A network technician wants to use a packet analyzer to troubleshoot a reported problem with a user's workstation with IP address 192.168.1.45. To identify the workstation's packets the technician wants to use the workstation's 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?（）

A.Straight
B.Console
C.Crossover
D.Loopback

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?（）

A. IDF
B. 66 block
C. MDF
D. 110 block

单项选择题In which of the following layers of the OSI model does the TCP protocol operate?（）

A.Session
B.Network
C.Data link
D.Transport

单项选择题Which of the following ports does POP3 services use, by default?（）

A.25
B.110
C.143
D.443

单项选择题A user took a laptop on vacation and made changes to the configuration in order to use the device at the hotel. The user can reach the Internet, but cannot access any internal network resources. Which of the following is the MOST likely reason?（）

A. Incorrect DNS
B. Incorrect subnet mask
C. Duplicate IP address
D. Incorrect SSID