What layer of the OSI/ISO model does Point-to-point tunneling protocol (PPTP) work at?
A.
Data link layer
B.
Transport layer
C.
Session layer
D.
Network layer
Explanation:
PPTP works at the data link layer.Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 708