Which one of the following characteristics is true regarding the use of hubs and switches?（） [" Hubs can have their ports be configured with VLANs"," Using hubs is costly with regard to bandwidth availability."," Switches can not forward broadcasts."," Switches are more efficient than hubs in processing frames."," Switches increase the number of collision domains in the network."]
躁狂症与躁郁症。
Refer to the exhibit. Based upon the information in the exhibit, which statement is true?（） [" DHCP requests from the host will be rebroadcasted to R2."," To complete t his configuration, the R1 fa0\/0 interface must be configured with the ip helper - addresses command."," To complete this configuration, the R2 fa0\/0 interface must be configured with the ip helper -addresses command."," R1 will forward all DHCP requests t o both 192.168.100.1 and 192.168.200.1 as unicast messages."," R1 will forward DHCP requests to 192.168.100.1. If there is no response, R1 will then forward the requests to 192.168.200.1."]
工程保险当中，以下不是按保险标的划分的是（）。 ["A.建筑工程一切险 ","B.工程项目其他险 ","C.人员伤亡保险 ","D.财产损失保险"]
各类静物对光线的吸收和反射不同，可以分为（）。
简述《江水》一文的主要内容。
