单项选择题 A user is unable to access the company website on a laptop. A network technician verifies that theuser can access other Internet pages. According to network troubleshooting methodology, which of the following steps should be taken NEXT?（）

单项选择题 Which of the following would provide a technician with a performance reference point to refer backto after hardware repair?（）

单项选择题 The network technician is troubleshooting a network issue by implementing a new security device.After installing and configuring the device, which of the following steps should the technician takeNEXT?（）