CorDapp Development and Lifecycle BDC Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   What is the purpose of versioning a CorDapp?

   • ATo secure the CorDapp against attacks
   • BTo track changes and ensure compatibility between nodes
   • CTo increase the CorDapp's performance
   • DTo reduce the size of the JAR file
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2. 27foundation · easy

   Which build tool is commonly used to configure and build a CorDapp project?

   • ASBT
   • BGradle
   • CAnt
   • DMaven
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4. 28foundation · easy

   What is the role of the FinalityFlow in a Corda transaction?

   • ATo sign the transaction
   • BTo build the transaction
   • CTo verify the transaction's contracts
   • DTo notarize and record the transaction on the ledger
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5. 29application · medium

   A developer is creating a new CorDapp project from scratch. They want to use Gradle to build a CorDapp JAR that can be deployed to Corda nodes. Which Gradle configuration is essential?

   • AAdd a 'shadowJar' task to create a fat JAR that includes all dependencies.
   • BApply the 'corda' plugin and configure the 'deployNodes' task to create a local test network.
   • CConfigure the 'jar' task to include the 'net.corda' package in the JAR manifest.
   • DUse the 'net.corda.plugins.cordapp' plugin and set the 'cordapp' configuration to include the CorDapp's dependencies.
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6. 30application · medium

   A developer is defining a new state class for a real estate CorDapp. The state must be able to be updated by the current owner and the bank, but only the owner can transfer it. The state should also be queryable by the property address. Which design is appropriate?

   • AImplement a LinearState with a linearId, participants containing the owner and the bank, and a propertyAddress field, and let the contract's verify() enforce the different permissions based on commands.
   • BImplement ContractState with a list of participants containing the owner and the bank, and add a command enum with TRANSFER and UPDATE commands.
   • CImplement ContractState with a list of participants containing only the owner, and store the bank's public key in a separate field.
   • DImplement ContractState with a list of participants containing the owner and the bank, and include the property address as a property.
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