R3 Corda
Smart Contracts in R3 Corda are written using programming languages like ______ and _____.
A. Go , C++
B. Java, Python
C. Solidity, Vyper
D. Java, Kotlin
Ans : Java, Kotlin
When new states are created, old states are not deleted, but marked as __
Ans:-Historic
R3 Corda and Bitcoin use which computational model.
A. Unspent Transaction Output (UTXO)
B. Internal Execution
C. Virtual Computing
D. Modular
Ans : Unspent Transaction Output (UTXO)
In R3 Corda, _______ is used as a consensus mechanism.
A. Database Administrator
B. Verification Service
C. Notary service
D. Consensus Service
Ans : Consensus Service
__________ is a distributed ledger technology where data is stored in the form of blocks.
_______ include data shared between two more or more nodes in a network.
A. Data
B. Messages
C. Shared fact
D. Contracts
Ans : Contracts
Which of the following is a similarity between bitcoin and R3 Corda?
A. Both have cryptocurrency
B. Both are public blockchain platforms
C. Both have immutable states
D. Both support Turing complete programs
Ans : Both are public blockchain platforms
Q.2 In R3 Corda, _______ is used as a consensus mechanism.
A. Database Administrator
B. Verification Service
C. Notary service
D. Consensus Service
Ans : Consensus Service
Q.3 Smart Contracts in R3 Corda are written using programming languages like ______ and _____.
A. Go , C++
B. Java, Python
C. Solidity, Vyper
D. Java, Kotlin
Ans : Java, Kotlin
Q.4 The Corda vision is a _______ in which all economic factors can transact with full privacy, autonomy, and security, and in an auditable manner.
A. Shared global logical ledger
B. Platform
C. Central database
D. Network
Ans : Shared global logical ledger
Q.5 Every node in the R3 Corda network has the same view of the ledger.
A. True
B. False
Ans : False
Q.6 R3 Corda is a private, permissioned blockchain.
A. True
B. False
Ans : True
Q.7 __________ is a distributed ledger technology where data is stored in the form of blocks.
A. Blockchain
B. Database
C. Cryptocurrency
D. Contracts
Ans : Blockchain
Q.8 _______ include data shared between two more or more nodes in a network.
A. Data
B. Messages
C. Shared fact
D. Contracts
Ans : Contracts
Q.9 ________ are a set of rules that determine the execution of a transaction.
A. Program
B. Instruction
C. Tables
D. Contracts
Ans : Contracts
Q.10 Communication between nodes occur in the context of flows, and is point to point.
A. True
B. False
Ans : True
Q.11 ___________ is the core business logic on which CorDapps run.
A. Transaction
B. Contract
C. Legal prose
D. Flow framework
Ans : Transaction
Q.12 A Flow Library contains a set of ______ used for common tasks like notarizing a transaction, gathering required signatures, etc. A. Flows
B. Contracts
C. Transactions
D. Cordapps
Ans : Flows
Q.13 Corda states are immutable objects.
A. True
B. False
Ans : True
Q.14 Every node in an R3 Corda network has ______ associated with it.
A. Instances
B. States
C. Objects
D. Private databases
Ans : Objects
Q.15 A Flow Library contains a set of ______ used for common tasks like notarizing a transaction, gathering required signatures, etc.
A. Flow
B. Contracts
C. Cordapps
D. Transactions
Ans : Flow
Q.16 A _______ is a database in the node where all states are stored.
A. State database
B. Central database
C. Vault
D. Blockchain
Ans : State database
If the data of a block is changed, the ______ associated with it also changes.
Ans:-hash
______is the process by which network participants reach an agreement regarding shared facts in a ledger.
Agreement
Contracts
Consensus
Legal Prose
CorDapps are a set of JAR files that contain class files written in Java or Kotlin.
A)TRUE.
B)FALSE.
Ans:-True
Where are new CorDapps installed to define the behavior of a node?
Ans:-The CorDapp provider
Q.17 What are the two types of transactions?
A. Notary change and Generic
B. Common and Special
C. Dynamic and Static
D. State and Non-state
Ans : Notary change and Generic
Q.18 ___________ is the core business logic on which CorDapps run.
A. Contract
B. Transaction
C. Fow Framework
D. Legal Prose
Ans : Transaction
Q.19 What happens when shared facts associated with a node change?
A. States are modified.
B. Old states are marked historic, and new states are created.
C. Old states are deleted, and new states are created
D. Old and new states are merged.
Ans : Old states are marked historic, and new states are created.
Q.20 Oracles are an external piece of information used by contracts.
A. True
B. False
Ans : True
Q.21 A _______ is a database in the node where all states are stored.
A. Blockchain
B. State database
C. Central database
D. Vault
Ans : Vault
Q.22 What service is used to discover nodes on a Corda network?
A. Finder service
B. Searching service
C. Discovery service
D. Network map service
Ans : Network map service
Q.23 Validity Consensus and Uniqueness Consensus are the two types of consensus.
A. True
B. False
Ans : True
Q.24 A Corda network needs certificates to maintain the unique identity of nodes.
A. True
B. False
Ans : True
Q.25 A ______ is a JVM runtime environment that has a unique identity on the Corda network.
A. Contract sandbox
B. Node
C. Transaction
D. Network identifier
Ans : Node
Q.26 Uniqueness consensus solves the ______ problem.
A. Zero spending
B. Verification
C. Agreement
D. Double spending
Ans : Double spending
Q.27 ______ are applications that execute Smart contracts on the Corda platform.
A. Distributed app
B. dapps
C. Cordapps
D. Smart app
Ans : Cordapps
Q.28 Which of the following transactions have zero inputs?
A. Opening
B. Genesis
C. Issuance
D. Intial
Ans : Issuance
Q.29 Which of the following transactions have no output?
A. Issuance
B. Exits
C. Terminal
D. Genesis
Ans : Exits
Q.30 Corda was initially developed for ______ institutions.
A. Political
B. Educational
C. Cultural
D. Financial
Ans : Financial
Q.31 ______ are large chunks of data that can be reused across multiple transactions, and are also used for transaction validity.
A. Attachments
B. Oracles
C. Transactions
D. Files
Ans : Attachments
Q.32 ________ are unique time-stamping services that order transactions, and are responsible for consensus in the Corda network. A. Flow framework
B. Smart contracts
C. Notary pool
D. Transaction pool
Ans : Notary pool
Q.33 When new states are created, old states are not deleted, but marked as ______.
A. Extinct
B. Historic
C. Deprecated
D. Obselete
Ans : Historic
Q.34 A Genesis block is the first block of the blockchain.
A. True
B. False
Ans : True
Q.35 Notary clusters are classified according to their ______ and consensus algorithms.
A. Structure
B. Visibility
C. Content
D. Size
Ans : Structure
Q.36 Spreading transaction load over multiple notary clusters to allow higher transaction throughput is called?
A. Transaction distribution
B. Transaction split
C. Load balancing
D. Transaction processing
Ans : Load balancing
Q.37 Transactions are atomic in nature.
A. True
B. False
Ans : True
Q.38 R3 Corda and Bitcoin use which computational model.
A. Unspent Transaction Output (UTXO)
B. Internal Execution
C. Virtual Computing
D. Modular
Ans : Unspent Transaction Output (UTXO)
Q.39 Each block in a blockchain contains the hash of the _________.
A. Next block
B. Previous block
C. Genesisblock
Ans : Previous block
Q.40 ______ is a superset of blockchain technology, and both terminologies are used interchangeably.
A. Bitcoin
B. Ethereum
C. Distributed Ledger Technology
D. Multichain
Ans : Distributed Ledger Technology
Q.41 The Corda network is like a complete graph where all the nodes are connected.
A. True
B. False
Ans : True