Question 1

You are trying to generate a random number in Ethereum blockchain. What is the best way?

Accepted Answer

A)  Wikipedia 
B)  Coindesk 
C)  Coinbase 
D)  Randao 
E)  ERC20 
A)  Wikipedia 
B)  Coindesk 
C)  Coinbase 
D)  Randao 
E)  ERC20

Question 2

When you are developing with Fabric Composer which of the following is true?

Accepted Answer

A)  Decreases the time of development 
B)  Simplifies the development of applications 
C)  Simplifies the integration of client applications 
D)  Increases the time of development 
A)  Decreases the time of development 
B)  Simplifies the development of applications 
C)  Simplifies the integration of client applications 
D)  Increases the time of development

Question 3

Ownership or partial ownership of an asset can be tracked with which type of token?

Accepted Answer

A)  Equity 
B)  Utility 
C)  Ethereum 
D)  Game-based 
A)  Equity 
B)  Utility 
C)  Ethereum 
D)  Game-based

Question 4

A Blockchain network can be best categorized as:

Accepted Answer

A)  A centralized network 
B)  A decentralized peer-to-peer network 
C)  A series of nodes managed by a genesis node 
D)  A distributed network centralized ledgers 
A)  A centralized network 
B)  A decentralized peer-to-peer network 
C)  A series of nodes managed by a genesis node 
D)  A distributed network centralized ledgers

Question 5

One critical business consideration you must account for when choosing Hyperledger Fabric over Ethereum is:

Accepted Answer

A)  Who you will have host the nodes and how will you deploy the network 
B)  If your blockchain will use Proof of Work or Proof of Stake 
C)  Which cryptographic algorithms Hyperledger Fabric employs 
D)  How you will implement your own gas/fee system 
A)  Who you will have host the nodes and how will you deploy the network 
B)  If your blockchain will use Proof of Work or Proof of Stake 
C)  Which cryptographic algorithms Hyperledger Fabric employs 
D)  How you will implement your own gas/fee system

Question 6

To approve pending ledger transactions, consensus algorithms often implement:

Accepted Answer

A)  Byzantine Fault Tolerance 
B)  Access Control 
C)  Kerckhoffs's Principle 
D)  Common Weakness Enumeration 
A)  Byzantine Fault Tolerance 
B)  Access Control 
C)  Kerckhoffs's Principle 
D)  Common Weakness Enumeration

Question 7

What are some advantages of Proof of Stake(POS) mining over Proof of Work(POW) mining? (Select three.)

Accepted Answer

A)  Energy efficient in regards to that it could consume for electricity as compared to PoW 
B)  Faster Hashing algorithms 
C)  No need for expensive compared to POW 
D)  Faster validations compared to POW 
E)  Better blockchain security compared to POW 
A)  Energy efficient in regards to that it could consume for electricity as compared to PoW 
B)  Faster Hashing algorithms 
C)  No need for expensive compared to POW 
D)  Faster validations compared to POW 
E)  Better blockchain security compared to POW

Question 8

If a company desires to create a unique cryptocurrency and launch a new blockchain network to host it.

Accepted Answer

A)  They must use ERC20 standard for the token, clone the Ethereum Virtual Machine, then launch a series of nodes 
B)  They must use ERC20 standard for the token and can use any open source blockchain tool/system to launch a series of nodes 
C)  They can both create their own cryptocurrency and launch their own blockchain network with any common open source blockchain tool/system 
D)  None of the above 
A)  They must use ERC20 standard for the token, clone the Ethereum Virtual Machine, then launch a series of nodes 
B)  They must use ERC20 standard for the token and can use any open source blockchain tool/system to launch a series of nodes 
C)  They can both create their own cryptocurrency and launch their own blockchain network with any common open source blockchain tool/system 
D)  None of the above

Question 9

Some of the various consensus models employed by public blockchain networks include:

Accepted Answer

A)  Proof of Work 
B)  Proof of Importance 
C)  Proof of Stake 
D)  All of the above 
A)  Proof of Work 
B)  Proof of Importance 
C)  Proof of Stake 
D)  All of the above

Question 10

Bitcoin implemented Byzantine Fault Tolerance through a system named:

Accepted Answer

A)  Authenticated Encryption 
B)  Proof of Work 
C)  PBKDF2 
D)  None of the above 
A)  Authenticated Encryption 
B)  Proof of Work 
C)  PBKDF2 
D)  None of the above

Question 11

The Secure Registry Services enables Secured ____________Registry of base Hyperledger images and custom images containing chaincodes. What type of registry is implemented?

Accepted Answer

A)  Docker 
B)  EVM 
C)  Kubenetes 
D)  VMWare 
A)  Docker 
B)  EVM 
C)  Kubenetes 
D)  VMWare

Question 12

Hyperledger can best be described as a ____________________?

Accepted Answer

A)  Blockchain that exclusively supports PoS Consensus 
B)  Permissionless blockchain 
C)  Token 
D)  Blockchain that exclusively supports PoW Consensus 
E)  Umbrella collaboration of open source blockchains 
A)  Blockchain that exclusively supports PoS Consensus 
B)  Permissionless blockchain 
C)  Token 
D)  Blockchain that exclusively supports PoW Consensus 
E)  Umbrella collaboration of open source blockchains

Question 13

When a consensus algo is considered to be "pluggable modularity», what does that mean?

Accepted Answer

A)  Add permission as needed 
B)  Add user as needed 
C)  Select an optimal algorithm for your networks 
D)  Select a specific API that manages the blockchain 
A)  Add permission as needed 
B)  Add user as needed 
C)  Select an optimal algorithm for your networks 
D)  Select a specific API that manages the blockchain

Question 14

Records on a public blockchain are deleted by?

Accepted Answer

A)  They cannot be deleted 
B)  Filing a request with the Ethereum Foundation 
C)  Recalling the transaction of Etherscan.io 
D)  Deleting the transaction from the app that sent it 
A)  They cannot be deleted 
B)  Filing a request with the Ethereum Foundation 
C)  Recalling the transaction of Etherscan.io 
D)  Deleting the transaction from the app that sent it

Question 15

With Hyperledger Fabric ledger, it supports both levelDB / CouchDB for state data?

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A)  .acl 
B)  Reputation Manager 
C)  Distributed Ledger 
D)  .bna 
A)  .acl 
B)  Reputation Manager 
C)  Distributed Ledger 
D)  .bna

Question 17

Which is the right order for Ethereum Denominations?

Accepted Answer

A)  Finney, Szabo, Mether, Wei 
B)  Gwei, Szabo, Finney, Ether 
C)  Finney, Szabo, Mether, Gwei 
D)  Wei, Finney, Szabo, Ether, Tether 
A)  Finney, Szabo, Mether, Wei 
B)  Gwei, Szabo, Finney, Ether 
C)  Finney, Szabo, Mether, Gwei 
D)  Wei, Finney, Szabo, Ether, Tether

Question 18

Hyperledger Composer has following two main components?

Accepted Answer

A)  Composer Playground 
B)  Business Network Archive 
A)  Composer Playground 
B)  Business Network Archive

Question 19

Ethereum tries to keep the mining time difference between ____ and _____seconds.

Accepted Answer

A)  10, 18 
B)  10, 20 
C)  10, 29 
D)  10, 19 
A)  10, 18 
B)  10, 20 
C)  10, 29 
D)  10, 19

Question 20

By default, who can see transaction details on a public/open blockchain?

Accepted Answer

A)  The initiator 
B)  Everyone 
C)  The recipient of a transaction 
D)  The network owner / administrator 
A)  The initiator 
B)  Everyone 
C)  The recipient of a transaction 
D)  The network owner / administrator

You are trying to generate a random number in Ethereum blockchain. What is the best way?

When you are developing with Fabric Composer which of the following is true?

Ownership or partial ownership of an asset can be tracked with which type of token?

A Blockchain network can be best categorized as:

One critical business consideration you must account for when choosing Hyperledger Fabric over Ethereum is:

To approve pending ledger transactions, consensus algorithms often implement:

What are some advantages of Proof of Stake(POS) mining over Proof of Work(POW) mining? (Select three.)

If a company desires to create a unique cryptocurrency and launch a new blockchain network to host it.

Some of the various consensus models employed by public blockchain networks include:

Bitcoin implemented Byzantine Fault Tolerance through a system named:

The Secure Registry Services enables Secured ____________Registry of base Hyperledger images and custom images containing chaincodes. What type of registry is implemented?

Hyperledger can best be described as a ____________________?

When a consensus algo is considered to be "pluggable modularity», what does that mean?

Records on a public blockchain are deleted by?

With Hyperledger Fabric ledger, it supports both levelDB / CouchDB for state data?

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

Which is the right order for Ethereum Denominations?

Hyperledger Composer has following two main components?

Ethereum tries to keep the mining time difference between and _seconds.

By default, who can see transaction details on a public/open blockchain?

Certified Blockchain Business Foundations

BTA Certified Blockchain Developer - Ethereum

BTA Certified Blockchain Developer - Hyperledger

Filters

Exam 4: BTA Certified Blockchain Solution Architect

You are trying to generate a random number in Ethereum blockchain. What is the best way?

When you are developing with Fabric Composer which of the following is true?

Ownership or partial ownership of an asset can be tracked with which type of token?

A Blockchain network can be best categorized as:

One critical business consideration you must account for when choosing Hyperledger Fabric over Ethereum is:

To approve pending ledger transactions, consensus algorithms often implement:

What are some advantages of Proof of Stake(POS) mining over Proof of Work(POW) mining? (Select three.)

If a company desires to create a unique cryptocurrency and launch a new blockchain network to host it.

Some of the various consensus models employed by public blockchain networks include:

Bitcoin implemented Byzantine Fault Tolerance through a system named:

The Secure Registry Services enables Secured ____________Registry of base Hyperledger images and custom images containing chaincodes. What type of registry is implemented?

Hyperledger can best be described as a ____________________?

When a consensus algo is considered to be "pluggable modularity», what does that mean?

Records on a public blockchain are deleted by?

With Hyperledger Fabric ledger, it supports both levelDB / CouchDB for state data?

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

Which is the right order for Ethereum Denominations?

Hyperledger Composer has following two main components?

Ethereum tries to keep the mining time difference between ____ and _____seconds.

By default, who can see transaction details on a public/open blockchain?

Certified Blockchain Business Foundations

BTA Certified Blockchain Developer - Ethereum

BTA Certified Blockchain Developer - Hyperledger

Filters

Ethereum tries to keep the mining time difference between and _seconds.