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General WordPress Questions

  • What is WordPress?
    • Explain the platform, its uses, and its advantages.
  • What are the key differences between WordPress.com and WordPress.org?
  • What are some of the features of WordPress?
  • How does WordPress handle security, and how would you secure a WordPress site?
  • Explain the concept of the WordPress loop.
    • Describe how it is used to display content.

Themes and Templates

  • What is the difference between a theme and a template?
  • How do you create a custom WordPress theme?
  • What is the purpose of functions.php in a WordPress theme?
  • How would you make a theme responsive?
  • What are child themes, and why are they important?

Plugins

  • What is a plugin in WordPress? How do you create one?
  • What hooks (actions and filters) have you used while developing plugins?
  • How do you debug plugin conflicts in WordPress?
  • What is the difference between add_action and add_filter?
  • How would you optimize a WordPress site with too many plugins?

Database and Core Structure

  • Which database does WordPress use?
  • Explain the structure of the WordPress database.
  • What are custom post types, and how are they different from default post types?
  • How can you create custom taxonomies in WordPress?
  • How do you back up and restore a WordPress database?

APIs

  • What is the WordPress REST API, and how do you use it?
  • Have you worked with the WP_Query class? How does it work?
  • How can you enqueue scripts and styles properly in WordPress?
  • What is the wp_ajax_ hook, and how is it used?
  • What are transients in WordPress, and when would you use them?

Performance Optimization

  • How do you optimize a WordPress site for speed?
  • What are some tools you can use to measure WordPress site performance?
  • How do you handle caching in WordPress?
  • What are some common causes of a slow WordPress site, and how do you fix them?
  • How would you implement lazy loading in WordPress?

eCommerce

  • What is WooCommerce, and how is it integrated with WordPress?
  • How do you create custom WooCommerce hooks or filters?
  • How would you handle custom checkout fields in WooCommerce?
  • What payment gateways have you integrated into a WooCommerce site?
  • How would you customize a WooCommerce single product page?

Customization

  • What are widgets in WordPress, and how do you create a custom widget?
  • How do you create a custom shortcode in WordPress?
  • What are custom fields, and how do you use them in WordPress?
  • Explain how you would modify the WordPress login screen.
  • How do you localize a WordPress theme or plugin?

Debugging and Troubleshooting

  • How do you debug a WordPress white screen of death (WSOD)?
  • What steps would you take to resolve a 500 internal server error in WordPress?
  • How do you debug JavaScript and CSS issues in WordPress?
  • What is the WP_DEBUG constant, and how is it used?
  • How do you handle WordPress updates without breaking the site?

SEO

  • What steps would you take to optimize a WordPress site for SEO?
  • What are some popular SEO plugins for WordPress, and how do you configure them?
  • How would you add structured data or schema markup to a WordPress site?
  • What is the robots.txt file, and how does WordPress handle it?
  • How do permalinks affect WordPress SEO?

Other Advanced Questions

  • What is the difference between get_template_part() and include() in WordPress?
  • How would you handle migrating a WordPress site to a new server or domain?
  • What are nonces in WordPress, and how are they used?
  • How do you schedule a cron job in WordPress?
  • Explain the difference between synchronous and asynchronous AJAX in WordPress.

Behavioral/ Scenario-Based

  • Have you ever worked on a multisite WordPress installation? If yes, what challenges did you face?
  • How would you manage a client asking for constant site changes?
  • Describe a challenging bug you resolved in a WordPress project.
  • What has been your most successful WordPress project, and why?
  • How do you stay updated with the latest WordPress trends and developments?

These questions cover a wide range of topics and are designed to evaluate both technical expertise and problem-solving skills. Prepare answers with examples from your experience to make a strong impression!

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