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HTTP

What is a HTTP 200 status code?

  • OK
  • Created
  • Accepted
  • No Content

What is a HTTP 201 status code?

  • OK
  • Created
  • Accepted
  • No Content

What status code is returned when a resource is not found?

  • 200
  • 201
  • 404
  • 500

What request is used to validate a resource?

  • GET
  • POST
  • PUT
  • HEAD

What is a RESTful API?

  • An API that uses HTTP methods.
  • An API that uses HTTP methods and follows the REST architectural style.
  • An API that uses HTTP methods and follows the REST architectural style and uses JSON as the data format.
  • An API that uses HTTP methods and follows the REST architectural style and uses JSON as the data format and uses hypermedia links.

What is the difference between a PUT and a POST request?

  • PUT is used to create a resource. POST is used to update a resource.
  • PUT is used to update a resource. POST is used to create a resource.
  • PUT is used to update a resource. POST is used to create a resource or update a resource.
  • No difference.

Which of the following header will instruct the browser to not cache the response?

  • Cache-Control: no-cache
  • Cache-Control: no-store
  • Cache-Control: must-revalidate
  • All of the above

What is the difference between a 301 and a 302 redirect?

  • They are the same.
  • 301 is a temporary redirect. 302 is a permanent redirect.
  • 301 is a permanent redirect. 302 is a temporary redirect.
  • None of the above.

What request is sent by a browser when a user clicks on a link?

  • GET
  • POST
  • PUT
  • GET or POST

What request is sent by a browser by default when a user submits a form?

  • GET
  • POST
  • PUT
  • GET or POST

HEAD and GET requests are identical except that the HEAD request has no response body.

  • True
  • False
  • None of the above

When should you use a HEAD request?

  • When you want to create a resource.
  • When you want to update a resource.
  • When you want to get information about a resource.
  • When you want to delete a resource.

What is the purpose of the Accept header?

  • To tell the server what type of response the client is expecting.
  • To tell the server what type of request the client is sending.
  • To tell the server the size of the request body.
  • To tell the server the size of the response body.

What is the purpose of the Content-Type header?

  • To tell the server what type of response the client is expecting.
  • To tell the server the nature of the request body.
  • To tell the client the nature of the response body.

What is the importance of the gzip compression?

  • To reduce the size of the request body.
  • To reduce the size of the response body.
  • To reduce the size of the request body and the response body.
  • None of the above.

What is the purpose of the If-Modified-Since request header?

  • The server should only send the resource if the resource has been modified since the specified date.
  • The resource should only be modified if the resource has been modified since the specified date.
  • The server should only send the resource date
  • The server should update the resource date and send the resource.

What is the purpose of the ETag header?

  • The request header that uniquely identifies the version of the resource.
  • The response header that names the resource.
  • The date the resource was last modified.
  • The response header that uniquely identifies the version of the resource.

What is the difference between HTTP and HTTPS?

  • HTTP is used for static websites. HTTPS is used for dynamic websites.
  • HTTP is used for dynamic websites. HTTPS is used for static websites.
  • HTTPS is HTTP over TLS/SSL.
  • HTTP is used for websites. HTTPS is used for APIs.

What is the purpose of the Access-Control-Allow-Origin header?

  • To tell the server what type of response the client is expecting.
  • To tell the client which origins are allowed to access the resource.
  • To tell the server the nature of the request body.
  • To tell the client the nature of the response body.

What is a CORS preflight request?

  • A request that is sent by the server to the client to check if the client is allowed to access the resource.
  • A request that is sent by the client to the server to check if the client is allowed to access the resource.
  • A request that is sent by the server to the client to check if the server is allowed to access the resource.
  • CORS does not require a preflight request.

What is a CACHE MISS?

  • When resource is not found in the cache.
  • When resource is found in the cache.
  • When resource can not be found.
  • When the resource is stale.

What is a CACHE HIT?

  • When resource is not found in the cache.
  • When resource is found in the cache.
  • When resource can not be found.
  • When the resource is stale.

What is the purpose of the Cache-Control header?

  • To tell the server what type of response the client is expecting.
  • To tell the client how to cache the response.
  • To tell the client the nature of the response body.
  • To tell the server the nature of the request body.