Networking Fundamentals — Question 73

Which of the following is a Layer 2 WAN protocol?

Answer options

• A. Point-to-Point Protocol (PPP)
• B. Simple Network Management Protocol (SNMP)
• C. Transmission Control Protocol (TCP)
• D. Internet Protocol (IP)

Correct answer: A

Explanation

The correct answer is A, Point-to-Point Protocol (PPP), as it is designed specifically for establishing a direct connection between two networking nodes. The other options, such as SNMP, TCP, and IP, operate at higher layers in the OSI model, making them unsuitable as Layer 2 protocols.