What is the primary function of the OSI Network Layer and which protocol is central at this layer?

• A. It handles logical addressing and routing; IP is the core protocol here.
• B. It provides end-to-end reliability and flow control; TCP is the core protocol.
• C. It manages physical transmission and bit timing; Ethernet is the core protocol.
• D. It handles session management and data formatting; SSH is the core protocol.

Answer: (A)