Which choice lists the required elements for HTTP to function?

Question

Options

• AServer, HTML and DNS
• BClient, server and TCP/IP
• CBrowser, HTML and TCP/IP
• DClient, Web page and DNS

• A
  2% (1)
• B
  89% (39)
• C
  2% (1)
• D
  7% (3)

Explanation

Option B is correct because HTTP is an application-layer protocol that operates between a client (any requester, not just a browser) and a server (the host responding to requests), transmitted over TCP/IP, which provides the reliable transport layer HTTP depends on. HTTP cannot function without all three of these components - they form the fundamental communication model.

Why the others are wrong:

• A (Server, HTML, DNS): Missing a client entirely; DNS resolves domain names but is optional (you can reach a server via direct IP); HTML is just one possible content type, not a protocol requirement.
• C (Browser, HTML, TCP/IP): "Browser" is too narrow - any HTTP client (curl, API consumers, scripts) qualifies, not just browsers; HTML is content, not infrastructure.
• D (Client, Web page, DNS): A "web page" is content, not a protocol component; DNS is a helpful name-resolution service but not required for HTTP itself; TCP/IP is conspicuously absent.

Memory tip: Think of HTTP as a phone call - you need a caller (client), a receiver (server), and a phone network (TCP/IP). Everything else - the language you speak, the phone brand, the phonebook (DNS) - is optional extras.

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