Which protocol is commonly used for secure data transmission over the internet?

Question

Options

• ATelnet
• BHTTPS
• CFTP
• DHTTP

• A
  5% (2)
• B
  93% (40)
• C
  2% (1)

Explanation

HTTPS (Hypertext Transfer Protocol Secure) is the correct answer because it uses TLS/SSL encryption to protect data in transit between a client and server, making it the standard protocol for secure internet communication - you'll see the padlock icon in browsers when it's active.

Why the others are wrong:

• HTTP (D) is HTTPS without the encryption layer - data is transmitted in plaintext, making it vulnerable to interception.
• FTP (C) is a file transfer protocol that also transmits credentials and data in plaintext by default; it's not designed for general secure web communication.
• Telnet (A) is a remote terminal protocol that sends everything, including passwords, unencrypted - it's considered obsolete for this reason.

Memory tip: The "S" in HTTPS stands for Secure - if a protocol ends in "S" (HTTPS, FTPS, SFTP), it has encryption bolted on. When the "S" is missing, so is the security.

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