A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line
A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line
A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line
A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line
第1题：
A.Transceiver
B.GatewayModem
C.Router
D.CSU/DSU
第2题：
第3题：
The real difference between plants and animals ____ what they do, and not in what they seem to be.
A: lies in
B: lies with
C: lies down
D: lies up
第4题：
What does the command show | compare rollback 1 display?（）
第5题：
Which of the following describes the roles of devices in a WAN?（）
第6题：
A.A CSU/DSU terminates a digital local loop
B.A modem terminates a digital local loop
C.A CSU/DSU terminates an analog local loop
D.A modem terminates an analog local loop
E.A router is commonly considered a DTE device
F.A router is commonly considered a DCE device
第7题：
what is the difference between the HSRP and VRRP？
第8题：
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
第9题：
路由器出现Serial interface-number is up，line protocol is down（DTE）的状态，可能出现的问题不包括（）。
第10题：
Which of the following describes the roles of devices in a WAN (Choose three.)（）。