CompTIA Network+ (N10-008) — Question 386

Which of the following devices and encapsulations are found at the data link layer? (Choose two.)

Answer options

• A. Session
• B. Frame
• C. Firewall
• D. Switch
• E. Packet
• F. Router

Correct answer: B, D

Explanation

The correct answers are B (Frame) and D (Switch) because the data link layer is responsible for data framing and switching. Options A (Session), E (Packet), and F (Router) pertain to higher layers of the OSI model, while C (Firewall) operates at multiple layers but is not specific to the data link layer.