# Network flow

## What are the data exchanged between the nodes?

Nodes relay the operations (transfers, SC origination, ...) and blocks they receive (or sometimes create) from other nodes. Since the nodes can't be trusted, they also check every information they receive. They communicate only with a subset of all the nodes in the network that can vary over time.

### What are the nodes default ports?

The main port which the node is listening on by default is 9732.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.nomadic-labs.com/nomadic-labs-knowledge-center/faq/network-flow-volume.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.