What does the Same Origin Policy restrict in the context of web security?

• A. Accessing content from different web pages
• B. Creating cookies on a server
• C. Modifying HTML with CSS
• D. Loading different scripts from multiple domains

Answer: (A)

The Same Origin Policy is a crucial security measure designed to protect web applications from malicious activities. It restricts how documents or scripts loaded from one origin can interact with resources from another origin. By 'origin,' we refer to a combination of the protocol (HTTP or HTTPS), domain (example.com), and port (HTTP default is 80, HTTPS is 443).

When the Same Origin Policy is in effect, a web page can only make requests to the same domain that served it. This means that if a script is loaded from one origin, it can't access the content or data from a different origin. This restriction helps prevent malicious websites from gaining access to sensitive information (like session cookies or personal user data) from another site a user may be visiting.

In contrast, accessing content from different web pages is strictly controlled by this policy. While other options mention aspects of web functionality (like creating cookies or loading scripts), they do not directly capture the essence of what the Same Origin Policy aims to guard against—unauthorized inter-origin requests that could compromise security and user data.