单项选择题 Which of the following network devices should be installed at a data center to intelligently distribute client connections to a pool of servers?（）

单项选择题 Which of the following attacks occurs when a hijacker intercepts traffic, modifies it, then sends thetraffic?（）

单项选择题 Which of the following is the BEST network device to allow multiple network connections to beterminated in one spot?（）