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The gas price is a value set by the creator of the blockchain transaction? (Select best answer.)
Gas has multiple associated terms with it: Gas Prices, Gas Cost, Gas Limit, and Gas Fees. The principle behind Gas is to have a stable value for how much a transaction or computation costs on the Ethereum network.
Which is considered to be the static value for how much a computation costs in terms of Gas?
You are using Truffle for an Ethereum contract and would like to use a default set of contracts and tests from within an empty project directory.
What is the syntax?
The Secure Registry Services enables Secured ____________Registry of base Hyperledger images and custom images containing chaincodes.
What type of registry is implemented?
In blockchains there is the concept of "Group Consensus" and how many members must agree.
You are considering a cryptocurrency and for your privacy and anonymity are number one priority.
Which cryptocurrency should you likely use?
It is impossible to persist media types such as MP3 and MOV on any distributed ledger.
Which technical feature of blockchain best promotes the notion of a blockchain being “censorship resistant”?
The Hyperledger Fabric business network is divided into three categories.
What are the three categories? (Select three.)
When considering a new ERC20 token its best to consider using ____________________.
The ____________of the tree is the topmost node and hence this tree is represented upside down. The bottommost nodes are called as ________nodes. Each node is simply a cryptographic hash of a transaction.
In the above diagram, Transaction A,B, C,C from the leaves of the tree. Select one.
Blockchains are decentralized ledgers which, by definition, are not controlled by a central authority. Due to the value stored in these ledgers, bad actors have huge economic incentives to try and cause faults.
What algo was the original solution to the potential problem as specified by Satoshi?
In Hyperledger Fabric chaincode runs in a secured Docker container isolated from the endorsing peer process?
Which of following scenarios and datasets would be best suited to be utilized by a blockchain solution?
In common blockchain design, which data structure is used to create a lightweight digital fingerprint of all the transactions within a block?
The fabric framework is implemented on ______programming language.
What programming language?
Your customer is an enterprise that is focused on financial sectors.
What type of blockchain would this customer likely want specified for their enterprise?
The merkle tree contains a full list of the transactions on the blockchain?
Which of these reasons is a good reason to choose a conventional database over blockchain to store application data?
Chaincode Services uses Docker to host (deploy) the chaincode without relying on any virtual machine or computer language.
What would be the main reason or best reason that Hyperledger chose containers over virtual machines?
A ____________cipher basically means it is using a fixed key which replaces the message with a pseudorandom string of characters. It is basically the encryption of each letter one at a time.
What is the cipher type?
You are considering writing a smart contract for Ethereum and would like to use a robust programming language.
Which programming language is considered the most flexible and robust for Ethereum?
All blockchain networks and systems require autonomous on-chain code in order to process transactions.
Which of these technical components best represents why cryptocurrency is able to operate successfully?
Consider the following scenario: Due to consistent inaccuracies and outdated real estate listings, a residential real estate company wants to build a blockchain solution that accurately depicts which homes (assets) are available for purchase across all countries/provinces. All available homes should be publicly viewable by the general consumer audience, but certain details of the home, such as history of maintenance, should only be viewable by licensed real estate professionals.
Which architecture would best solve the product need?
Which cryptocurrency is also known as "Smart Money" in the blockchain world?
Anonymity can be protected in blockchain applications by use of which of the following?
A private blockchain like Hyperledger would be the right choice for which scenario:
In Ethereum the difficulty adjustment algorithm is coded in the ___________ file.
When you are developing with Fabric Composer which of the following is true?
Ethereum tries to keep the mining time difference between ____ and _____seconds.
An encryption algorithm transforms plain text into cipher text using a key?
______________is supposed to be the constant cost of network resources/utilization in the Ethereum blockchain?
What is the constant?
Taking a series of unrelated transactions and writing them to a particular block is:
You would like to start your Gethin Fast Sync Mode.
What is the command for this?
Ownership or partial ownership of an asset can be tracked with which type of token?
When a blockchain software is updated with new functionality that breaks or modifies the rules of the previous version of the software, what has just occurred?
Which of these demonstrates the correct order of the lifecycle of a transaction on Ethereum blockchain?
What type of "bug" generally occurs when something isn’t right according to business requirements?
A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that requires________.
What is required?
Which of the following blockchain key components state how the transactions will be confirmed?
Proof of Stake based blockchain systems use what design to permit valid write transactions?
What are two challenges with using a Proof of Work algorithm? (Select two.)
TESTED 18 May 2024