A. Wireless Local Loop
B. TDM
C. Leased Line
D. Digital Subscriber Line

Solution

C. Leased Line

Explanation

The dedicated connection that establishes a permanent switched circuit that is always ready to carry network traffic is known as a leased line. Leased lines provide a constant, dedicated connection between two points, allowing for consistent and reliable communication. They are often used by businesses for internet access, private data networks, and telephone services.