____ communications through public dial-up lines and leased telephone lines represent the most basic WAN carrier communications.
A)SONET
B)ISDN
C)Point-to-point
D)T-carrier

Question

Quizplus · Accepted Answer

Point-to-point communications refer to the use of dedicated circuits or leased lines to establish a direct connection between two locations. This type of communication is often used in WANs, and can be done through public dial-up lines or leased telephone lines. Options A, B, and D are all specific types of WAN carrier communications, but they are not the most basic. SONET is a synchronous optical network that uses fiber optic cables, ISDN is an integrated services digital network that uses switched digital connections, and T-carrier is a series of digital transmission systems used for voice and data communication over long distances.

____ Communications Through Public Dial-Up Lines and Leased Telephone Lines