CCNA系列认证
多选题Which of the following describes the roles of devices in a WAN? (Choose three.)（）AA CSU/DSU terminates a digital local loop.BA modem terminates a digital local loop.CA CSU/DSU terminates an analog local loop.DA modem terminates an analog local loop.EA
题目
A CSU/DSU terminates a digital local loop.
A modem terminates a digital local loop.
A CSU/DSU terminates an analog local loop.
A modem terminates an analog local loop.
A router is commonly considered a DTE device.
A router is commonly considered a DCE device.
参考答案和解析
相似问题和答案
第1题：
A. Allows for higher brightness
B. More crosstalk
C. Sustains higher resolutions
D. Supports widescreen resolutions
第2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3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
A,C,D
第4题：
The network administrator must complete the connection between the RTA of the XYZ Company and the service provider. To accomplish this task, which two devices could be installed at the customer site to provide a connection through the local loop to the central office of the provider (Choose two.)（）。
- A、WAN switch
- B、PVC
- C、ATM switch
- D、multiplexer
- E、CSU/DSU
- F、modem
正确答案:E,F
第5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6题：
A. 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.
B. 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.
C. 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.
D. 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7题：
The network administrator must complete the connection between the RTA of the XYZ Company and the service provider. To accomplish this task, which two devices could be installed at the customer site to provide a connection through the local loop to the central office of the provider (Choose two.)（）。
A.WAN switch
B.PVC
C.ATM switch
D.multiplexer
E.CSU/DSU
F.modem
第8题：
A.It initiates both the PPP session and the tunnel.
B.It initiates the PPP session and terminates the tunnel.
C.It terminates the PPP session and initiates the tunnel.
D.It terminates the PPP session and terminates the tunnel.
第9题：
A.Set the encapsulation of the interface to HDLC
B.Place the CSU/DSU in local-loop mode
C.Enable local-loop mode on the DCE Frame Relay router
D.Verify that the encapsulation is set to Frame Relay
第10题：
When troubleshooting a Frame Relay connection, what is the first step when performing a loopback test?（）
- A、Set the encapsulation of the interface to HDLC
- B、Place the CSU/DSU in local-loop mode
- C、Enable local-loop mode on the DCE Frame Relay router
- D、Verify that the encapsulation is set to Frame Relay
正确答案:A