Which encoding is used to convert a URL into valid ASCII format so it can be safely transmitted over HTTP?

• A. HTML Encoding
• B. Base64 Encoding
• C. URL Encoding
• D. UTF-8

Answer: (C)

URL encoding is used to convert a URL into valid ASCII format so it can be safely transmitted over HTTP. It does this by replacing unsafe or reserved characters with a percent sign followed by two hexadecimal digits (for example, a space becomes %20). Non‑ASCII characters are first turned into their UTF‑8 bytes and then percent‑encoded, ensuring the entire URL stays within ASCII. This is specifically what you need for safe transport of URLs; HTML encoding escapes characters for HTML rendering, Base64 is for binary data, and UTF‑8 is a general text encoding, not a mechanism to make URLs ASCII-safe.