单项选择题
A.NAT B.Subnetting C.DHCP D.DNS
An administrator finds a phone line but does not know w...
单项选择题An administrator finds a phone line but does not know where the line goes or if it is active. Whichof the following can be used to test if it is active?（）
A. Butt set B. Punch down tool C. Cable teste D. Cable stripper
Which of the following devices would allow a technician...
单项选择题Which of the following devices would allow a technician using a packet sniffer to view all the dataon a network?（）
A.GBIC B.Hub C.Bridge D.Modem
A server keeps rebooting at various times throughout th...
单项选择题A server keeps rebooting at various times throughout the day. Which of the following tools wouldBEST help to diagnose this issue?（）
A. Multimeter B. Temperature monitor C. Cable tester D. Toner probe
