单项选择题 A company has implemented a wireless network for its employees. Since implementing the newnetwork， individuals have been receiving duplicate IP addresses causing network issues.  Which of the following would resolve this issue？ （）

单项选择题 The server room that an administrator manages has just caught fire. Which of the following is the FIRST thing that the administrator should do?（）

单项选择题 An administrator is creating a comprehensive backup system to backup a single web server.Which of the following is the BEST way to provide full restore?（）