多项选择题
A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of the links
单项选择题 IntheimplementationofVLSMtechniquesonanetworkusingasingleClassCIPaddress,whichsubnetmaskisthemostefficientforpoint-to-pointseriallinks?（）
单项选择题 Whichroutingprotocolbydefaultusesbandwidthanddelayasmetrics?（）
多项选择题 AcompanyisinstallingIPphones.Thephonesandofficecomputersconnecttothesamedevice.Toensuremaximumthroughputforthephonedata,thecompanyneedstomakesurethatthephonetrafficisonadifferentnetworkfromthatoftheofficecomputerdatatraffic.Whatisthebestnetworkdevicetowhichtodirectlyconnectthephonesandcomputers,andwhattechnologyshouldbeimplementedonthisdevice?(Choosetwo.)（）