多项选择题
Click the Exhibit button. host_a is in subnet_a and host_b is in subnet_b. Given the configuration shown in the exhibit, which statement is true about traffic from host_a to host_b?（）
A. DNS traffic is denied. B. Telnet traffic is denied. C. SMTP traffic is denied. D. Ping traffic is permitted.
多项选择题 Which two are characteristics of link-state routing protocols?（） (Choose two.)
多项选择题 Which two are components of the enhanced services software architecture?（） (Choose two.)
单项选择题 Which statement is true about interface-based static NAT? （）
