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

A system has a critical need for network services on a small network with a limited number of hosts. System overhead is not a concern. Which of the following should the system administrator do to help ensure connectivity in the event of a gateway failure？（）

A.Use the ifconfig command to enable dead gate detection
B.Use the no command to set active dead gateway detection
C.Use the route command to set active dead gateway detection
D.Add the line active_dgd=1 to the /etc/gated.conf command and refresh the gated daemon

微信掃碼免費(fèi)搜題