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Top Tips for Passing the Blockchain CBDH Exam on Your First Try

Questions 1

Exhibit.

CBDH Question 1

Based on the chaincode displayed, which function returns the value of the specified asset key?

Options:

A.

main

B.

Init

C.

Invoke

D.

get

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Questions 2

A resource marked as abstract_____be instantiated; can be_____to create new resource definitions.

Options:

A.

cannot, accessed

B.

can, extended

C.

cannot, extended

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Questions 3

What type of peer endorses and executes a transaction?

Options:

A.

Endorsement Peer

B.

Peered Peer

C.

Executing Peer

D.

Endorsing Peer

E.

Peer Node

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Questions 4

Exhibit.

CBDH Question 4

Based on the code snippet displayed, what does the following line do

return assetRegistry.update(transfer.stock) ;

Options:

A.

Updates the world state database

B.

Persists the state of the asset to the blockchain ledger

C.

Updates the assetRegistry variable

D.

Returns the assetRegistry to the transfer, stock

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Questions 5

You’re currently investigating Hyperledger and would like to confirm that there is a set of collaboration tools for building blockchain business networks that accelerate the development of smart contracts and blockchain applications.

What is the solution that meets the requirement?

Options:

A.

Hyperledger Explorer

B.

Hyperledger Composer

C.

Hyperledger Quilt

D.

Hyperledger Cello

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Questions 6

Query is called whenever you query your chaincode's state.   Queries do not result in blocks being added to the chain, and you cannot use certain functions.

Which function can you not use inside a Query? 

Options:

A.

Error

B.

Getstate

C.

Putstate

D.

Read

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Questions 7

Exhibit.

CBDH Question 7

The function displayed is called

Options:

A.

On the instantiation of the chaincode

B.

On the 3rd call to the chaincode

C.

On every invocation of the chaincode

D.

On the teardown of the chaincode

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Questions 8

Exhibit.

CBDH Question 8

The lowercase "o" in the code snippet indicates:

Options:

A.

An attribute of the asset

B.

A relationship to the asset

C.

Both A and B

D.

Neither A nor B

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Questions 9

What function in chaincode will be used to store a state on the blockchain ledger?

Options:

A.

ChaincodeStubInterface.getFunctionAndParameters

B.

ChaincodelLedgerInterface.PlaceState

C.

ChaincodeStubInterface.PlaceState

D.

ChaincodeStubInterface.PutState

E.

ChaincodeLedgerInterfaceStoreState

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Questions 10

All of the modeling components MUST be defined in a single file.

Options:

A.

TRUE

B.

FALSE

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