You want to enhance the security within the LAN and prevent VLAN hopping. What two steps canbe taken to help prevent this？（） A: Enable BPD guard B: Disable CDP on ports where it is not necessary C: Place unused ports in a common unrouted VLAN D: Prevent automatic trunk configuration E: Implement port security

The process of loop scavenge is that the exhaust will be via ports （） the air ports and controlled by the same piston.

There are 4 I/O ports in 8051 MCU. In these ports, P has No Pull-up register in it.

Which one of the following container ports is among the top ten world busiest ports by container traffic in China.

Which of the following ports of destination is specific?

信用证规定起运港为 CHINA PORTS，若信证禁止分批，则信用证中装运港CHINA PORTS的实际意义与 CHINA PORT相同

信用证规定起运港为 CHINA PORTS，若信证禁止分批，则信用证中装运港CHINA PORTS的实际意义与 CHINA PORT相同 A: 正确 B: 错误

中国大学MOOC: 信用证规定起运港为 CHINA PORTS，若信证禁止分批，则信用证中装运港CHINA PORTS的实际意义与 CHINA PORT相同

The correct choice is_______. A: Protecting the waterway from being damaged. B: Setting a limit to the numbers of tourists in Venice. C: Converting industrial ports into ports for tourists. D: Taking tourists to Venice by smaller boats or coaches.

电路原理图中元器件连接可以采用（）方法建立电气连接。 A: Place-wire B: Place-Net Label C: Place-Line D: Place-Ports E: Place-Text String