Chainlink

What is the primary purpose of Chainlink VRF (Verifiable Random Function) in a Polygon dApp?

• Generating secure random numbers

• Accessing real-world data feeds

• Automating smart contract functions

• Facilitating cross-chain communication

Which Chainlink service provides decentralized price reference data for popular cryptocurrencies and assets on Polygon?

• Chainlink Price Feeds

• Chainlink VRF

• Chainlink Automation

• Chainlink Functions

How do Polygon developers typically integrate Chainlink oracles into their smart contracts?

• Using the Chainlink client contract

• Calling the Chainlink node API directly

• Interacting with the Chainlink Operator contract

• Both a and c

What is the recommended way to handle Chainlink node fees when deploying a Polygon dApp?

• Require users to pay the fees

• Incorporate the fees into the dApp's pricing model

• Maintain a reserve of LINK tokens to pay the fees

• Negotiate a discounted rate with Chainlink node operators

Which Chainlink feature enables Polygon dApps to automate the execution of smart contract functions based on external triggers?

• Chainlink Price Feeds

• Chainlink VRF

• Chainlink Automation

• Chainlink Functions

What is a Chainlink CCIP Lane?

• A bidirectional pathway between different blockchains

• A distinct pathway between a source and a destination blockchain, unidirectional in nature

• A protocol for creating smart contracts

• A decentralized exchange platform

What is the purpose of gasLimit in CCIP Messages?

• To specify the maximum amount of gas for executing the ccipReceive() function on the destination blockchain's contract.

• To determine the maximum amount of tokens that can be transferred using CCIP.

• To define the gas price for CCIP transactions.

• To specify the maximum transaction fee for CCIP messages.