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Blockchain CBDH Exam
BTA Certified Blockchain Developer – Hyperledger (Page 2 )

Updated On: 19-Jan-2026
Page 2 of 40
PDF with 195 Questions

Level DB is the default database for Hyperledger Fabric and is particularly appropriate when ledger states comprise what type of data?

  1. Complex key-value pairs
  2. Rich Queries
  3. JSON data pairs
  4. Simple key-value pairs

Answer(s): D

Explanation:

Simple key-value pairs - LevelDB is the default and is particularly appropriate when ledger states are simple key-value pairs. A LevelDB database is closely co-located with a network node ­ it is embedded within the same operating system process. CouchDB is a particularly appropriate choice when ledger states are structured as JSON documents because CouchDB supports the rich queries and update of richer data types often found in business transactions. Implementation-wise, CouchDB runs in a separate operating system process, but there is still a 1:1 relation between a network node and a CouchDB instance. All of this is invisible to chaincode. https://hyperledger-fabric.readthedocs.io/en/release-1.3/ledger/ledger.html



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

  1. Success
  2. Shim.Error
  3. Shim.Success
  4. Error

Answer(s): B,C



What does REST stand for?

  1. REST (Restructured State Transfer)
  2. REST (Restructured State Transmission)
  3. REST (Representational State Transmission)
  4. REST (Real Time State Transfer)
  5. REST (Representational State Transfer)

Answer(s): E

Explanation:

REST (Representational State Transfer) Server is often used to proxy requests to Hyperledger chaincode. This provides a well-defined process for accessing blockchain services.



Based on the code snippet, the reference --> to Contract indicates:

  1. A pointer to a contract class
  2. A bidirectional resource
  3. Expedited delivery
  4. A unidirectional relationship

Answer(s): A



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

  1. FALSE
  2. TRUE

Answer(s): B



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