单项选择题 A network technician wants to use a packet analyzer to troubleshoot a reported problem with a users workstation with IP address 192.168.1.45. To identify the workstations packets the technician wants to use the workstations MAC address. Which of the following protocols would provide the needed information?（）

单项选择题 A technician needs to manage a switch by using the management port on the back of the switch.Which of the following cables would the technician use?（）

单项选择题 Which of the following would MOST likely be used to punch down LAN cables before connecting them to the main switch?（）