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

A.
Validation
A.
Validation
Answers
B.
Scheduling
B.
Scheduling
Answers
C.
Ordering
C.
Ordering
Answers
D.
Endorsement
D.
Endorsement
Answers
E.
Processing
E.
Processing
Answers
F.
Batching
F.
Batching
Answers
Suggested answer: A, C, D

The Hyperledger Project has a modular umbrella schema to its organization which includes three parts of the organizational schema. As part of the organizational schema, it includes an “Infrastructure” Module that is structured with four layers.

What layer below is NOT part of the structure?

A.
Architecture
A.
Architecture
Answers
B.
Organizational
B.
Organizational
Answers
C.
Legal
C.
Legal
Answers
D.
Technical
D.
Technical
Answers
Suggested answer: A

Explanation:

The Infrastructure Module includes the following four modules: Technical, Legal, Marketing, and Organizational.

When the distributed ledger has been updated and all nodes maintain their own identical copy of the ledger, what were the nodes reached?

A.
Perfection
A.
Perfection
Answers
B.
Consensus
B.
Consensus
Answers
C.
Replication
C.
Replication
Answers
D.
Agreement
D.
Agreement
Answers
Suggested answer: B

Explanation:

Consensus is when the distributed ledger has been updated and all nodes maintain their own identical copy of the ledger. This is also known as the “World State” in some blockchains. This architecture allows for a new capacity as a system of recordkeeping that goes beyond being a simple database.

________________ endorsement allows the default chaincode-level endorsement policies to be overridden by a different policy for the specified keys.

What type of endorsement is this?

A.
Policy Driven
A.
Policy Driven
Answers
B.
Key-Value
B.
Key-Value
Answers
C.
Stateless
C.
Stateless
Answers
D.
State based
D.
State based
Answers
Suggested answer: D

Explanation:

State Based y default, endorsement policies are specified for a channel’s chaincode at instantiation or upgrade time (that is, one endorsement policy covers all of the state associated with a chaincode). However, there are cases where it may be necessary for a particular state (a particular key-value pair, in other words) to have a different endorsement policy. This state-based endorsement allows the default chaincode-level endorsement policies to be overridden by a different policy for the specified keys.

Reference: https://hyperledger-fabric.readthedocs.io/en/release-1.3/endorsement-policies.html

Ordering service nodes also provide the following services EXCEPT?

A.
Authentication of clients
A.
Authentication of clients
Answers
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.
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.
Answers
C.
Checks the Certificate details and others to validate the transaction.
C.
Checks the Certificate details and others to validate the transaction.
Answers
D.
Filtering and validation for configuration transactions that reconfigure or create a channel.
D.
Filtering and validation for configuration transactions that reconfigure or create a channel.
Answers
Suggested answer: C

Explanation:

Reference: https://hyperledger-fabric.readthedocs.io/en/release-1.3/arch-deep-dive.html

How are "assets" in Hyperledger Fabric represented? (Select two.)

A.
Binary
A.
Binary
Answers
B.
Go
B.
Go
Answers
C.
JSON
C.
JSON
Answers
D.
Node.JS
D.
Node.JS
Answers
E.
Yaml
E.
Yaml
Answers
Suggested answer: A, C

Explanation:

Assets in Hyperledger Fabric are represented in JSON or Binary. Assets are represented in Hyperledger Fabric as a collection of key-value pairs, with state changes recorded as transactions on a Channel ledger. Assets can be represented in binary and/or JSON form. Dont get confused of how Fabric is developed and how assets in chaincode are deployed

Reference: https://hyperledger-fabric.readthedocs.io/en/release-1.3/fabric_model.html

Hyperledger fabric business network is divided into which of the following categories?

A.
Composer, Fabric and Chaincode
A.
Composer, Fabric and Chaincode
Answers
B.
Sawtooth, Fabric and Indy
B.
Sawtooth, Fabric and Indy
Answers
C.
Blockchain, Registration, Identity
C.
Blockchain, Registration, Identity
Answers
D.
Blockchain, Chaincode and Membership
D.
Blockchain, Chaincode and Membership
Answers
Suggested answer: D

Which part of the Hyperledger Project has the marketing responsibility for commercial adoption of the Hyperledger Solutions?

A.
Tools
A.
Tools
Answers
B.
Management
B.
Management
Answers
C.
Infrastructure
C.
Infrastructure
Answers
D.
Framework
D.
Framework
Answers
Suggested answer: C

Please review the chaincode below and select what "import" is specifying.

A.
Menu Choices
A.
Menu Choices
Answers
B.
Installation requirements
B.
Installation requirements
Answers
C.
Dependencies
C.
Dependencies
Answers
D.
Logging requests
D.
Logging requests
Answers
Suggested answer: C

Explanation:

Reference: https://www.ibm.com/developerworks/community/blogs/8d277a63-4204-4fd3-8cb8-b7cb222cd522/entry/Write_deploy_invoke_and_query_Chaincode_on_Blockchain_Hyperlegder_network?lang=en

The fastest way to test your chaincode is to use the REST interface on your peers. There are several REST endpoints you can test and interact with chaincode. (Select two.)

A.
/registrar
A.
/registrar
Answers
B.
/register
B.
/register
Answers
C.
/chaincode
C.
/chaincode
Answers
D.
/blockchain
D.
/blockchain
Answers
E.
/BaaS
E.
/BaaS
Answers
Suggested answer: A, C

Explanation:

/chaincode is the endpoint used for deploying, invoking, and querying chaincode. Which operation you perform is controlled by the body of the request that you send. /registrar allows you to enroll users. Reference:

https://github.com/IBM-Blockchain-Archive/learn-chaincode

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