谁帮我看一下CCNA的这个题?后面的几个选项我不懂是什么意思呀!As a network administrator,you will need to decide on the appropriate networkdevices to use.Which of the following correctly describes the roles of devices in aWAN?(C
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![谁帮我看一下CCNA的这个题?后面的几个选项我不懂是什么意思呀!As a network administrator,you will need to decide on the appropriate networkdevices to use.Which of the following correctly describes the roles of devices in aWAN?(C](/uploads/image/z/10443231-63-1.jpg?t=%E8%B0%81%E5%B8%AE%E6%88%91%E7%9C%8B%E4%B8%80%E4%B8%8BCCNA%E7%9A%84%E8%BF%99%E4%B8%AA%E9%A2%98%3F%E5%90%8E%E9%9D%A2%E7%9A%84%E5%87%A0%E4%B8%AA%E9%80%89%E9%A1%B9%E6%88%91%E4%B8%8D%E6%87%82%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%E5%91%80%21As+a+network+administrator%2Cyou+will+need+to+decide+on+the+appropriate+networkdevices+to+use.Which+of+the+following+correctly+describes+the+roles+of+devices+in+aWAN%3F%28C)
谁帮我看一下CCNA的这个题?后面的几个选项我不懂是什么意思呀!As a network administrator,you will need to decide on the appropriate networkdevices to use.Which of the following correctly describes the roles of devices in aWAN?(C
谁帮我看一下CCNA的这个题?后面的几个选项我不懂是什么意思呀!
As a network administrator,you will need to decide on the appropriate network
devices to use.Which of the following correctly describes the roles of devices in a
WAN?(Choose three)
A.A CSU/DSU terminates a digital local loop.
B.A router is commonly considered a DCE device.
C.A modem terminates an analog local loop.
D.A router is commonly considered a DTE device.
E.A modem terminates a digital local loop.
F.A CSU/DSU terminates an analog local loop.
G.A modem is used to terminate a T1
谁帮我看一下CCNA的这个题?后面的几个选项我不懂是什么意思呀!As a network administrator,you will need to decide on the appropriate networkdevices to use.Which of the following correctly describes the roles of devices in aWAN?(C
作为一个网络管理员,你将需要决定使用适当的网络设备.以下关于WAN设备作用的描述中哪项是正确的?(选择三项)
A.WAN是一个终止本地数字环路的CSU/DSU
B.WAN是一个通常被认为是DEC服务器的路由程序
C.WAN是一个终止本地模拟环路的调制解调器
D.WAN是一个通常被认为是DTE服务器的路由程序
E.WAN是一个终止本地数字环路的调制解调器
F.WAN是一个终止本地模拟环路的CSU/DSU
G.WAN是一个用来终止T1的调制解调器
WAN:广域网.
CSU(通道服务单元):把终端用户和本地数字电话环路相连的数字接口设备.
DSU(数据业务单元):指的是用于数字传输中的一种设备.
DTE:数据终端设备
DCE:数据通信设备
T1:北美的24路脉码调制PCM简称T1,速率1.544Mbit/s,我国采用欧洲的E1标准.