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1. 1. Which hook is normally used to register a Custom Post Type?

   You want to call register_post_type() at the point recommended by WordPress.

   Which hook is normally used to register a Custom Post Type?

   init shutdown wp_footer save_post
   Hint

   This hook runs after WordPress has loaded but before the main request is processed.

2. 2. When should a custom taxonomy normally be registered?

   Choose the conventional WordPress lifecycle hook.

   When should a custom taxonomy normally be registered?

   wp_footer admin_notices delete_post init
   Hint

   It is the same common lifecycle point used for CPT registration.

3. 3. When should a plugin normally flush rewrite rules for a new CPT?

   Choose the approach that avoids unnecessary work on normal requests.

   When should a plugin normally flush rewrite rules for a new CPT?

   Register the CPT and flush once inside the activation workflow. Rewrite rules never need flushing for a CPT. Call flush_rewrite_rules() on every init request. Flush before registering the CPT and never again.
   Hint

   Flushing is expensive and registration must happen first.

4. 4. What makes a PHP file discoverable as a WordPress plugin?

   What makes a PHP file discoverable as a WordPress plugin?

   A plugin.json file A namespace beginning with WordPress A class named Plugin A valid Plugin Name header comment
   Hint

   Look at how the Plugins screen discovers files.

5. 5. When should permanent plugin data normally be deleted?

   When should permanent plugin data normally be deleted?

   On every page load When rewrite rules are flushed On every deactivation During an explicit uninstall routine
   Hint

   A user may deactivate only to debug temporarily.

6. 6. Why should plugin post types, taxonomies, options and functions use a unique prefix or namespace?

   Why should plugin post types, taxonomies, options and functions use a unique prefix or namespace?

   To enable pretty permalinks automatically To avoid naming collisions To make queries run in parallel To bypass capability checks
   Hint

   Several plugins share the same runtime.

7. 7. Why register post meta with register_post_meta() or register_meta()?

   Why register post meta with register_post_meta() or register_meta()?

   To replace update_post_meta() in every case To create a database table for each key To disable revisions To define schema, sanitization, authorization and REST visibility
   Hint

   Think schema and access rules.

8. 8. How should a shortcode callback normally provide its markup?

   How should a shortcode callback normally provide its markup?

   Echo it directly and return true Print it during init Write it into wp_options Return the generated string
   Hint

   The content filter decides where the result belongs.

9. 9. Why do plugin PHP files often begin with an ABSPATH guard?

   Why do plugin PHP files often begin with an ABSPATH guard?

   To stop direct execution outside WordPress To load translations To create rewrite rules To activate the plugin
   Hint

   ABSPATH is defined by WordPress.

10. 10. What is unusual about variable scope inside a plugin activation callback?

    What is unusual about variable scope inside a plugin activation callback?

    WordPress skips the callback file PHP variables persist forever Only constants are available Plugin globals may not be global unless explicitly declared
    Hint

    Prefer explicit inputs and APIs.

11. 11. How should a plugin react when a required dependency is unavailable?

    How should a plugin react when a required dependency is unavailable?

    Silently corrupt its options Fail gracefully and show an actionable admin notice Trigger a frontend fatal error Edit the dependency files
    Hint

    Administrators need a recoverable state.

12. 12. What does the Settings API help a plugin manage?

    What does the Settings API help a plugin manage?

    Registered settings, sections, fields and standard form handling Custom rewrite parsing only Media compression Theme template selection
    Hint

    Think register_setting().

13. 13. What is dbDelta() designed to help with?

    What is dbDelta() designed to help with?

    Preparing SELECT placeholders Deleting all plugin options Scheduling cron events Creating or updating plugin database table schemas
    Hint

    It is commonly used during versioned migrations.

14. 14. Why store a plugin database schema version?

    Why store a plugin database schema version?

    To replace the plugin version header To run only the migrations needed after an update To bypass activation hooks To improve CSS caching
    Hint

    Activation is not guaranteed to run during every deployment pattern.

15. 15. Why should plugin strings use a consistent text domain?

    Why should plugin strings use a consistent text domain?

    To namespace database tables To register scripts To authorize REST requests So translation tools can associate strings with the plugin
    Hint

    It is part of internationalization calls.

16. 16. Which hooks handle authenticated custom form requests sent to admin-post.php?

    Which hooks handle authenticated custom form requests sent to admin-post.php?

    rest_api_init template_include wp_ajax_nopriv_{action} only admin_post_{action}
    Hint

    It is the non-AJAX administrative form endpoint.