Systems Security Certified Practitioner – SSCP – Question1054 Layer 4 of the OSI stack is known as: A. the data link layer B. the transport layer C. the network layer D. the presentation layer Show Answer Hide Answer Correct Answer: B Explanation: Source: TIPTON, Hal, (ISC)2, Introduction to the CISSP Exam presentation. Post navigation Systems Security Certified Practitioner – SSCP – Question1053Systems Security Certified Practitioner – SSCP – Question1055