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A.The PC has connectivity with a local host.B.The PC has connectivity with a Layer 3 device.C.The PC has a default gateway correctly configured.D.The
A.端口正常B.连接故障,路由器未接到LAN上C.接口故障D.接口被人为地关闭
A.物理链路有问题B.接口被管理员shutdown了C.参数配置不正确D.没大问题,重启路由器就行了
The word "hence" in line 10 means______.A. alwaysB. oftenC. thereforeD. seldom
The word ‘work’in the second line of the last paragraph most probably means.A.what a student has written at schoolB.what a student has learned at sch