CISSP-ISSAP: Information Systems Security Architecture Professional

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QuestionQ22

VerifiedSecurity Architecture Modeling

The OSI model is the networking model most commonly used in the industry. Applications, network functions, and protocols are generally referenced by one or more of the seven OSI layers. From the following, select the two statements that best describe OSI layer functions. Each correct answer represents a complete solution.

Choose two
Explanation

The Session, Presentation, and Application layers (5–7) provide session control, data formatting or representation, and application-level network services. The Physical, Data Link, Network, and Transport layers (1–4) handle physical connectivity, framing and encapsulation, IP addressing and routing, and end-to-end transport functions such as error recovery.

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