Which of the following cable types has a MAXIMUM transmission speed of 10Mbps?（）
A、CAT6
B、CAT5
C、Single-mode fiber
D、CAT3
计算机打开U盘自动运行策略，杀毒软件就能自动查杀U盘病毒。
A、对
B、错
After a baseline check was completed it was noted that the network was working far below the level of the last baseline. Which of the following should the technician do NEXT to determine where the network problems are occurring?（）
A、Upgrade the firmware on all routers and switches
B、Reboot the entire network one device at a time
C、Conduct a network traffic analysis
D、Rerun the baseline to ensure the results were correct
选择性
工作人员在暂时离开办公台时，需要锁定计算机屏幕。
A、对
B、错
Click the Exhibit button. What is the output if the main（ ） method is run?（）
A、 4
B、 5
C、 8
D、 9
E、 Compilation fails.
F、 An exception is thrown at runtime.
G、 It is impossible to determine for certain.