Which component of the Cisco 800, 1800, 2800, and 3800 Series ISRs can be used to enableimportant security and storage capabilities?（）

A. RIP does not support routing contexts
B. routing contexts are implemented in a single routing process
C. routing contexts are implemented using multiple routing processes
D. routing contexts are implemented as several instances of a single routing process
E. routing contexts are implemented as a single instance of several routing processes

A. Cisco MWAM
B. Cisco SDM
C. Cisco NAC Appliance
D. Cisco Unified Communications Manager Express

A. high availability
B. strengthened security
C. improved connectivity options
D. continuity of service