CBDH BTA Certified Blockchain Developer

Exam Guide Details (Click below to expand)
The BTA Certified Blockchain Developer Hyperledger (CBDH) exam is an elite way to demonstrate your knowledge and skills in this emerging space. This exam study guide covers exam objectives, including to write, test, and deploy secure chain code. It will include topics on how to plan and prepare applications for the Hyperledger Blockchain. The guide provides exam objectives on how to use Hyperledger Composer.

Exam guide includes:
100+ practice questions
Key term glossary

This guide is geared to prepare you for the Certified Blockchain Developer Hyperledger (CBDH) exam. The exam is delivered globally at Pearson VUE locations. The CBDE exam is a 70 question multiple-choice exam that lasts 1.5 hours and is a performance-based evaluation of your Hyperledger Fabric and Composer skills and knowledge.

Question: 1
Level DB is the default database for Hyperledger Fabric and is particularly appropriate when ledger states comprise what type of data?

A. Complex key-value pairs
B. Rich Queries
C. JSON data pairs
D. Simple key-value pairs

Answer: 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.

Question: 2
When creating a network according to an organization’s structure and also bootstrap a channel what
are the following artifacts we would need to generate?

A. Genesis Block, License File and Anchor Peer Configs for each organization.
B. Genesis Block, ledger Configuration and Anchor Peer Configs for each organization.
C. Genesis Block, Channel Configuration and Anchor Peer Configs for each organization.
D. Genesis Block, Channel Configuration and Anchor MSP Configs for each organization.

Answer: C

Explanation:
To create a network according to an organization’s structure, and to bootstrap a channel, we will
need to generate the following artifacts: A genesis block, containing organization-specific certificates
that serve to initialize the Fabric blockchain. Channel configuration information. Anchor peer
configurations for each organization. An anchor peer serves as a fulcrum within an organization, for
cross-organization ledger syncing using the Fabric gossip protocol.

Question: 3
Which Hyperledger tool would you select to invoke, deploy or query blocks, transactions and
associated data, network information (name, status, list of nodes), chain codes and transaction
families, as well as other relevant information stored in the ledger?

A. Hyperledger Quilt
B. Hyperledger Cello
C. Hyperledger Caliper
D. Hyperledger Explorer

Answer: D

Explanation:
Hyperledger explorer: Hyperledger explorer, which was originally contributed by IBM, Intel, and
DTCC, can view, invoke, deploy or query blocks, transactions and associated data, network
information (name, status, list of nodes), chain codes and transaction families, as well as other
relevant information stored in the ledger.

Question: 4
Blockchain services consists of three major components.
What are they? (Select three.)

A. Consensus Manager
B. Distributed Ledger
C. Peer to Peer Protocol
D. Reputation Manager
E. Membership Services

Answer: A,B,C

Explanation:
1. P2P Protocol is implemented over HTTP/2 standards and uses Google RPC.. P2P components
defines messages used by peer nodes, from point to point to multicast. 2. Distributed Ledger
manages the world state and the transaction log in the blockchain. 3. Consensus Manager defines
the interface between the consensus algorithm and the other Hyperledger components.