C1000-068 : Foundations of IBM Blockchain Platform V2 Exam

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IBM
C1000-068
Foundations of IBM Blockchain Platform V2
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Question: 1
Which type of network participant is responsible for endorsing transactions in the IBM Blockchain Platform?
1. Peers
2. Orderers
dministrators wer: A
anation: Peers are the type of network participant responsible for endo actions in the IBM Blockchain Platform. Peers maintain a copy of the kchain ledger and execute chaincode to validate and endorse transacti
When a transaction is submitted to the network, it is first sent to the endor which execute the associated chaincode, verify its validity, and prod ndorsement signature. The endorsements are collected and used during ensus process to determine the final validity and ordering of transactio
stion: 2
ch programming language is commonly used for developing smart acts on the IBM Blockchain Platform?
ava
Certificate Authorities (CAs)
3. A
Ans
Expl rsing
trans
bloc ons.
sing
peers, uce
an e the
cons ns.
Que
Whi contr
1. J
2. Python
3. Solidity
4. JavaScript Answer: C
Explanation: Solidity is the programming language commonly used for
developing smart contracts on the IBM Blockchain Platform. Solidity is a statically typed, contract-oriented language specifically designed for writing smart contracts on the Ethereum platform. It provides a syntax similar to JavaScript and has extensive support for contract-oriented programming concepts. With Solidity, developers can define the behavior and logic of their smart contracts, enabling the execution of complex business logic on the blockchain.
stion: 3
is the purpose of the IBM Blockchain Platform Console? provides a user-friendly interface for creating smart contracts.
allows users to monitor the performance and health of the blockchain ork.
enables the integration of external data sources with the blockchain ork.
facilitates the exchange of digital assets between different blockchain orks.
wer: B
anation: The purpose of the IBM Blockchain Platform Console is to a to monitor the performance and health of the blockchain network. T ole provides a user-friendly interface that displays real-time informati the network's nodes, channels, smart contracts, and transaction activ
Que
What
1. It
2. It
netw
3. It
netw
4. It
netw Ans
Expl llow
users he
cons on
about ity. It
allows users to track metrics, view logs, analyze network performance, and troubleshoot issues. The console plays a vital role in managing and maintaining the overall health and efficiency of the blockchain network.
Question: 4
Which component of the IBM Blockchain Platform is responsible for ordering and packaging transactions into blocks?
1. Peer nodes
2. Orderer nodes
3. Certificate Authority (CA)
wer: B
anation: The component of the IBM Blockchain Platform that is onsible for ordering and packaging transactions into blocks is the Ord
s. Orderer nodes play a crucial role in the consensus mechanism of th kchain network. They receive transaction proposals from client cations, order them based on predefined rules, package them into bloc istribute the blocks to the peer nodes for validation and commitment edger. The orderer nodes ensure the chronological order and consisten actions within the blockchain network.
stion: 5
context of Hyperledger Fabric, what is the role of an ordering servic validate and endorse transactions before they are added to the
kchain.
manage the membership and access control within the blockchain
Client applications Ans
Expl
resp erer
node e
bloc
appli ks,
and d to
the l cy of
trans
Que
In the e?
1. To
bloc
2. To
network.
3. To maintain the shared ledger and order transactions into blocks.
4. To execute the chaincode and enforce the smart contract logic. Answer: C
Explanation: The role of an ordering service in Hyperledger Fabric is to
maintain the shared ledger and order transactions into blocks. The ordering service is responsible for collecting transactions from the network's peers, sequencing them in a specific order, and packaging them into blocks. These blocks are then distributed to the peers for validation and commitment to the blockchain. By providing a consistent ordering of transactions, the ordering service ensures that all peers have an identical view of the blockchain history, enabling consensus and consistency in the network.
stion: 6
ch type of consensus algorithm is used by Hyperledger Fabric to valid actions?
roof of Work (PoW) roof of Stake (PoS)
ractical Byzantine Fault Tolerance (PBFT) elegated Proof of Stake (DPoS)
wer: C
anation: Hyperledger Fabric uses the Practical Byzantine Fault Tolera FT) consensus algorithm to validate transactions. PBFT is a consensus ithm designed to tolerate Byzantine faults, which include arbitrary fai alicious behavior by network participants. PBFT ensures that transacti greed upon by a certain number of validating peers before they are idered valid and added to the blockchain. This consensus mechanism
Que
Whi ate
trans
1. P
2. P
3. P
4. D
Ans
Expl nce
(PB
algor lures
or m ons
are a cons
provides a high level of fault tolerance and enables efficient transaction processing in the Hyperledger Fabric network.
Question: 7
In the context of the IBM Blockchain Platform network, what is the process to increase the CPU for a deployed peer?
1. The CPU allocation for the peer will increase automatically as required.
2. The CPU allocation for the peer cannot be changed once the peer has been created.
3. Change the resource allocation for the peer using the IBM Blockchain Platform web console.
wer: C
anation: To increase the CPU for a peer deployed in an IBM Blockch orm network, you need to change the resource allocation for the peer BM Blockchain Platform web console. This console provides a user- dly interface to manage and configure various aspects of the blockcha ork, including the resource allocation for individual peers. By adjusti urce allocation settings through the web console, you can allocate mor resources to the peer as per your requirements.
stion: 8
ch component of the IBM Blockchain Platform is responsible for man embership and access control within a network?
rdering service
Change the resource allocation for the peer using a Hyperledger Fabric peer command.
Ans
Expl ain
Platf using
the I
frien in
netw ng the
reso e
CPU
Que
Whi aging
the m
1. O
2. Certificate Authority (CA)
3. Peer node
4. Chaincode Answer: B
Explanation: The Certificate Authority (CA) is responsible for managing the
membership and access control within a network in the IBM Blockchain Platform. The CA is a component that issues and manages digital certificates for network participants, ensuring secure authentication and authorization. It verifies the identity of users and controls their access to various network resources. By managing the membership and access control, the CA plays a crucial role in maintaining the integrity and security of the blockchain network.
ch programming language is commonly used to write chaincode in the Blockchain Platform?
avaScript ython
o ava
wer: C
anation: The programming language commonly used to write chainco BM Blockchain Platform is Go. Go, also known as Golang, is a static d, compiled language developed by Google. It is well-suited for writin ncode due to its simplicity, performance, and built-in support for urrency. Chaincode, also referred to as smart contracts, are typically en in Go to define the transactional logic and rules of the network.
Question: 9
Whi IBM
1. J
2. P
3. G
4. J
Ans
Expl de in
the I ally
type g
chai conc writt
Question: 10
What is the purpose of the Fabric Gateways view in the IBM Blockchain Platform VS Code extension?
1. creating a blockchain network
2. discovering a blockchain network
3. connecting to a blockchain network
4. joining an organization to a blockchain network Answer: C
iding the necessary configuration details, such as network URL, user entials, and channel information. Once connected, users can interact w etwork, submit transactions, query the ledger, and perform other netw ed operations.
stion: 11
is the purpose of the Hyperledger Fabric Certificate Authority (CA) BM Blockchain Platform?
establishes the connection between multiple blockchain networks. provides a distributed ledger for storing transaction data.
manages the identities and issues digital certificates. ensures the security of the blockchain network.
wer: C
Explanation: The purpose of the Fabric Gateways view in the IBM Blockchain Platform VS Code extension is to connect to a blockchain network. This view allows users to establish connections to existing blockchain networks by
prov
cred ith
the n ork-
relat
Que
What in
the I
1. It
2. It
3. It
4. It
Ans
Explanation: The Hyperledger Fabric Certificate Authority (CA) in the IBM Blockchain Platform is responsible for managing the identities and issuing digital certificates. The CA acts as a trusted authority within the network, verifying the identity of participants and generating cryptographic certificates that are used for secure communication and transaction signing. It ensures the authenticity and integrity of network participants and establishes a foundation of trust within the blockchain network.
Question: 12
Which cryptographic algorithm is commonly used for securing transactions in the IBM Blockchain Platform?
1. RSA
HA-256 MAC
wer: C
anation: The cryptographic algorithm commonly used for securing actions in the IBM Blockchain Platform is SHA-256 (Secure Hash rithm 256-bit). SHA-256 is a widely used cryptographic hash functio rates a fixed-size hash value (256 bits) from input data. In the context kchain, SHA-256 is used to create a unique digital fingerprint, or hash transaction. This hash is then used for verification, integrity checking ng transactions together in the blockchain's Merkle tree structure.
stion: 13
is the purpose of an endorsement policy in the context of Hyperledg ic?
AES
2. S
3. H
Ans Expl
trans
Algo n that
gene of
bloc , of
each , and
linki
Que
What er
Fabr
1. To determine the fee structure for transactions on the blockchain network.
2. To ensure the availability and reliability of the blockchain network.
3. To specify the required number of peer endorsements for a transaction's validity.
4. To define the cryptographic algorithms used for securing transactions. Answer: C
rity and reliability of the blockchain network.
stion: 14
is the role of a smart contract in the IBM Blockchain Platform? defines the network topology.
manages the identity and access control. stores and manages the blockchain ledger.
enforces the business logic and rules of the network. wer: D
anation: A smart contract in the IBM Blockchain Platform is responsi nforcing the business logic and rules of the network. It is a self-execut act that contains the terms and conditions agreed upon by the particip es. The smart contract defines the actions, conditions, and outcomes t utomatically executed when certain predefined conditions are met. It
Explanation: The purpose of an endorsement policy in the context of Hyperledger Fabric is to specify the required number of peer endorsements for a transaction's validity. Endorsement policies define the criteria that a transaction must meet to be considered valid by the network. Typically, an endorsement policy requires a certain number or percentage of participating peers to endorse a transaction before it can be committed to the blockchain. This mechanism ensures consensus among multiple peers and enhances the secu
Que
What
1. It
2. It
3. It
4. It
Ans
Expl ble
for e ing
contr ating
parti hat
are a
enables automated and trusted execution of transactions and ensures the integrity and transparency of the network's operations.

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