CBDH BTA Certified Blockchain Developer – Hyperledger
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.
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