What is the best definition of chaincode with Hyperledger?

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

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

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

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

Consensus algorithms are used because _______________

They can include specific rules or conditions to be met

They increase the network security from hacking

They prevent blockchain node failure

When designing a client application it is important to note that queries are defined in a query file (.qry). Where is this .qry file stored?

Parent directory of the business network definition

/tmp directory of the package.json file

Child directory of the package.json file

Child directory of the business network definition

Parent directory of the package.json file

The Membership Services Provider provides identity, privacy, and confidentiality to the network and also by default issues two types of certificates.What are the certificate types? (Select two.)

Does not issue certificates by default

Hyperledger Fabric Composer allows for an easy front end application development experience without having to know the network internal application structure.How is this done in Hyperledger Fabric?

LoopBack connector for business networks exposes a running network as a REST API which can easily be consumed by client applications and integrate non-blockchain applications.

LoopBack connector for business networks exposes a running network as a RPC API which can easily be consumed by client applications and integrate non-blockchain applications.

LoopBack connector for business networks exposes a running network as a SOAP API which can easily be consumed by client applications and integrate non-blockchain applications.

LoopBack connector for business networks exposes a running network as a SOAP or RESTFUL API which can easily be consumed by client applications and integrate non-blockchain applications.

LoopBack connector for business networks exposes a running network as a REST API which can easily be consumed by client applications and integrate non-blockchain applications.

When creating Chaincode for your application what are two tasks you need to perform before running chaincode?

Make sure that a directory is created for your chaincode application as a child

Go programming language installed and correctly configured.

Make sure that a directory is created for your chaincode application as a child

JS programming language installed and correctly configured.

Go programming language installed and correctly configured.

Create a directory on every peer node.

What is a 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?

Hyperledger Composer Playground

The concept of a node is common in most blockchains. Which of the following about nodes is INCORRECT?

Nodes use a type of client server protocol for keeping the distributed ledger in sync across the network

Nodes need a valid certificate to be able to communicate to the network

Nodes connect to other nodes and that is how a blockchain is formed

These three types of nodes. Client, peer and Ordered

Nodes use a type of client server protocol for keeping the distributed ledger in sync across the network

Which of the following statements would be true regarding Hyperledger Composer Playground?

Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are created and logged.

Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are logged but not created.

Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are stored in the database and logged.

Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are created but lot logger.

Composer Playground allows for CRUD (create, read, update, delete) operations to be performed on asset transactions which are created and logged.

In Hyperledger Composer resources are declared which three ways? (Choose three.)

Assets, participants, transactions, end events

Assets, orderers, transactions, and events

Assets, participants, transactions, end events

Which of the following is not a feature of a Hyperledger Fabric ledger?

Read-only queries using a rich query language (if using LevelDB as state database)

Read-only history queries – Query ledger history for a key, enabling data provenance scenarios

Read-only queries using a rich query language (if using CouchDB as state database)

Read-only queries using a rich query language (if using LevelDB as state database)

Query and update ledger using key-based lookups, range queries, and composite key queries.

Composer Modeling Language is an object-oriented modeling language that defines the domain model for a business network definition. Essentially this is saved as a .cto file.Which of the following is NOT a characteristics of a .cto file?

Values may not be assigned to any field variable.

It represents a set of resource definitions that includes assets, transactions, participants, ana events.

Values may not be assigned to any field variable.

The modeling language does not support multiple inheritance.

It is a single namespace in which all resource declarations are implicitly defined.

When using Hyperledger Composer modeling language structure words “asset” and “participant” are reserved.

In Hyperledger Fabric channels are used to ensure privacy and confidentiality. Which of the following is not correct about channels?

Channels partition the network in order to allow transaction visibility for specific stakeholders only

Peers are connected to the channel and can receive all the transactions that are broadcasted on that channel B. Each channel maintains their own chaincode and ledger

Consensus takes place within a channel by members of the channel and other channels.

Channels partition the network in order to allow transaction visibility for specific stakeholders only

Blockchain CBDH Practice Test 3 - Free Online Exam Prep & Questions

Spam

Selling illegal goods, money scams etc.

Hate Speech

Serious attack on a group.

Harassment and bullying

Harassing an individual (including doxing)

Harmful activities

Threatening or glorifying violence or serious harm, including self-harm

Adult content (Consensual)

Nudity/Sexual content

Sexual exploitation and abuse (child safety)

Sexually explicit or suggestive imagery or writing involving minors

Sexual exploitation and abuse (adults and animals)

Sexually explicit or suggestive imagery or writing involving non-consenting adults or non-humans

Plagiarism

Reusing content without attribution (link and blockquotes)

Poorly written

Not in English or has very bad formatting, grammar, and spelling

Inappropriate credential

Author's credential is offensive, spam, or impersonation

Other

Ex. Illegal content, incomplete question...

Blockchain CBDH Practice Test 3

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