Complex sentence: When determining resource availability, the application layer must decide whether sufficient network resources for the requested communication ners are identified, quality of service is identified, user authentication and privacy are considered, and any constraints on data syntax are identified.
Split into simpler sentences: When determining resource availability, the application layer must decide whether sufficient network resources for the requested communication exist. Communication partners are identified, quality of service is identified, user authentication and privacy are considered, and any constraints on data syntax are identified.