CompTIA Security+ Question A-93

The concept of rendering data passing between two points over an IP based network impervious to all but the most sophisticated advanced persistent threats is BEST categorized as which of the following?

A. Stream ciphers
B. Transport encryption
C. Key escrow
D. Block ciphers

Answer: B

Transport encryption is the process of encrypting data ready to be transmitted over an insecure network. A common example of this would be online banking or online purchases where sensitive information such as account numbers or credit card numbers is transmitted.

Transport Layer Security (TLS) is a protocol that ensures privacy between communicating applications and their users on the Internet. When a server and client communicate, TLS ensures that no third party may eavesdrop or tamper with any message. TLS is the successor to the Secure Sockets Layer (SSL).