MCQ’s Emerging Technologies for Engineering-04

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MCQ’s Emerging Technologies for Engineering

PART-4
Q:1. In traditional transactions the third party is required?
1.True
2.False
third–party transactions are everywhere in daily life, including Insurance brokers, mortgage brokers, and online payment portals.

Q:2. Traditional Banking system approves transaction at
1.Customer end
2.Bank
3.Institutional members
4.No approval required
Traditional Banking system approves transaction at bank.

Q:3. The third-party charges for validating and recording transactions in traditional transaction systems.
1.True
2.False
Yes,third party charges for validation and transation system.

Q:4. What does a ledger in blockchain does?
1.Mapping between owner and object
2.Identification of objects
3.Identification of owners
4.None of the above
blockchain is a ledger through which data is added and updated in real-time via consensus of the different nodes.

Q:5. Delays in settlements occur in centralized systems.
1.True
2.False
Payment and Settlement Systems (CPSS) of the central banks of the Group … The present consultative report on the design.

Q:6. In a business BlockChain, transactions …
1.are immutable
2.are added to the ledger with appropriate confidentiality
3.are endorsed by a subset of business network participants
4.All the above
blockchain is a distributed ledger that maintains a continuously-growing list of every transaction across every network distributed.

Q:7. In Blockchain we can only track tangible assets.
1.True
2.False
use case for blockchain is to track the ownership and provenance of tangible assets.

Q:8. The transaction details are added to ledger in blockchain
1.Before validation
2.After validation by third party
3.After validation from participants
4.No validation is required
Each block in the chain contains a number of transactions, and every time a new transaction occurs on the blockchain, a record of that transaction is added to every participant’s ledge.

Q:9. To see details of transactions in blockchain, participant has to
1.Request to initiator of transaction
2.Request to central authority
3.Broadcast request
4.See its own copy of blockchain
Before a transaction is added to the blockchain it must be authenticated and … This is done using cryptographic key.

Q:10. Blockchain has
1.Individual ledgers
2.Third party ledgers
3.Shared ledger
4.None of the above
Blockchain technology is most simply defined as a decentralized, distributed ledger that records the provenance of a digital asset.

Q:11. Trust of involved parties in a blockchain process is
1.Low
2.High
3.Depends on third party reputation
4.Not a factor
The underlying blockchain technology allows us to trust the outputs of the system is high.

Q:12. Blockchain may have a single point of failure
1.True
2.False
the distributed and shared nature of the blockchain there is no single point of failure.

Q:13. The permissioned blockchain is
1.Open for all
2.Only authorized participants
3.Both a & b
4.None of the above
blockchain a control layer runs on top of the blockchain that governs the actions performed by the allowed participants and open for all.

Q:14. Proof of work is used for consensus in
1.Permissioned blockchain
2.Permission less blockchain
3.In both a & b
4.None of the blockchains
It requires a participant node to prove that the work done and submitted by them qualifies them to receive the right to add new transactions to the blockchain.

Q:15. Who is not part of consortium group for permissioned blockchain network?
1.Corda
2.Quorum
3.Hyperledger
4.Bitcoin
On the other hand, consortium blockchains are permissioned, meaning that you have to be a member of any organization with access to the ledger.

Q:16. In blockchain each participant has its own copy of ledger.
1.True
2.False
Yes, participant has its own copy of ledger.

Q:17. The blockchain is
1.Distributed
2.Decentralized
3.Both a and b
4.None of the above
Blockchain technology is most simply defined as a decentralized, distributed ledger that records the provenance of a digital asset,

Q:18. Immutable means
1.Only one copy is allowed
2.Efficient
3.Tamperproof
4.Distributed
unchanging over time or unable to be changed.

Q:19. Which characteristic of a blockchain network is also its protection?
1.The greater the number of full independent nodes, the harder it is to compromise the data in the blockchain.
2.The lower the number of miners in the blockchain, the higher the incentive is for securing the network.
3.The more centralized the control of the blockchain is, the harder it is to secure the data and avoid fraud.
4.The more complicated the Proof of Work (PoW) algorithm is, the more rewarding it is to secure the network.
The blockchain records are protected through cryptography, where network users have their own private and secure keys. This key is assigned directly to the transaction keys, and it acts as a personalized digital signature

Q:20. All transactions are ________________ secured and digitally signed.
1.Centrally
2.Individually
3.Not
4.Virtually
electronic wallet (digital certificate) and a transaction is conducted … stream of 0.25% from every transaction secured by Microsoft’s integrated SE

Q:21. Each block has its own unique hash.
1.True
2.False
Yes,every block has its own unique hash.

Q:22. When a block is added to blockchain
1.Only owner node has its copy
2.Every node in network is given a copy
3.Will be notified after a fixed number of blocks addition
4.Kept secret
Whenever a new block is added to the blockchain, every computer on the network updates its blockchain to reflect the change

Q:23. Public blockchains give an incentive to encourage users to mine blocks and secure the network. What incentive is this?
1.Public blockchains allow users to create tokens to sell on secondary markets.
2.Public blockchains do not offer rewards, because they are open source.
3.Public blockchains offer cash rewards for running mining nodes.
4.Public blockchains offer rewards for mining in the form of cryptocurrency.
The federated nodes are rewarded with Factoids. The nodes can sell Factoids back into the market to those who wish to use the Factom blockchain

Q:24. Miner is
1.A node
2.Third party
3.Controller of network
4.Noe of the above
A peer-to-peer computer process, Blockchain mining is used to secure and verify bitcoin transactions.

Q:25. In blockchain the network is
1.M2M
2.P2P
3.LAN
4.Piconet
A blockchain network is a technical infrastructure that provides ledger and smart contract (chaincode) services to applications.

Q:26. Blockchain is ______________ list of blocks.
1.An ordered
2.Scattered
3.Tree
4.Unordered
A blockchain, originally block chain, is a growing list of records, called blocks, that are linked using cryptography.

Q:27. Nonce is a ______ bit value.
1.28
2.8
3.32
4.4
The “nonce” in a bitcoin block is a 32-bit (4-byte) field whose value is adjusted by miners.