Multisite network basics in Wordpress - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

What is the primary purpose of a WordPress Multisite Network?

Choose the best description of what a WordPress Multisite Network does.

A It allows managing multiple WordPress sites from a single WordPress installation.

B It creates a backup of a WordPress site automatically every day.

C It improves the speed of a single WordPress site by caching pages.

D It converts a WordPress site into a mobile app automatically.

💡 Hint

Think about how many sites you can control with one WordPress setup.

A WordPress Multisite Network lets you run many sites using one WordPress installation. This makes managing multiple sites easier.

❓ component_behavior

intermediate

What happens when you enable Multisite in WordPress?

After enabling Multisite, which of the following is true about the WordPress admin dashboard?

A You lose access to the original site’s dashboard.

B You get a new Network Admin dashboard to manage all sites.

C The dashboard automatically deletes all plugins.

D The dashboard changes color but no new features appear.

💡 Hint

Think about how you would manage multiple sites from one place.

Enabling Multisite adds a Network Admin dashboard where you can manage all sites in the network.

📝 Syntax

advanced

Which code snippet correctly enables Multisite in wp-config.php?

Select the correct line to add to wp-config.php to enable Multisite.

A define('ALLOW_MULTISITE', true);

B define('ENABLE_MULTISITE', true);

C define('MULTISITE_ENABLE', true);

D define('WP_ALLOW_MULTISITE', true);

💡 Hint

Look for the exact constant WordPress expects to enable Multisite.

The correct constant to enable Multisite is WP_ALLOW_MULTISITE. Other options are invalid and cause errors.

❓ state_output

advanced

What is the effect of the following code in a Multisite environment?

Given this code in a plugin activated network-wide, what will get_bloginfo('name') return on site ID 3?

Wordpress

<?php
switch_to_blog(3);
$name = get_bloginfo('name');
restore_current_blog();
echo $name;
?>

A It outputs the site title of the current site before switching.

B It causes a fatal error because switch_to_blog is not allowed.

C It outputs the site title of site ID 3.

D It outputs nothing because restore_current_blog clears the output.

💡 Hint

Think about what switch_to_blog does before calling get_bloginfo.

switch_to_blog(3) changes context to site ID 3, so get_bloginfo('name') returns that site's title. Then restore_current_blog() returns to the original site.

🔧 Debug

expert

Why does this Multisite plugin activation code fail on some sites?

This code is in a plugin activated network-wide. It tries to add a custom option to each site but only works on the main site. Why?

A Because add_option runs only once on the main site, not on each site in the network.

B Because network_admin_menu hook does not exist in Multisite.

C Because add_option requires a site ID parameter in Multisite.

D Because plugins cannot add options in Multisite networks.

💡 Hint

Consider when and where add_option runs in a network-wide plugin.

The network_admin_menu hook runs only once in the network admin, so add_option runs only for the main site. To add options on each site, you must loop through sites or use site-specific hooks.