CompTIA Network+ (N10-009) — Question 281

Which of the following is the OSI model layer that uses a connectionless protocol for packet delivery?

Answer options

• A. Physical
• B. Network
• C. Transport
• D. Application

Correct answer: B

Explanation

The correct answer is B, Network, as this layer is responsible for routing packets across the network using connectionless protocols like IP. The Physical layer (A) deals with the transmission of raw data, the Transport layer (C) ensures reliable delivery, and the Application layer (D) provides network services to applications, none of which operate under a connectionless framework.