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Requests: manipulating data

Sending a request twice

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Imagine that you're adding a new record to a database by sending a POST request to the server. After some time, you realize that the request was sent twice.

What are the consequences of this?

Select one option from the list

Nothing happened, because such a request doesn't introduce any changes to the state of the server.

Nothing happened, sending such a request multiple times doesn't change the state of the sever.

An error occured, because identical requests can't be sent multiple times.

A duplicate record was created and added to the database.

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