Question 1

An encryption algorithm transforms plain text into cipher text using a key?

Accepted Answer

A) True 
 B)False

Question 2

Fabric Ledger has two specific parts. Select answer with the proper two parts.

Accepted Answer

A)  State Data, Transactional Data 
B)  State Data, Transaction logs 
C)  LevelIDb, CouchDB 
D)  Transaction Logs, CouchDB 
A)  State Data, Transactional Data 
B)  State Data, Transaction logs 
C)  LevelIDb, CouchDB 
D)  Transaction Logs, CouchDB

Question 3

Ethereum is considered to be a ______________type of blockchain.

Accepted Answer

A)  Permissionless 
B)  Permission Based 
C)  Hybrid 
D)  Private 
A)  Permissionless 
B)  Permission Based 
C)  Hybrid 
D)  Private

Question 4

Contracts live on the blockchain in an Ethereum-specific binary format called _____________?

Accepted Answer

A)  EOS 
B)  EVM Code 
C)  Ether 
D)  Gas 
E)  EVM Bytecode 
A)  EOS 
B)  EVM Code 
C)  Ether 
D)  Gas 
E)  EVM Bytecode

Question 5

You currently using the Metamask Chrome plugin and you see a selection for Etherescan in the plugin. What is Etherscan used for?

Accepted Answer

A)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Ethereum Blockchain 
B)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Bitcoin Blockchain 
C)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Ethereum and Tokens Blockchain 
D)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on any Blockchain 
A)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Ethereum Blockchain 
B)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Bitcoin Blockchain 
C)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on the Ethereum and Tokens Blockchain 
D)  A search engine that allows users to easily lookup, confirm and validate transaction that have taken place on any Blockchain

Question 6

Ethereum currently uses the ___________Consensus Algo and in the future it is planned to go to the __________Consensus Algo?

Accepted Answer

A)  PoW, DPoS 
B)  PoW, PoS 
C)  PoS, PoW 
D)  DPoS, PoW 
A)  PoW, DPoS 
B)  PoW, PoS 
C)  PoS, PoW 
D)  DPoS, PoW

Question 7

In public key cryptography, the public key is used to:

Accepted Answer

A)  Sign/approve any transaction/action that might be made by the holder of the key pair 
B)  Verify the digital signature of a given key pair 
C)  Decrypt the private key so valid transactions/actions can be performed 
D)  Encrypt the private key 
A)  Sign/approve any transaction/action that might be made by the holder of the key pair 
B)  Verify the digital signature of a given key pair 
C)  Decrypt the private key so valid transactions/actions can be performed 
D)  Encrypt the private key

Question 8

Which of following scenarios and datasets would be best suited to be utilized by a blockchain solution?

Accepted Answer

A)  Scenario: Online game, Dataset: Unique Items In Game, Battles Won, Quests Completed 
B)  Scenario: Mobile app for inspirational quotes; Dataset: First Name, Last Name, Quote of the Day 
C)  Scenario: Sales (CRM) website; Dataset: Hot Lead Count, Lead Score, Lead Fullname, Today's Tasks 
D)  All of the above 
A)  Scenario: Online game, Dataset: Unique Items In Game, Battles Won, Quests Completed 
B)  Scenario: Mobile app for inspirational quotes; Dataset: First Name, Last Name, Quote of the Day 
C)  Scenario: Sales (CRM) website; Dataset: Hot Lead Count, Lead Score, Lead Fullname, Today's Tasks 
D)  All of the above

Question 9

Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the ____________________ in particular, Init and Invoke functions. What does is actually implemented?

Accepted Answer

A)  SDK 
B)  REST Interface 
C)  EVM 
D)  Chaincode interface 
A)  SDK 
B)  REST Interface 
C)  EVM 
D)  Chaincode interface

Question 10

What type of peer node executes transactions?

Accepted Answer

A)  Monitoring 
B)  API Peer 
C)  Endorsing Peer 
D)  Ordering Peer 
A)  Monitoring 
B)  API Peer 
C)  Endorsing Peer 
D)  Ordering Peer

Question 11

Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?

Accepted Answer

A)  .Net 
B)  Viper 
C)  LLL 
D)  Solidity 
A)  .Net 
B)  Viper 
C)  LLL 
D)  Solidity

Question 12

Blockchain systems can offer what advantage over centralized systems?

Accepted Answer

A)  They are much easier to maintain and update 
B)  They have significantly higher transaction speeds 
C)  Their distributed ledger systems are more secure and immutable 
D)  All of the above 
A)  They are much easier to maintain and update 
B)  They have significantly higher transaction speeds 
C)  Their distributed ledger systems are more secure and immutable 
D)  All of the above

Question 13

What blockchain is considered Blockchain 1.0, the first blockchain?

Accepted Answer

A)  Bitcoin Cash 
B)  Ethereum 
C)  Litecoin 
D)  Bitcoin 
E)  NEO 
A)  Bitcoin Cash 
B)  Ethereum 
C)  Litecoin 
D)  Bitcoin 
E)  NEO

Question 14

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

Accepted Answer

A)  Gas 
B)  Space 
C)  Storage 
D)  Datastore 
E)  Database 
A)  Gas 
B)  Space 
C)  Storage 
D)  Datastore 
E)  Database

Question 15

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?

Accepted Answer

A)  Stream 
B)  Block 
C)  Parallel 
D)  RSA 
A)  Stream 
B)  Block 
C)  Parallel 
D)  RSA

Question 16

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.

Accepted Answer

A)  public /closed 
B)  private / open 
C)  private / closed 
D)  public / open 
A)  public /closed 
B)  private / open 
C)  private / closed 
D)  public / open

Question 17

What is the nonce-field in a transaction?

Accepted Answer

A)  To sum up all ethers sent from that address 
B)  Protects against replay attacks 
C)  To distribute the workloads in the EVM 
D)  Adds a checksum for transactions 
A)  To sum up all ethers sent from that address 
B)  Protects against replay attacks 
C)  To distribute the workloads in the EVM 
D)  Adds a checksum for transactions

Question 18

In blockchains there is the concept of "Group Consensus" and how many members must agree.

Accepted Answer

A)  52% 
B)  74% 
C)  75% 
D)  51% 
E)  100% 
A)  52% 
B)  74% 
C)  75% 
D)  51% 
E)  100%

Question 19

SHA-1 is the most commonly used SHA algorithm, and produces a ______-byte hash value(size).

Accepted Answer

A)  256 
B)  128 
C)  32 
D)  20 
A)  256 
B)  128 
C)  32 
D)  20

Question 20

Smart Contracts provide all the following benefits EXCEPT?

Accepted Answer

A)  Legally Enforcable 
B)  Autonomy 
C)  Cast Savings 
D)  Efficiency 
E)  Backup 
A)  Legally Enforcable 
B)  Autonomy 
C)  Cast Savings 
D)  Efficiency 
E)  Backup

An encryption algorithm transforms plain text into cipher text using a key?

Fabric Ledger has two specific parts. Select answer with the proper two parts.

Ethereum is considered to be a ______________type of blockchain.

Contracts live on the blockchain in an Ethereum-specific binary format called _____________?

You currently using the Metamask Chrome plugin and you see a selection for Etherescan in the plugin. What is Etherscan used for?

Ethereum currently uses the _Consensus Algo and in the future it is planned to go to the Consensus Algo?

In public key cryptography, the public key is used to:

Which of following scenarios and datasets would be best suited to be utilized by a blockchain solution?

Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the ____________________ in particular, Init and Invoke functions. What does is actually implemented?

What type of peer node executes transactions?

Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?

Blockchain systems can offer what advantage over centralized systems?

What blockchain is considered Blockchain 1.0, the first blockchain?

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

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?

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.

What is the nonce-field in a transaction?

In blockchains there is the concept of "Group Consensus" and how many members must agree.

SHA-1 is the most commonly used SHA algorithm, and produces a ______-byte hash value(size).

Smart Contracts provide all the following benefits EXCEPT?

Certified Blockchain Business Foundations

BTA Certified Blockchain Developer - Ethereum

BTA Certified Blockchain Developer - Hyperledger

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Exam 4: BTA Certified Blockchain Solution Architect

An encryption algorithm transforms plain text into cipher text using a key?

Fabric Ledger has two specific parts. Select answer with the proper two parts.

Ethereum is considered to be a ______________type of blockchain.

Contracts live on the blockchain in an Ethereum-specific binary format called _____________?

You currently using the Metamask Chrome plugin and you see a selection for Etherescan in the plugin. What is Etherscan used for?

Ethereum currently uses the ___________Consensus Algo and in the future it is planned to go to the __________Consensus Algo?

In public key cryptography, the public key is used to:

Which of following scenarios and datasets would be best suited to be utilized by a blockchain solution?

Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the ____________________ in particular, Init and Invoke functions. What does is actually implemented?

What type of peer node executes transactions?

Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?

Blockchain systems can offer what advantage over centralized systems?

What blockchain is considered Blockchain 1.0, the first blockchain?

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

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?

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.

What is the nonce-field in a transaction?

In blockchains there is the concept of "Group Consensus" and how many members must agree.

SHA-1 is the most commonly used SHA algorithm, and produces a ______-byte hash value(size).

Smart Contracts provide all the following benefits EXCEPT?

Certified Blockchain Business Foundations

BTA Certified Blockchain Developer - Ethereum

BTA Certified Blockchain Developer - Hyperledger

Filters

Ethereum currently uses the _Consensus Algo and in the future it is planned to go to the Consensus Algo?

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.