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Which of the following middleware is used for binding the app object with the help of the app.use() method?

27. Which of the following middleware is used for binding the app object with the help of the app.use() method?

1. Application-level-middleware
2. Router-level-middleware
3. User level middleware
4. Built-in-level middleware

Answer: A) Application-level-middleware

Explanation:

Application-level middleware is used for binding the app object with the help of the app.use() method.