What is the difference between free and paid WordPress theme?

Free and premium WordPress themes are different in many ways. With free themes, you have to compromise with the quality as many other sites using the same theme. Problems in premium themes solved more quickly than in free themes.

Explain moderate comment in WordPress.

Comments by visitors on a post are not published directly unless the admin provides it. It is called moderation. To change comment moderation setting, select Settings option from the dashboard and check the option “Comment must be manually approved.”

How to improve security on a WordPress site.

Security in a WordPress site is essential as these websites are favorite targets for hackers. A site can’t be perfectly secured, but one can at least reduce the risk by applying different security measures.

Some of the measures to secure a WordPress site are given below:

Choosing a host
Strong password
2 step login authentication
Limit number of login attempts
Use SSL
Keep site updated

In WordPress, objects are passed by value or by reference.

In WordPress, all objects are passed by value.

Explain Tags in WordPress.

With the help of tags, similar posts can be grouped. Hence, it makes more comfortable for the users to search for a particular post. Tags are similar to categories but still different.

When was the WordPress released initially? When is it announced as open source software?

WordPress was initially released on 27th May 2003 by Matt Mullenweg and Mike Little. WordPress was announced as open source in October 2009.

What is the difference between character 23 and x23?

Here 23 specifies the octal 23 and x23 determine the hex 23.

Why is Backup important?

Backup allows you to retrieve your site back if something goes wrong or if your site breaks. There could be many reasons for this like external attack, hacking, server down.

You can lose everything from data to all the posts on your site. The backup is essential to avoid it.

Securing your backup is also an important issue. Make sure to update your plugins and themes regularly or in a specified interval. Use strong Username and Password. Database name should also be uncommon.

What is the difference between WordPress posts and pages?

WordPress posts are content published on a site with an exact date and time. They can be categorized systematically by category and tags. They are listed in reverse chronological order on a website.

WordPress pages are static and do not frequently change such as contact us, about us, privacy policy. They don?t have a date and time published. However, the database stores their published date and time.

What are WordPress Plugins?

WordPress plugins are programs written in PHP scripting language that extends the functionality or add some new features to a WordPress site. They provide additional functions to an application.