Which statement best describes TLS in network communications?

• A. Acronym for Transmission Layer Security.
• B. A protocol used for routing data across networks.
• C. Designed with goal of providing data secrecy and data integrity between two communicating applications.
• D. It is a replacement for SSL.

Answer: (C)

TLS is all about creating a secure channel between two applications so their conversation stays private and unaltered. It achieves secrecy by encrypting the data, so someone listening in can’t read it, and it ensures data integrity by using integrity checks so tampering would be detected. It also authenticates the endpoints, typically with certificates, and negotiates encryption keys during a handshake before the actual data transfer begins. This secure channel is what protects protocols like HTTPS when you browse. It isn’t a routing protocol, so it doesn’t decide how data moves through a network, and the acronym is Transport Layer Security (not Transmission). TLS did evolve from SSL and is the modern standard, but the essential point is that its purpose is to provide secrecy and data integrity between two communicating applications.