Check Point Certified Security Expert (CCSE) R81.20 — Question 119

Fill in the blank: RADIUS protocol uses ______ to communicate with the gateway.

Answer options

• A. TDP
• B. CCP
• C. HTTP
• D. UDP

Correct answer: D

Explanation

The correct answer is D, UDP, as the RADIUS protocol relies on the User Datagram Protocol for its transport. The other options (TDP, CCP, HTTP) do not serve as the transport layer protocol for RADIUS communication, making them incorrect.