CompTIA Network+ (N10-009) — Question 280

Which of the following OSI model layers can utilize a connectionless protocol for data transmission?

Answer options

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

Correct answer: C

Explanation

The Transport layer (C) is designed to provide end-to-end communication services and can use connectionless protocols like UDP. The Physical layer (A) is concerned with the physical transmission of data, the Network layer (B) handles routing and forwarding of packets but can use both connection-oriented and connectionless protocols, while the Application layer (D) is focused on application-level protocols and does not directly manage data transmission methods.