Frame relay uses a public switched network to provide:

A.
Local Area Network (LAN) connectivity.

B.
Metropolitan Area Network (MAN) connectivity.

C.
Wide Area Network (WAN) connectivity.

D.
World Area Network (WAN) connectivity.

Explanation:
Frame relay is a Wide Area Network (WAN) technology.
Incorrect Answers:
A: Frame relay is not used in local area networks. It is a WAN technology.
B: Frame relay is not used Metropolitan Area Network (MAN) networks. It is a WAN technology.
D: There is no connectivity technology named World Area Network (WAN).References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 677