Generally, you need to have a client when connecting to the blockchain network. There are different types of nodes: full node, light node, mining node and relay node. In this article, we will focus on how a light client node works because not everyone can run a validator node (full node) in Libra since it is a permissioned blockchain. Instead of fully verifying all transactions and blocks, light clients only need to download block headers and verify if interested transactions are included in the block. Light clients are run by devices that do not have huge computation power and bandwidth.
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