There is no homework for this lesson, but there may be spot checks.
The topic of this lesson: cold wallets and hot wallets
Cold wallets can also initiate transfers: transactions are signed on an offline device, then broadcast through an internet-connected device.
Store long-term idle assets in a cold wallet, and keep only a small amount of funds needed for daily use in a hot wallet.
Many people put long-term holdings of $BTC into a cold wallet, and put what they need for daily use into a hot wallet.

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