单选题Which Cisco product is a software component that blocks unwanted connections and provides other gateway security functions for small business?（）A Cisco Internetwork Operating System (IOS) FirewallB Cisco Secure Access Control Server (ACS)C Cisco Firewa
题目
单选题
Which Cisco product is a software component that blocks unwanted connections and provides other gateway security functions for small business?（）
A
Cisco Internetwork Operating System (IOS) Firewall
B
Cisco Secure Access Control Server (ACS)
C
Cisco Firewall Services Module (FWSM)
D
Cisco Private Internet Exchange (PIX) Firewall