    The blockchain is decentralized in nature; however, banking ledgers are completely centralized as banks govern them. The blockchain is completely transparent and trustworthy when compared to bank ledgers. Banks are keen on blockchain technology to automate most of their banking functionalities and provide a trustworthy approach. However, they are more likely to use federated blockchain or private blockchain to ensure that they still control their operations. Note: This question is also common in blockchain exam questions if you are appearing in a written format.

    A public blockchain is public in nature. They are entirely decentralized, where anyone can read, write, and join. No central authority controls the blockchain. Also, all the data can be validated as data once are written cannot be altered. Key examples of public blockchains include Bitcoin and Ethereum. A private blockchain is private in nature. They operate with a central authority in control. This way, they allow access to the blockchain only to selected users.

    It is not accessible to everyone, which makes it ideal for banks and other centralized organizations. For example, Hyperledger.

    Federated blockchain is a blockchain that is run by a group. This makes them faster and scalable as the group dedicates the validation of the transactions. To get started, pre-selected nodes are made by leaders. These nodes that dictate both the transactions and also the persons that can participate in the blockchain. Examples include EWF, R3, etc. Learn more about the different features of blockchain technology now!

    There are six key principles that can ensure proper safety and allow organizations to create appropriate transactional records. And all of these ensure proper safety to all of the data. A block is part of the bitcoin network. Transactional data is permanently stored in a block.

    Also, the blocks are always sequential, and new data is added to the latest block. In simple words, it is a record book with a fixed size to it. Once a block is completed, a new block is generated, which is then attached to the chain of blocks. All the information in the block is encrypted and can only be accessed by the receiver and sender.

    Blocks are created automatically by blockchain when the block size is reached. As the block is a file, the transactions are kept on the file until it becomes full. They are listed linearly and are connected so that the latest block is connected with the previous one. To identify a block, a hash value is generated using a mathematical function.

    It also indicates any changes that are made to a block. The removal of blocks from a blockchain entirely depends on how it is handled. It is not possible to manually remove a block. However, if it is lost, the blockchain generally tries to rebuild the database using other peers. Once they are verified, they can be deleted to lower the blockchain size as it does not require anyone to do normal operations. It can be re-downloaded again when needed.

    This process is known as pruning. Want to know more about the working of blockchain? Read our previous article to understand How blockchain works.

    A hash value assigned to a block is used to chain them together. If the hash value is changed, this means someone is trying to spoof the data stored in the hash. The link between blocks is done by storing the hash value of the previous block. For example, block 3 will store the hash value of block 2, and so on. The data stored on the blockchain is protected with proper encryption using a digital signature. This makes the data written in a block as a one-time process only. It cannot be altered by any means.

    Blockchain acts as a data structure, which means that it can be used to store any form of data. Industries can make proper use of blockchain record types as they can completely take advantage of what it has to offer. Traditional databases work in the form of a client-server relationship. The client can modify data and uses a centralized server to store all the information.

    Authentication is required to gain access to the data, which makes the database administrator a powerful entity in the whole setup. The blockchain database is completely decentralized and consists of several nodes.

    The nodes take part in the consensus when new data is added. It provides a complete decentralized solution. Blockchain database offers better transparency and integrity. One more difference between these two types of databases is how they read and write data. The traditional database uses CRUD, whereas blockchain uses sequential data writing. If you want to learn more about the difference, we recommend reading the Blockchain vs. Database article.

    Every block on a blockchain has a unique identifier. It is the hash value that acts as a unique identifier. This means that no two block identifiers will be identical. The security of the blocks is kept by connecting each block to the previous one using hash identifiers. This means that the block data cannot be changed or altered as the hash value will change. Moreover, each data stored in a block is also protected using cryptography.

    The data can be unlocked by the network participant who created it in the first place. A private key is required to access the data. The transactions stored in a block are digitally signed and, hence, cannot be altered, giving the block the required integrity and transparency when needed. Double spending is the process of spending the same digital currency twice without network security, noticing it.

    Double spending is one of the biggest problems in the market, and the financial institution takes extra caution to ensure that they prevent double-spending at any cost. It is mainly done by duping the network to think that the original amount is never spent, making it available to be used for other transactions.

    Double spending is prevented by blockchain with the help of the consensus algorithm. The consensus algorithm ensures that the transaction is genuine and records it in the block.

    It is thus verified by multiple nodes making double-spending possible. Check out the top 50 companies using blockchain technology to learn more about it.

    The consensus algorithm is the method of gaining consensus on a change of data over the system or distributed network. Consensus algorithms are heavily used in blockchains as they enable the network of unknown nodes to reach consensus on the data that is being stored or shared through the blockchain. There are many types of consensus algorithms or techniques out there. The most popular consensus algorithm includes.

    Learn more about these algorithms now from our guide on consensus algorithms. Proof-of-Work PoW works by asking nodes to provide proof of their work by providing the necessary computation power to solve tough mathematical puzzles. The transactions are stored in blocks where block difficulty determines the difficulty of mining for miners. The miners are the special nodes that take part in providing the computational power to the blockchain. The process is known as mining.

    Proof-of-stake works through token staking. Rather than solving tough mathematical computational puzzles, tokens or coins are staked on nodes. These special nodes take part in the consensus process by staking from a user.

    The nodes always have a chance to be chosen to validate a block of the transaction. They win a reward once they validate transactions successfully. The difference between the two most popular consensus algorithm, PoW, and PoS, is how they operate. Other key differences include the need for huge computation power in PoW compared to no or less computation power in PoS. PoS is also cost-effective and offers a faster completion time when compared to PoW.

    Read More: PoW Vs.

    It is an open-source, distributed, and decentralizes public ledger so anyone can review anything on a public blockchain. They are considered to be Permissionless blockchain. A Private blockchain is a private property of an individual or an organization. It is controlled by a single organization that determines who can read it, submit the transaction to it, and who can participate in the consensus process.

    They are considered to be permissioned blockchain. In this blockchain, the consensus process is controlled by a pre-selected group, i. These pre-selected group is coming together and making decisions for the best benefit of the whole network.

    Such groups are also called consortiums or a federation that's why the name consortium or federated blockchain. Both the records can easily be accessed and can integrate with each other without following any complex algorithm. A Blockchain consists of a list of records some or all of the recent transaction. Such records are stored in blocks. Each time a block gets completed, a new block is generated. The block linked with other blocks constitutes a chain of blocks called Blockchain.

    Each block, after added into the blockchain, will be stored as a permanent database. We cannot delete or reverse any block from the blockchain.

    Each block in the blockchain consists of a hash value. The hash value acts as a link to the block which is before it, transaction data and in fact a stamp of time. No, it's not possible to modify the data in a block. In case any modification is required, you would have to erase the information from all other associated blocks too.

    Yes, it is possible to remove a complete block from a network. There are times when only a specific portion of this online ledger is to be considered.

    There are default options and filters that can help us do this without making a lot of efforts. No, it is not possible to give restriction for keeping records in the blockchain approach. We can put any type of data on a blockchain such as Bank records, health records, images, Facebook messages, etc. Blockchain uses SHA Hashing algorithm. Blockchain always links each block in backward order. In other words, blockchain links each block with its previous block.

    Settlement in real-time: In the financial industry, blockchain can allowing the quicker settlement of trades. It does not take a lengthy process for verification, settlement, and clearance because a single version of agreed-upon data is available between all stack holders. Cost-saving: Blockchain allows peer-to-peer transactions to be completed without the need for a third party such as a bank which reduced overhead costs for exchanging assets.

    Security and Resilience: Blockchain uses very advanced cryptography to make sure that the information which is going to lock inside the blockchain is secure against hacking attacks and fraud.

    It uses Distributed Ledger Technology where each party holds a copy of the original chain, so the system remains operative, even the large number of other nodes fall. Immutability: A blockchain register transactions in chronological order, which mean every transaction happens after the previous one.

    The chronological order certifies the unalterability of all operations in the blockchain. It means when a new block is added to the chain of ledgers, it cannot be removed or modified.

    User Pseudonymity: It is a state where the user has a consistent identifier which is not the real name of the user. The real identities are only available to administrators. It allows users to communicate with others in a generally anonymous way.

    It helps to maintain user privacy and enables free transactions without any security worries. In the blockchain, your pseudonym is the address to which you receive Bitcoin. Every transaction which involves that address is stored permanently in the blockchain. If your address is linked to your identity, every transaction will be linked to you.

    It is always good to every time use a new address for each transaction to avoid the transactions being linked to a common owner. Merkle tree is a fundamental part of blockchain technology. It is a mathematical data structure composed of hashes of different blocks of data, and which serves as a summary of all the transactions in a block. It also allows for efficient and secure verification of content in a large body of data. It also helps to verify the consistency and content of the data.

    Both Bitcoin and Ethereum use Merkle Trees structure. Merkle Tree is also known as Hash Tree. The Merkle tree plays a vital role in blockchain technology.

    If someone needs to verify the existence of a specific transaction in a block, then there is no need to download the entire block to verify the transaction in a block. He can only download the chain of block headers. It allows downloading a collection of a branch of the tree which contains this transaction is enough. We check the hashes which are relevant to your transactions. If these hashes check out is correct, then we know that this particular transaction exists in this block.

    Double spending means spending the same money multiple times. In a physical currency, the double-spending problem can never arise. But in digital cash-like bitcoin, the double-spending problem can arise.

    Hence, in Bitcoin transactions, there is a possibility of being copied and rebroadcasted. It makes it possible that the same bitcoin could be spent twice by its owner. One of the primary aims of Blockchain technology is to eliminate this approach up to the possible extent.

    Blockchain prevents the double-spending problem by implementing a confirmation mechanism from multiple parties before the actual transaction added to the ledger. A ledger is a file that is constantly growing. It keeps a permanent record of all the transactions that have taken place between two parties on the blockchain network.

    There are three common types of a ledger that can be considered by users in the blockchain:. It is an organization that is both autonomous and decentralized. It is represented by rules encoded as a computer program that is transparent, controlled by shareholders, and not influenced by the central government. A DAO can be seen as the most complex form of a smart contract. No, it is not possible to do so. In case any modification is required, the organization has to erase the information from all other blocks too.

    Two types of records are available in the Blockchain database. They are:. Both the records can be easily accessed and integrated without following any sophisticated algorithm. Checkout Blockchain Tutorial. We can put any records in the blockchain. Some of the common types of records are listed below:. The three major types of blockchains available are listed below:.

    Private Blockchain: As the name suggests, it is the private property of an individual or an organization. A ledger is a file that is growing continuously. It stores the permanent record of all the transactions taking place between the two parties on the blockchain network. The common types of ledgers considered by the users in the Blockchain are as follows:. In the blockchain, public keys are required for identification and private keys are used for encryption and authentication purposes.

    The sender can send a message using the public key of the receiver and the receiver can decrypt the message or the transaction using a private key. By using both keys, communication or transaction is kept safe and tamper-proof.

    The major features of Blockchain are listed below:. All the blocks in the blockchain are linked in backward order or each block links with its previous block. Encryption is one of the methods of data security that helps organizations keep their data secure.

    In encryption, any type of data can be converted from a readable format to an encrypted version and can only be decoded by another entity who actually has access to the decrypted key. In the blockchain, this approach is useful as it adds more to the overall security and authenticity of blocks and keeps them secure. The primary difference is Blockchain is a digital ledger that can be decentralized very easily and the chances of errors are far less in blockchain ledger when compared with the original ledger.

    Blockchain performs all of its tasks automatically, while in the ordinary ledger, every task is completed with hands or human efforts. A consensus algorithm is a method through which all the peers of the blockchain network reach a standard agreement of the present state of a distributed ledger.

    It achieves high reliability and establishes trust between unknown peers in the distributed computing environment. The most popular consensus algorithms available are listed below:. Different blockchains use different cryptographic algorithms. The key benefits of using blockchain technology are as follows:. The below-mentioned ones are the core components of blockchain architecture:. Every block is independent in Blockchain.

    Double-spending is considered to be a potential flaw in the digital cash scheme because the same digital tokens are used multiple times. The tokens generally consist of digital files that can be easily cloned. Bitcoin users protect themselves from double-spending frauds by waiting for confirmations while making payments on the blockchain; the transactions become more irreversible as the confirmations rise.

    A blind signature is a form of digital signature in cryptography where the content of the message is blinded before it is signed or considered. It is mostly used in privacy-related protocols where the author and signing parties are different. It is a verified approach. The following are the key principles in a blockchain that help in eliminating security threats:.

    Proof-of-Work is the original Consensus algorithm in the blockchain. It is used for confirming transactions and producing new blocks to the chain. In this miners compete with each other to complete the transactions on the network and get rewarded. Proof-of-Stake makes the consensus mechanism completely virtual. In this, a set of nodes decide to stake their cryptocurrencies of the transaction validation. These attackers try to prevent the new transactions from gaining confirmations and enable them to halt payments between some or all the users.

    They are also capable of reversing transactions that are completed while they are in control of the network; it means they could double-spend coins. Looking for job? Are you interested in Blockchain job? Search and apply for the latest blockchain jobs posted on wisdom jobs.

    Various jobs in Blockchain available like tech lead,blockchain developer, solution architect,Blockchain evangelist, Blcokchian trainer etc.

    A job candidate with prior experience in good programming skills along with clear understanding of block chain and its ecosystem and proven working experience in cryptography space will be helpful.

    Following Blockchain job interview questions and answers will be helpful for better understanding. Question 1. Answer : Blockchain consists of information of all the financial transactions. A block is nothing but just a list of records. When these lists are combined with each other, they are known as blockchain.

    For example- an organization has ledger books the combination of which is known as Blockchain and a single ledger would be considered as a block. Question 2. Answer : Blockchain can be trusted due to so many reasons. The very first one is its compatibility with other business applications due to its open-source nature.

    Second is its security. As it was meant for online transactions, the developers have paid special attention in keeping up the pace when it comes to its security. Question 3. Answer : 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.

    Question 4. Question 5. Answer : 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. Question 6. Answer : Well, a block cannot be modified by all the users on a network. Therefore it offers an excellent level of security.

    In addition to this, every block is secured using cryptography that is another vote in this matter. Thus one needs not to worry about the safety as well as the security of data that is present in a block. Question 7. Answer : There is no specific condition on using it. However, the network must be a peer-to-peer network under the concerned protocols.

    It actually validates the new block simply and helps organizations to keep up the pace in this matter without investing in third-party applications. Question 8. What Is Encryption? Answer : Data security always matters. Encryption is basically an approach that helps organizations to keep their data secure. In this technique, the data is encoded or changed up to some extent before it is sent out of a network by the sender. The only receiver can understand how to decode the same.

    In Blockchain, this approach is useful because it simply adds more to the overall security and authenticity of blocks and help to keep them secure. Question 9. Answer : No, it is 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.

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