【单选题】
The ERX Edge Router is configured for PPP over Ethernet without using VLAN tagging. How many PPP over Ethernet major interfaces can be configured per port?()
A、1
B、100
C、2048
D、4096
A、1
B、100
C、2048
D、4096
A、rate limiting of ICMP B、RADIUS authorizations C、source address validation D、stateful firewall on the router