How many users does the Cisco Unity Express Solution Support When installed in the Cisco 2800 Family?（）

A. The Cisco Self-Defending Network defines the physical position of the firewall to protect against internal and external attacks
B. The Cisco Self-Defending Network Provides static filtering against known and unknown internal and external attacks
C. The Cisco Self-defending Network Provides dynamic protection against known and unknown internal and external attacks
D. The Cisco Self-defending Network Provides the Elements to install the antivirus software on the End-User Workstation

A. Cisco Network Assistant
B. Cisco Security Device Manager
C. Cisco Device Manager
D. Cisco Adaptive Security Device Manager

A. Application Software Updates
B. Cisco Advisory Services
C. Advanced Hardware Replacement
D. Software Support
E. Cisco.com
F. Warranty for hardware