Rest discussion questions

restd.md

RESTful API Discussion Questions

1. What are the HTTP Methods in RESTful API and when would you use each of these?
2. What does this HTTP Status codes represent?
   • 1xx
   • 2xx
   • 3xx
   • 4xx
   • 5xx
3. What is the difference between the following response functions?
   • res.send()
   • res.json()
   • res.render()
4. What are the appropriate status code for the following:
   • Status Code OK
   • Status Code Bad Request
   • Status Code Unauthorized
   • Status Code Forbidden
   • Status Code Not Found
   • Status Code Internal Server Error

Team members Names: Muna Al Haj Eid, Jafar Bino, Yara Jaber, Lin dabul.

1. The main HTTP methods used in RESTful APIs are:

• GET: Used to retrieve data from a server. GET requests should only retrieve data and not modify it. It's commonly used for fetching information like fetching a specific resource or a collection of resources.
• POST: Used to send data to the server to create a new resource. POST requests are used for creating new resources on the server. For example, when submitting form data or creating a new record in a database.
• PUT: Used to update an existing resource or create a resource if it doesn't exist. PUT requests usually require sending the entire resource with the updated data to the server. It replaces the existing resource with the new one provided.
• PATCH: Similar to PUT, but instead of sending the entire resource, PATCH is used to apply partial modifications to a resource. It's used when you want to update specific fields of an existing resource.
• DELETE: Used to remove a resource from the server. DELETE requests are used for deleting a specific resource identified by a URL.
• OPTIONS: Used to describe the communication options for the target resource. It specifies which HTTP methods are allowed for a specific resource.
• HEAD: Similar to GET but only retrieves the headers of the response without the actual body content. It's used to get metadata about a resource without getting the resource itself, useful for checking the validity or existence of a resource.
  When to use each method:
• GET: Use when you want to retrieve data from the server.
• POST: Use when you want to create a new resource on the server.
• PUT: Use when you want to update an existing resource or create a new resource if it doesn't exist.
• PATCH: Use when you want to partially update an existing resource.
• DELETE: Use when you want to remove a resource from the server.
• OPTIONS: Typically used for discovering what HTTP methods and other options are supported by a web server.
• HEAD: Use when you need metadata or headers of a resource without fetching the entire content.

2. Status Codes:

• 1xx: Informational - Request received, continuing process.
• 2xx: Success - The action was successfully received, understood, and accepted.
• 3xx: Redirection - Further action needs to be taken in order to complete the request.
• 4xx: Client Error - The request contains bad syntax or cannot be fulfilled.
• 5xx: Server Error - The server failed to fulfill a valid request.

4. The difference between the response functions

• res.send() is a method that can sending a response. The method will be like res.send([body]) the body could be:( Buffer, String, Object, Array). this method will automatically sets the Content-Type for ex: passing a string, it will set the Content-Type header to text/html
• res.json() this method is same as res.send() but it used specifically to sends a JSON response. It sets the Content-Type header to application/json and also it converts non-objects to json.
• res.render() this methoth is used to render a view and sends the rendered HTML string to the client. It will compile the template, inserts locals there, and creates html output out of those two things.

5. The appropriate status code:

• Status Code OK (200)
• Status Code Bad Request (400)
• Status Code Unauthorized (401)
• Status Code Forbidden (403)
• Status Code Not Found (404)
• Status Code Internal Server Error (500)

Room 6: Belal, Mahmoud, Hammam, Baraa.

What are the HTTP Methods in RESTful API and when would you use each of these?

• GET: Requests a representation of the specified resource. Requests using GET should only retrieve data.
• HEAD: Asks for a response identical to that of a GET request, but without the response body.
• POST: Used to submit an entity to the specified resource, often causing a change in state or side effects on the server.
• PUT: Replaces all current representations of the target resource with the request payload.
• DELETE: Requests to delete the specified resource.
• CONNECT: Establishes a tunnel to the server identified by the target resource.
• OPTIONS: Used to describe the communication options for the target resource.
• TRACE: Performs a message loop-back test along the path to the target resource.
• PATCH: Used to apply partial modifications to a resource.

What does this HTTP Status codes represent?

• 1xx - Informational: The server has received the request and is continuing the process
• 2xx - Successful: The request was successful and the browser has received the expected information
• 3xx (Redirection): You have been redirected and the completion of the request requires further action
• 4xx (Client Error): The website or the page could not be reached, either the page is unavailable or the request contains bad syntax
• 5xx (Server Error): While the request appears to be valid, the server could not complete the request

What is the difference between the following response functions?

• res.send(): function basically sends the HTTP response. it accepts a single parameter body. The body parameter can be a String or a Buffer object or an object or an Array. It returns an Object.
• res.json(): function sends a JSON response. This method sends a response (with the correct content-type) that is the parameter converted to a JSON string using the JSON.stringify() method. (Sends data in JSON format and ends the request.)
• res.render(): used to render a view and sends the rendered HTML string to the client.

What are the appropriate status code for the following:

• Status Code OK: 200
• Status Code Bad Request: 400
• Status Code Unauthorized: 401
• Status Code Forbidden: 403
• Status Code Not Found: 404
• Status Code Internal Server Error: 500