99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

Mike, a technician, is working on several workstations and needs to continuously investigatesystems so he knows when the workstations reboot. Which of the following commands could beused?()

A. ping -l 9999
B. tracert -d
C. ping -t
D. tracert -h 9999

微信掃碼免費(fèi)搜題