In what format are data transmitted to and from the…

Usually in text format. The most common formats:

JSON (JavaScript Object Notation): A lightweight, easy-to-read and write format based on key-value pairs and arrays. Widely used in web development.
```
{
  "name": "Ivan",
  "age": 30,
  "city": "Moscow"
}
```
XML (Extensible Markup Language): A more verbose, hierarchical format using tags. Historically very popular, but now often replaced by JSON.
```
<user>
  <name>Ivan</name>
  <age>30</age>
  <city>Moscow</city>
</user>
```
Form-encoded (application/x-www-form-urlencoded): A format used for sending form data over HTTP. Key-value pairs are separated by &, and keys and values are encoded.
```
name=Ivan&age=30&city=Moscow
```
Multipart Form-Data (multipart/form-data): Used for sending forms containing files, or when multiple parts of data need to be sent. Each part has its own header and is separated by a boundary.
Plain Text (text/plain): A simple text format without structure. Used for transmitting unstructured data.

The choice of format depends on the application's requirements, data complexity, and compatibility with the technologies used. The data format is specified in the HTTP request header (e.g., Content-Type) and response header (e.g., Content-Type).

In what format are data transmitted to and from the server when using HTTP?