In a distributed network, what is the function of a ledger?

The function of a ledger in a distributed network plays a crucial role in ensuring transparency and trust in the data management process. A ledger serves as an immutable log of transactions, meaning that once a transaction is recorded, it cannot be altered or deleted. This characteristic is essential for maintaining integrity and accountability within the network, especially when multiple parties are involved and may not fully trust each other.

In many cases, distributed ledgers are utilized in blockchain technology, where transactions are grouped into blocks and each block is linked to the previous one, forming a secure chain. This structure not only helps prevent fraud and unauthorized modifications but also allows all participants in the network to have a consistent view of the data at any given time, thereby enhancing collaboration and efficiency.

The other options, while related to data management in different contexts, do not accurately encompass the primary role of a ledger in a distributed network. For instance, recording temporary data snapshots or providing real-time analytics does not capture the essence of a ledger's immutability and purpose in transaction verification. Additionally, acting as a central authority contradicts the decentralized nature of distributed networks, where a ledger is intended to eliminate reliance on a single point of control.