CBSA無料問題集「Blockchain BTA Certified Blockchain Solution Architect」

質問 1

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

（A）Are the aim of all distributed banking and financial institutions

（B）Will never be achievable due to technology limitations

（C）Are the foundation principles that allow blockchain to operate successfully

（D）Are highly valuable in some use cases and completely undesirable in other use cases

正解：C 解答を投票する

質問 2

Taking a series of unrelated transactions and writing them to a particular block is:

（A）Highly insecure and considered bad practice

（B）Most common in public blockchain

（C）Required among all blockchains

（D）Most common in permissioned blockchains

正解：A 解答を投票する

質問 3

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.

（A）Leaf Nodes, Root

（B）Root, Hash

（C）Root, Leaf Nodes

（D）Has, Root nodes

（E）Leaf nodes, Root

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

Which factor influences the gas cost to deploy a Smart Contact on the Ethereum blockchain?

（A）The total size of the complied Smart Contract measured in kilobytes

（B）The types of operations written in code within the Smart Contract

（C）The current Ethereum market conditions

（D）None. Smart Contract deployment has a fixed gas cost

正解：A 解答を投票する

質問 5

Message Calls in the Ethereum EVM is limited to a depth of ______?

（A）256

（B）128

（C）1024

（D）2048

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

What consensus algo uses a method of sending coins to an address where they cannot be retrieved?

（A）Proof of Activity

（B）Proof of Stake

（C）Proof of Burn

（D）Proof of Sending

正解：B 解答を投票する

質問 7

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?

（A）Limit

（B）Fee

（C）Cost

（D）Price

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 8

What is a development language which lets developers solve any class of problem in existence given infinite time and resources?

（A）EVM

（B）Mist

（C）JVM

（D）Turing Incomplete

（E）Solidity

（F）Turing Complete

正解：F 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 9

What does the acronym DAO represent?

（A）Distributed Anonymous Organization

（B）Distributed Anonymous Operations

（C）Distributed Autonomous Operations

（D）Decentralized Autonomous Organization

正解：D 解答を投票する

質問 10

In the EVM every account has a persistent key-value store mapping 256-bit words to 256-bit words called
________

（A）Database

（B）Storage

（C）Space

（D）Gas

（E）Datastore

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 11

What component on the blockchain maintains the "world state"?

（A）.bna

（B）.acl

（C）Reputation Manager

（D）Distributed Ledger

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 12

Which one of the following is a consideration that must be taken into account when using Hyperledger Fabric that you wouldn't need worry about on Ethereum?

（A）How you will provide proper uptime for the network

（B）The fees for deploying and using Smart Contracts

（C）The level of security of Smart Contracts (chaincode)

（D）How often hard forks occurs on the software

正解：D 解答を投票する

質問 13

Which of the following would NOT be true about what a smart contract gives your organization?

（A）Accuracy

（B）Legal Assurance

（C）Trust

（D）Autonomy

（E）Savings

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 14

Anonymity can be protected in blockchain applications by use of which of the following?

（A）Blockchain-based data cubes

（B）Cryptographic hashing

（C）End-to-end encryption

（D）Centralized application hosting

正解：C 解答を投票する

質問 15

When writing and considering push and pull in a smart contract that involves "user" funds would it be better to
____________________?

（A）Pull funds rather than push funds to them automatically

（B）Withdraw funds rather than pull funds to them automatically

（C）Withdraw funds rather than push funds to them automatically

（D）Push funds rather than pull funds to them automatically

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 16

The___________________ is the runtime environment for smart contracts in Ethereum?

（A）EVM

（B）Ether

（C）Mist

（D）Metamask

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 17

______________is supposed to be the constant cost of network resources/utilization in the Ethereum blockchain?
What is the constant?

（A）Tether

（B）Ether

（C）Gas

（D）Wei

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 18

Which of the following blockchain key components state how the transactions will be confirmed?

（A）Validity Rules

（B）Distributed Ledger database

（C）Consensus Algorithm

（D）Encryption

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

CBSA 無料問題集「Blockchain BTA Certified Blockchain Solution Architect」

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