单项选择题

A. The switch ports 3/1 and 3/2 will be defined as secondary VLAN community ports. The ports  connecting to the two firewalls will be defined as primary VLAN promiscuous ports.
B. The switch ports 3/1 and 3/2 and the ports connecting to the two firewalls will be defined as  primary VLAN promiscuous ports.
C. The switch ports 3/1 and 3/2 and the ports connecting to the two firewalls will be defined as  primary VLAN community ports.
D. The switch ports 3/1 and 3/2 will be defined as secondary VLAN isolated ports. The ports  connecting to the two firewalls will be defined as primary VLAN promiscuous ports.