Which statement is true about TLS in network communications?

Which statement is true about TLS in network communications?

• A. It operates only at the application layer.
• B. It provides data secrecy and integrity between two communicating applications.
• C. It eliminates all network latency.
• D. It replaces TCP.

Answer: (B)

TLS creates a secure channel that guards data in transit between two endpoints by encrypting the content and applying integrity checks to detect tampering. It also authenticates the communicating parties, so you can trust you’re talking to the intended server (and optionally the client). It sits between the application and the transport layer (typically on top of TCP) and does not replace TCP. The handshake and encryption work add some latency, so TLS does not eliminate network delay. This combination—confidentiality, integrity, and authentication between two applications—is what makes TLS the correct description.

TLS creates a secure channel that guards data in transit between two endpoints by encrypting the content and applying integrity checks to detect tampering. It also authenticates the communicating parties, so you can trust you’re talking to the intended server (and optionally the client). It sits between the application and the transport layer (typically on top of TCP) and does not replace TCP. The handshake and encryption work add some latency, so TLS does not eliminate network delay. This combination—confidentiality, integrity, and authentication between two applications—is what makes TLS the correct description.