CBDH Exam Training Practice Tests (Blockchain BTA Certified Blockchain Developer

Question 1

In Hyperledger Fabric, miners are called?

A. Channels B. Endorser Node C. There are no miners in Hyperledger D. Committer Peer

Correct Answer: A

Question 2

Orderers are responsible for all of the following except one:

A. Orders the transaction B. Maintain consistency of transactions across network C. Persistence of transactions D. Consensus

Correct Answer: D

Question 3

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

A. Decryption B. Encryption C. Packing D. Hashing

Correct Answer: A

Question 4

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?

A. ecert B. tcert C. rootcert

Correct Answer: A,B,C

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Question 5

Chaincode Services uses___________________ to host (deploy) the chaincode.
What does Chaincode services in Hyperledger use?

A. Docker B. Virtual Machines C. Kubernetes D. Yaml E. Deployment Manager

Correct Answer: A

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Question 6

Hyperledger Fabric allows multiple certification authorities to be setup for a business network application.
E.g., it there are 3 members using the network application, all 3 members can issue certificates to their employees so they can initiate transactions on the network application.

A. FALSE B. TRUE

Correct Answer: A

Question 7

Reviewing the code below what are the two possible outcomes of the functions? (Select two.)

A. Error B. Shim.Success C. Shim.Error D. Success

Correct Answer: B,C

Question 8

Which of the following provides Immutability?

A. Network configuration cannot be changed B. Guarantee that participants will never put bad information on the Blockchain C. Network nodes will never fail D. Assurance that a transaction cannot be altered

Correct Answer: A

Question 9

All but one can be used as Orderer implementation:

A. KKafka B. Active MQ C. Solo

Correct Answer: B

Question 10

All of the following are key terms in Cryptography EXCEPT?

A. Cipher B. Code C. Root Hash D. Secret E. Function

Correct Answer: C

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Question 11

In Hyperledger Fabric, there are three types of peer nodes depending upon the assigned roles.
What are three types? (Choose three.)

A. Client peer B. Peer C. Endorsing Peer D. MSP Peer E. Ordering Peer F. Committing Peer G. Channel Peer

Correct Answer: B,C,E

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Question 12

What does REST stand for?

A. REST (Representational State Transfer) B. REST (Real Time State Transfer) C. REST (Restructured State Transfer) D. REST (Representational State Transmission) E. REST (Restructured State Transmission)

Correct Answer: A

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Question 13

Members of the Hyperledger Fabric DLT network may be allowed to issue certificates to their employees and for their infrastructure

A. FALSE B. TRUE

Correct Answer: B

Question 14

Hyperledger Fabric Ledger has two parts. What are they?

A. Stateful Data and Membership Logs B. State Data and Membership Logs C. State data and Snapshots D. State Data and Transaction Logs E. Stateless Data and Snapshots

Correct Answer: D

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Blockchain BTA Certified Blockchain Developer - Hyperledger - CBDH Exam Practice Test