Systems Security Certified Practitioner (SSCP) — Question 126

Which of the following security-focused protocols has confidentiality services operating at a layer different from the others?

Answer options

• A. Secure HTTP (S-HTTP)
• B. FTP Secure (FTPS)
• C. Secure socket layer (SSL)
• D. Sequenced Packet Exchange (SPX)

Correct answer: A

Explanation

Secure HTTP (S-HTTP) operates at the application layer and focuses specifically on securing HTTP transactions, providing confidentiality. In contrast, FTPS, SSL, and SPX operate at different layers and do not primarily focus on HTTP-specific confidentiality services, making S-HTTP distinct in this context.