What is a domain name?

• A. A numerical identifier for a computer
• B. A program used to create websites
• C. The human-readable address of a website
• D. A type of internet security protocol

Answer: (C)

A domain name serves as the human-readable address of a website, allowing users to easily access web pages without needing to remember complex numerical IP addresses. When someone types a domain name into a web browser, the browser translates that name into an IP address to locate the website's server. This makes the internet more accessible and user-friendly since memorizing alphanumeric addresses would be cumbersome.

In contrast, the other options do not accurately define a domain name. A numerical identifier for a computer refers to an IP address, which is essential for routing data across the internet but lacks the user-friendliness of a domain name. A program used to create websites refers to website development software or platforms, which is a separate function from what a domain name provides. Lastly, a type of internet security protocol relates to methods like HTTPS or SSL used to secure data transmission online, again distinct from the function of a domain name.