单项选择题
A.The cordless phones are plugged into same outlet as the router
B.The cordless phones are 5.8Ghz which interferes with wireless
C.The cordless phones are 2.4Ghz which interferes with wireless
D.The cordless phones are plugged into the RJ-11 jack
单项选择题 A computer configured to use DHCP cannot locate a DHCP server. Automatic Private IP Address(APIPA) will assign which of the following addresse？（）
单项选择题 Which of the following is a valid IP address in the public addressing scheme?（）
单项选择题 On a Windows network, users are reporting that they cannot access any network resources. The users can ping the IP address and connect to the network resource using the IP address. Which of the following is the cause of the problem?（）