单项选择题 After a technician came out and installed a new wireless router, one of the wired workstations began having problems connecting to the file server. This is only an intermittent problem. Which of the following actions will the technician MOST likely perform to resolve this problem?（）

单项选择题 Which of the following connectors would be used if the EIA/TIA 568 scheme is followed?（）

单项选择题 A company is upgrading from DSL to a new T1. When the ISP sends a technician out, the technicianwill terminate the T1 at which of the following locations in the building?（）