单项选择题
A. Setup an ACL that allows and logs all IP traffic between the two computers
B. Configure a spanning tree to check for a loop
C. Setup a span port on the switch to watch for CRC errors
D. Connect both computers using a crossover cable
单项选择题 Which of the following is equipment provided by the telephone company that provides remotediagnostic and loopback services for subscriber lines?（）
单项选择题 Which of the following routing protocols runs over UDP and determines path based upon distancevectors?（）
单项选择题 Which of the following is a disadvantage of using the EIGRP protocol?（）