Which is not true of dedicated lines?

A.
More secure than using public networks

B.
Connect two locations

C.
Inflexible and expensive

D.
Use packet-switching technology

Explanation:
One of the biggest advantages of dedicated lines is that the
connection is private, meaning that it is not a shared medium. This characteristic
provides more security. Dedicated lines are usually much more expensive than
public-switched technologies as in frame relay, X.25, and SMDS.