Which protocol is considered the modern successor for securing communications in transit?

• A. Transport Layer Security
• B. Trusted LAN System
• C. Transport Layer Service
• D. Transport Layer Standard

Answer: (A)

Securing data as it travels between endpoints relies on a protocol that provides encryption, integrity, and authentication. Transport Layer Security delivers exactly that, making it the modern standard for protecting communications in transit. It replaced the older SSL protocol and is now the backbone of secure channels across the Internet, including HTTPS, mail, and other services. TLS uses certificates to verify identities and cryptographic keys to protect confidentiality, integrity, and authenticity. Newer versions, like TLS 1.3, improve security and performance by simplifying the handshake and removing outdated algorithms, while often enabling perfect forward secrecy with ephemeral keys. Because of its strong security guarantees, widespread adoption, and ongoing improvements, TLS is the go-to choice for securing communications in transit today.