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Blockchain CBSA Practice Test - Questions Answers, Page 22

Question list

List of questions

Question 211

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The primary difference between a blockchain and blockless solution is?

Question 212

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In its simplest form, user identity on a blockchain can be unique and secure:

Question 213

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In any cryptographic system, the key components are: the secret, the function, the key and the _______.

Question 214

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In common blockchain design, what is one common method to "chain" blocks of data together in order?

Question 215

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Byzantine Fault Tolerance can be achieved only through Proof of Work.

Question 216

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A Blockchain network can be best categorized as:

Question 217

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In regard to blockchain, complete autonomy, transparency, and decentralization:

Question 218

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Which of these desired outcomes is best obtained through a Blockchain solution?

Question 219

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Consider the following scenario. A startup is building a chat app for smart phones where the messages sent between users are anonymous and get destroyed within 24 hours of being sent. Which archite

Question 220

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One consideration that should be taken into account when building a product on a public blockchain is:

Question 211

The primary difference between a blockchain and blockless solution is?

Blockless solutions are slower

Blockless solutions are less reliable

Transactions are not verified by the entire network in a blockless environment

Blockless solutions do not work on mobile devices

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Question 212

In its simplest form, user identity on a blockchain can be unique and secure:

By users utilizing public blockchains

User identity cannot yet be protected on blockchain systems

Through cryptographic hashing

By users utilizing permissioned blockchains

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Question 213

In any cryptographic system, the key components are: the secret, the function, the key and the _______.

Cipher

Hash

Token

None of the above

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Question 214

In common blockchain design, what is one common method to "chain" blocks of data together in order?

Store the hash of the previous block within the current block

Having the genesis node store an ordered, mutable array of block hashes

Writing each block into a separate file on the hard disk of the node

Assigning an order number to each block so they can be sorted when requested

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Question 215

Byzantine Fault Tolerance can be achieved only through Proof of Work.

FALSE

TRUE

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Question 216

A Blockchain network can be best categorized as:

A centralized network

A decentralized peer-to-peer network

A series of nodes managed by a genesis node

A distributed network centralized ledgers

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Question 217

In regard to blockchain, complete autonomy, transparency, and decentralization:

Are the aim of all distributed banking and financial institutions

Will never be achievable due to technology limitations

Are highly valuable in some use cases and completely undesirable in other use cases

Are the foundation principles that allow blockchain to operate successfully

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Question 218

Which of these desired outcomes is best obtained through a Blockchain solution?

Pending financial transactions need to be stored until completed and then should be deleted

A website that shows current data from various stock markets

A mobile app that displays information about today's weather

None of the above

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Question 219

Consider the following scenario. A startup is building a chat app for smart phones where the messages sent between users are anonymous and get destroyed within 24 hours of being sent.

Which architecture would best solve the product need?

Ethereum for token management and chat messages; Mobile apps use JSON-RPC to communicate directly with Smart Contracts

Private blockchain to persist chat messages; Custom built token system with private blockchain smart contract

Token management for shareholders in a public blockchain; Mobile apps and data management built on existing multitier systems without use of blockchain

Hybrid blockchain for token management with Proof of Stake; private blockchain to persist the chat messages

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