Which of the following organizational resources is the lack of an enabled password or PIN a common vulnerability?

On which of the following organizational resources is the lack of an enabled password or PIN a common vulnerability?
A. VDI systems
B. Mobile devices
C. Enterprise server Oss
D. VPNs
E. VoIP phones

CS0-002: CompTIA CySA+ Exam FULL Printable PDF and Software. VALID exam to help you PASS.