Which of the following protocols would a multilayer switch use to learn the IP address of a directly connected device？（）

Whichofthefollowingisthedefaultportfortelnet？（）A.20B.21...

单项选择题Which of the following is the default port for telnet？（）

Given the following routing table entries， which of the...

单项选择题

Given the following routing table entries， which of the following will the next-hop address be for a packet destined for the address 192.168.1.203？（）

WhichofthefollowingareformsofgigabitEthernetthatrequire...

多项选择题Which of the following are forms of gigabit Ethernet that require the use of fiber optic cables？（）