R3 Corda Application in Blockchain Finance BFC Practice Questions (Page 9)

Questions 41–43

1. 41foundation · easy

   How does Corda achieve consensus on the validity of a transaction?

   • AA central authority validates all transactions and broadcasts the result
   • BEach participating node validates the transaction against its own copy of the relevant contracts and states
   • CAll nodes in the network must validate and agree on every transaction
   • DConsensus is achieved through a proof-of-stake algorithm
   Reveal Solution Discussion Select an answer first
2. 42foundation · easy

   What is the purpose of Corda's interoperability with other enterprise platforms?

   • ATo allow Corda to run on any operating system
   • BTo provide a common user interface for all enterprise applications
   • CTo replace all existing enterprise systems with Corda
   • DTo enable data and workflow exchange between Corda and existing enterprise applications
   Reveal Solution Discussion Select an answer first
3. 43expert · hard

   A Corda application for a bond issuance has a state that includes a list of participants. The contract requires that all participants sign any transaction that updates the state. However, in a secondary market trade, the buyer and seller are the only participants, but the original issuer is also listed as a participant. What is the best way to handle this?

   • AUse a command that specifies which participants are required to sign, and only include the buyer and seller for trade transactions
   • BRequire the issuer to sign the trade transaction, even though they are not involved in the trade
   • CRemove the issuer from the participants list when the bond is issued, so they are not required to sign later trades
   • DHave the issuer delegate their signing rights to the buyer or seller
   Reveal Solution Discussion Select an answer first