Blockchain CBDH Exam Practice Test Instant Access

Question 1

The CA (Certificate Authority) in Hyperledger Fabric issues the certificates. These certificates are used for identity validation and for transmission of encrypted data that only the owner (person, organization or software) of a specific certificate is able to decrypt and read.

What types of certificates are issued by the CA?

Atcert

Becert

Crootcert

Answer : A, B, C

Rootcert, tcert and ecert. As The CA (Fabric CA by default) issues a root certificate (rootCert) to each member (organization or individual) that is authorized to join the network. The CA also issues an enrollment certificate (eCert) to each member component, server-side applications and occasionally end users. Each enrolled user is granted an allocation of transaction certificates (tCerts). Each tCert authorizes one network transaction.

Question 2

What is the best definition of chaincode with Hyperledger?

AChaincode is a decentralized transactional program, running one the validating nodes.

BChaincode is centralized transactional program, running on the validating nodes.

CChaincode is centralized transactional program, running on the peer nodes.

DChaincode is a decentralized transactional program, running on the peer nodes.

Answer : A

Question 3

There are currently three supported ordering services in Hyperledger Fabric and one service is used by developers experimenting with Hyperledger Fabric networks.

What service is this?

APoET

BKafks

CSOLO

DSBFT

EBFT

Answer : C

SOLO is the Hyperledger Fabric ordering mechanism most typically used by developers experimenting with Hyperledger Fabric networks. SOLO involves a single ordering node and Note Development Only.

Question 4

What Hyperledger tool is a blockchain benchmark tool that allows users to measure performance of a specific implementation with predefined use cases?

ACello

BExplorer

CCaliper

DComposer

EQuilt

Answer : C

Hyperledger Caliper: A blockchain benchmark tool that allows users to measure performance of a specific implementation with predefined use cases Its in Alpha mode at time of writing. Contributed by developers from numerous organizations.

References:

Question 5

Hyperledger Composer has the following two main components.

AComposer Framework and a Business Network Archive

BComposer Playground and a Business Network Configuration

CComposer Playground and a Business Network Archive

DDistributed Ledger and a Business Network Archive

EDistributed Ledger and Composer playground

Answer : C

There are two parts: 1. Business Network Archive which essentially captures the core data in a business network, including the business model, transaction logic, and access controls, the Business Network Archive packages these elements up and deploys them to a runtime. Business Network Archive files are stored as ''.bna'' files. AND 2. Composer Playground which is web-based tool allows developers to learn Hyperledger Composer, model out their business network (domain), test that network, and deploy that network to a live instance of a blockchain network. The playground keeps the development model in browser storage, allowing them to be easily uploaded or downloaded.

Question 6

Ordering service nodes also provide the following services EXCEPT?

AAuthentication of clients

BMaintenance 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.

CChecks the Certificate details and others to validate the transaction.

DFiltering and validation for configuration transactions that reconfigure or create a channel.

Answer : C

References:

Question 7

What is the process of turning cipher-text back into plaintext called?

APacking

BEncryption

CDecryption

DHashing

Answer : C

Blockchain CBDH BTA Certified Blockchain Developer - Hyperledger Exam Practice Test