Question 1

An_____________ is defined as a communication node that is responsible for the distribution of blockchain transactions in Hyperledger Fabric.

Accepted Answer

A)  MSP 
B)  Peer Node 
C)  Client Node 
D)  Endorsing Node 
E)  Orderer

Question 2

Smart contracts are created by computer programmers through the help of smart contract development tools and are entirely digital. These programs are usually written using programming code languages. Which of the following languages would not be ideal for use in smart contracts?

Accepted Answer

A)  Python 
B)  Assembler 
C)  C++ 
D)  Go 
E)  Java

Question 3

Did you know that Blockchain Training Alliance offers a discount for Udemy students to save $90.00 on any BTA Exam?  .

Accepted Answer

A)  NO, that's ok Use Code JH30UDEMY 
B)  YES, Use Code JH30UDEMY

Question 4

When creating a network according to an organization's structure and also bootstrap a channel what are the following artifacts we would need to generate?

Accepted Answer

A)  Genesis Block, License File and Anchor Peer Configs for each organization. 
B)  Genesis Block, ledger Configuration and Anchor Peer Configs for each organization. 
C)  Genesis Block, Channel Configuration and Anchor Peer Configs for each organization. 
D)  Genesis Block, Channel Configuration and Anchor MSP Configs for each organization.

Question 5

What is the initial setup of a network which policies, system chaincodes, and cryptographic materials (certs) are disseminated amongst participants are defined to establish trust?

Accepted Answer

A)  Chaining 
B)  Instantiaton 
C)  Bootstrapping 
D)  Subnetting

Question 6

Ordering service nodes also provide the following services EXCEPT?

Accepted Answer

A)  Authentication of clients 
B)  Maintenance of a system chain that defines ordering service configurations, root certs and MSP IDs for authenticated organizations and a grouping of profiles containing the various consortia within the network. 
C)  Checks the Certificate details and others to validate the transaction. 
D)  Filtering and validation for configuration transactions that reconfigure or create a channel.

Question 7

The security module works in conjunction with the ________________________ module to provide access control service to any data recorded and business logic deployed on a chain network.

Accepted Answer

A)  HSM 
B)  Membership Services 
C)  Chaincode 
D)  Consensus

Question 8

Blockchain solutions are comprised of four building blocks. Which of the following answers list the building blocks?

Accepted Answer

A)  Shared ledger, Privacy, Trust, and Smart Contracts or (Chaincode) 
B)  Shared ledger, Centralization, Trustless, and Smart Contracts or (Chaincode) 
C)  Shared ledger, Privacy, Trustless, and Smart Contracts or (Chaincode) 
D)  Shared ledger, Centralization, Trust, and Smart Contacts or (Chaincode)

Question 9

What type of peer executes chaincode?

Accepted Answer

A)  Anchor peer 
B)  Endorsing Peer 
C)  Chaincode is executed by the client 
D)  Ordered Peer 
E)  Chaincode is not executed by a peer.

Question 10

There are currently three supported ordering services in Hyperledger Fabric. (Select three.)

Accepted Answer

A)  BFT 
B)  PoET 
C)  SBFT 
D)  Kafka 
E)  SOLO

Question 11

You are writing chaincode and you need to access the ledger's state. What two functions of the chaincode shim API do you select? (Select two.)

Accepted Answer

A)  GetState 
B)  PutState 
C)  InvokeChaincode 
D)  GetStringArgs

Question 12

Chaincode with Hyperledger Fabric can be written in what development languages? Select All that apply.

Accepted Answer

A)  Node.js 
B)  Go 
C)  Java

Question 13

What Hyperledger sponsored tool is a new open-source application development framework, which simplifies the creation of Hyperledger Fabric blockchain applications, thus reducing the time and complexity of development. The tool aims at helping users to create blockchain applications based on Hyperledger Fabric without needing to know the low-level (Go Programming) details involved in blockchain networks?

Accepted Answer

A)  Hyperledger Quilt 
B)  Hyperledger Composer 
C)  Hyperledger Explorer 
D)  Hyperledger Cello

Question 14

There are two popular approaches to defining assets in most blockchain solutions. (Select two.)

Accepted Answer

A)  Stateless UTXO model, where account balances are encoded into past transaction records. 
B)  Account model, where account balances are kept in state storage space in memory registers. 
C)  Stateful UTXO model, where account balances are encoded into past transaction records. 
D)  Account model, where account balances are kept in stateless storage space on the ledger. 
E)  Stateless UTXO model, where account balances are encoded into current transaction records.
F) Account model, where account balances are kept in state storage space on the ledger.

Question 15

What is the best definition of chaincode with Hyperledger?

Accepted Answer

A)  Chaincode is a decentralized transactional program, running one the validating nodes. 
B)  Chaincode is centralized transactional program, running on the validating nodes. 
C)  Chaincode is centralized transactional program, running on the peer nodes. 
D)  Chaincode is a decentralized transactional program, running on the peer nodes.

Question 16

Hyperledger blockchain frameworks reach consensus by performing two separate activities. What are the two activities? (Select two.)

Accepted Answer

A)  Updating Transactions 
B)  Validating Transactions 
C)  Ordering Transactions 
D)  Writing Transactions 
E)  Packing Transactions

Question 17

Which of the following syntaxes will compile the chaincode?

Accepted Answer

A)  go int 
B)  go build 
C)  go create 
D)  go compile

Question 18

Hyperledger Fabric Consensus is planned out into 3 phases. (Select three.)

Accepted Answer

A)  Validation 
B)  Scheduling 
C)  Ordering 
D)  Endorsement 
E)  Processing
F) Batching

Question 19

By default, the discovery business network card is also used to handle all requests to the ___________

Accepted Answer

A)  REST API 
B)  Chaincode 
C)  SDK 
D)  Cloud Endpoint

Question 20

REST (Representational State Transfer) Server is often used to proxy requests to Hyperledger chaincode. What value does using REST APIS provide?

Accepted Answer

A)  Provides a well-defined process for accessing blockchain services. 
B)  Provides a well-defined middleware for connecting to off chain services such as Bitcoin. 
C)  Provides a well-defined middleware for connecting to blockchain services. 
D)  Provides a well-defined process for accessing web services.

Exam 3: BTA Certified Blockchain Developer - Hyperledger