Ethereum Standards and Proposal Processes BDC Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   Which function is part of the ERC-20 standard and is used to transfer tokens from the caller's address to another address?

   • AtransferFrom
   • Bapprove
   • CbalanceOf
   • Dtransfer
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A developer is creating a new token standard for loyalty points and wants to publish it as a community standard that applications can implement. They are unsure whether to label it as an EIP or an ERC. What is the correct distinction?

   • AAn EIP is for protocol changes, and an ERC is for smart contract bugs
   • BAll token standards are EIPs, and ERC is just a marketing term
   • CAn ERC is an EIP that focuses on application-level standards, such as token interfaces
   • DERC standards are created by the Ethereum Foundation, while EIPs are community-driven
   Reveal Solution Discussion Select an answer first
4. 28application · medium

   A developer is auditing an ERC-20 token contract and notices that the transfer function does not emit a Transfer event. What is the primary concern with this implementation?

   • AWallets and explorers will not be able to track token movements reliably
   • BThe contract will be vulnerable to reentrancy attacks
   • CThe contract will not compile
   • DThe token will be considered non-fungible
   Reveal Solution Discussion Select an answer first
5. 29foundation · easy

   What is the role of an EIP editor in the EIP process?

   • ATo vote on whether the EIP should be accepted.
   • BTo write the technical implementation of the EIP.
   • CTo review and manage the EIP's status, ensuring it meets formatting and procedural requirements.
   • DTo fund the development of the EIP.
   Reveal Solution Discussion Select an answer first
6. 30application · medium

   A startup is building a wallet that must support a wide range of tokens. They want to ensure that users can send and receive any token that follows a common standard. What is the most important reason to support ERC-20 in their wallet?

   • AERC-20 is widely adopted, so supporting it ensures interoperability with most tokens
   • BERC-20 is the only standard that allows smart contracts to hold tokens
   • CERC-20 is the only standard that emits Transfer events
   • DERC-20 tokens are more secure than other standards
   Reveal Solution Discussion Select an answer first