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1. 1. What does it mean that HTTP is stateless?

   What does it mean that HTTP is stateless?

   Only GET requests are allowed Servers cannot store data Each request is independent unless state is added through mechanisms such as sessions or cookies Browsers cannot send headers
   Hint

   Focus on what crosses the client/server or local/remote boundary.

2. 2. What is an HTTP request header?

   What is an HTTP request header?

   A PHP class name Metadata sent with a request A database row The visible page heading
   Hint

   Focus on what crosses the client/server or local/remote boundary.

3. 3. What does the Content-Type header describe?

   What does the Content-Type header describe?

   The media type of the message body The user role The browser window size The database engine
   Hint

   Focus on what crosses the client/server or local/remote boundary.

4. 4. What does the Accept request header communicate?

   What does the Accept request header communicate?

   The submitted password Response media types the client can handle A PHP return type The server IP only
   Hint

   Focus on what crosses the client/server or local/remote boundary.

5. 5. Where is a URL query string located?

   Where is a URL query string located?

   Only in a cookie Before the scheme After the question mark in the URL Inside the DNS record
   Hint

   Focus on what crosses the client/server or local/remote boundary.

6. 6. Why must form values sometimes be URL-encoded?

   Why must form values sometimes be URL-encoded?

   To create user capabilities To represent reserved and non-ASCII characters safely in URL-form data To encrypt them permanently To convert them into SQL
   Hint

   Focus on what crosses the client/server or local/remote boundary.

7. 7. What does an HTML form action specify?

   What does an HTML form action specify?

   The submit button color The PHP version The database table The URL that receives the submission
   Hint

   Focus on what crosses the client/server or local/remote boundary.

8. 8. Where are successful controls normally encoded for a GET form?

   Where are successful controls normally encoded for a GET form?

   In the URL query string In the DNS cache In a PHP class Only in response headers
   Hint

   Focus on what crosses the client/server or local/remote boundary.

9. 9. Where is ordinary POST form data normally sent?

   Where is ordinary POST form data normally sent?

   In the URL fragment In a CSS file In the request body In the status code
   Hint

   Focus on what crosses the client/server or local/remote boundary.

10. 10. What commonly happens when an unchecked checkbox is submitted?

    What commonly happens when an unchecked checkbox is submitted?

    The browser rejects the form Its name is omitted from the submitted form data It always sends false It sends the label text
    Hint

    Focus on what crosses the client/server or local/remote boundary.

11. 11. Which form encoding is required for file uploads?

    Which form encoding is required for file uploads?

    image/form application/sql multipart/form-data text/css
    Hint

    Focus on what crosses the client/server or local/remote boundary.

12. 12. Why must server-side validation remain even when the form uses browser validation?

    Why must server-side validation remain even when the form uses browser validation?

    Servers cannot read form values HTML validation is always slower JavaScript encrypts all values Clients can bypass or alter browser-side checks
    Hint

    Focus on what crosses the client/server or local/remote boundary.

13. 13. What does a 302 response instruct a client to do?

    What does a 302 response instruct a client to do?

    Cache the response forever Delete the resource Temporarily request another URL from the Location header Treat the response as JSON
    Hint

    Focus on what crosses the client/server or local/remote boundary.

14. 14. Why use the Post/Redirect/Get pattern after a successful form submission?

    Why use the Post/Redirect/Get pattern after a successful form submission?

    To reduce accidental resubmission when the result page is refreshed To store passwords in the URL To disable browser history To skip authorization
    Hint

    Focus on what crosses the client/server or local/remote boundary.

15. 15. What is JSON?

    What is JSON?

    A PHP framework A database server A text format for structured data An encryption protocol
    Hint

    Focus on what crosses the client/server or local/remote boundary.

16. 16. Which JSON value is an object?

    Which JSON value is an object?

    Hello ["Hello"] title=Hello {"title":"Hello"}
    Hint

    Focus on what crosses the client/server or local/remote boundary.

17. 17. Which JSON value is an array?

    Which JSON value is an array?

    draft|publish {"draft":"publish"} (draft,publish) ["draft","publish"]
    Hint

    Focus on what crosses the client/server or local/remote boundary.

18. 18. How must JSON object property names be quoted?

    How must JSON object property names be quoted?

    With backticks With double quotes With single quotes only They must never be quoted
    Hint

    Focus on what crosses the client/server or local/remote boundary.

19. 19. Are comments part of the standard JSON syntax?

    Are comments part of the standard JSON syntax?

    Only inside arrays Yes, using # Yes, using // No
    Hint

    Focus on what crosses the client/server or local/remote boundary.

20. 20. Why might an API return JSON instead of HTML?

    Why might an API return JSON instead of HTML?

    JSON grants authentication JSON provides structured data that clients can process independently of presentation JSON always uses less data in every case HTML cannot contain text
    Hint

    Focus on what crosses the client/server or local/remote boundary.