Web Development Web Development 2

Question 1

Which HTTP status code indicates that a resource has been permanently moved to a new URL?

Accepted Answer

301 Moved Permanently

Answer

301 Moved Permanently tells clients and search engines to update their links to the new URL.

Question 2

In CSS Flexbox, which property controls the alignment of items along the cross axis?

Accepted Answer

align-items

Answer

align-items controls how flex children are aligned along the cross axis (perpendicular to the main axis).

Question 3

What does the 'defer' attribute do when added to a <script> tag?

Accepted Answer

Downloads the script in parallel and executes after HTML parsing completes

Answer

The defer attribute downloads the script without blocking HTML parsing and runs it after the document is fully parsed.

Question 4

Which JavaScript method creates a shallow copy of an array?

Accepted Answer

All of the above

Answer

Array.from(), slice(), and concat([]) all produce a new shallow copy of the original array.

Question 5

In REST API design, which HTTP method is idempotent but NOT safe?

Accepted Answer

DELETE

Answer

DELETE is idempotent (same result if called multiple times) but not safe because it modifies server state.

Web Development Practice Test