BTA Certified Blockchain Solution Architect
Last Update 17 hours ago
Total Questions : 229
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Ethereum has a metric system of denominations used as units of ether.
What is the smallest denomination of Ether?
In Hyperledger there are three distinct types of nodes.
What are the three types of nodes? (Select three.)
1. Client Node: That initiates the transaction
2. Peer Nodes: Commits Transaction & keeps the data in sync across the ledger
3. Ordered: They are the communication backbones and responsible for the distribution of
the transactions.
In Hashcash, miners all compete to look for a so called. "____________"which, if provided as input (together with other parts of a block header) to a hash function, yields an output that’s numerically small enough to claim the next block reward.
Which of these technical components best represents why cryptocurrency is able to operate successfully?
In Ethereum the difficulty adjustment algorithm is coded in the ___________ file.
Secure Hash Algorithm (SHA-256) output is always 256 bits or 32 bytes in length regardless of the length of the input (even if input is millions of bytes). Select best answer.
What type of attack would be considered a very large flaw in public blockchains such as Bitcoin’s Blockchain where the majority of hashpower could possibly be controlled thru an attack?
What is the specific attack Bitcoin could be exposed to?
The most popular Ethereum development framework is currently Truffle.
What are three features of Truffle? (Select three.)
In Ethereum a block contains two very important parameters. (Select two.)
Which of the following enterprise blockchain platforms does not have smart contract functionality?
You are considering writing smart contracts and there are a few different languages you can consider. (Select two.)
When specifying blockchain technologies, it is important to understand its benefits and its challenges.
What would be two challenges of blockchain technology adoption to an enterprise? (Select two.)
What type of "bug" generally occurs when something isn’t right according to business requirements?
By design, permissioned blockchains such as Hyperledger Fabric are not capable of creating or utilizing cryptocurrency.
What type of encryption is shown below and is commonly used in blockchain cryptography?
A private blockchain like Hyperledger would be the right choice for which scenario:
What are two reasons that you would consider implementing a POW algo in your blockchain? (Select two.)
The gas price is a value set by the creator of the blockchain transaction? (Select best answer.)
Regarding Ethereum contracts, the contracts can call (perform) two specific message calls. The message calls are either _____________ or __________? (Select two.)
In common blockchain design, identity and transaction approval is possible through:
In the EVM every account has a persistent key-value store mapping 256-bit words to 256-bit words called ________
Every node needs to keep track of time AND it needs to be in synch with its other peer nodes on the blockchain. In Bitcoin for example the current median for time is around?
Consider the following scenario: A solo app developer wants to create their own cryptocurrency and build a blockchain based that allows users to buy and sell second-hand items with that cryptocurrency from each other. Before the transaction is considered complete, the purchaser must put the funds in an escrow service and the sender must enter the courier tracking number into that same escrow. Time is of the essence and this developer doesn’t want to worry about networking of infrastructure. This app must be fully autonomous or “decentralized”.
Which architecture would best solve the product need?
The___________________ is the runtime environment for smart contracts in Ethereum?
A product’s supply chain data is stored on blockchain. Only members of the product supply chain can write announcements to the blockchain but any consumer can query this data in a store to learn more about the product they want to buy. This is an example of a ____/____ blockchain.
TESTED 28 Mar 2024
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