In order to confirm the identity of the person entering an account, a verification code is given to a different device. It's used for two-factor authentication.
Active Management
Active management in crypto refers to an investment strategy where portfolio managers actively make buying and selling decisions to try to outperform the market and generate higher returns.
Governance Token
Developers design governance tokens to let token holders influence the direction of a protocol.
Mainnet
A mainnet is a separate blockchain that operates on its own network using its own protocol and technologies.