Which of the following is not a characteristic of a tunnel?

a. Connection between two endpoints
b. Encapsulates data inside a known protocol
c. Is like a physical circuit
d. Appears as a dedicated connection

c. Is like a physical circuit
Explanation: A tunnel is created by an encapsulation technique, which encapsulates the data inside a known protocol (IP) agreed upon by the two endpoints. A tunnel creates a virtual circuit-like between the two endpoints and makes the connection appear like a dedicated connection, even though it spans over the Internet infrastructure.