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Which of the following WAN techn

题目

Which of the following WAN technologies has the GREATEST latency and is not recommended for VoIP?（）

  • A、ISDN
  • B、DSL
  • C、Satellite
  • D、Cable
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相似问题和答案

第1题：

Which of the following WAN protocols is a circuit switching technology?()

A. ISDN

B. SONET

C. Frame Relay

D. ATM


参考答案：A

第2题：

Which WAN protocol is used for out－of－band signaling?()

A.NCP

B.HDLC

C.LAPB

D.LAPD


参考答案：D

第3题：

Which of the following commands would be applied to a WAN interface, but not on LAN Interface? (Choose all that apply)

A. IP address

B. encapsulation PPP

C. no shutdown

D. authentication CHAP

E. Speed

F. None of the above


正确答案：BD
B,D 解析：Explanation:
PPP encapsulation can be used in ISDN interfaces, Asynchronous serial interfaces, and point to point serial WAN connections. PPP is not an option for LAN interfaces. CHAP authentication is a PPP 3 way authentication method. CHAP authentication can only be used on PPP encapsulated interfaces and is not a LAN interface configuration option.

Incorrect Answers:
A, C. This command can be applied to both LAN and WAN interface types.

E. The speed command is used on LAN interfaces, and is not used on WAN interface types.

第4题：

WAN data link encapsulation types include which of the following?（）

  • A、T1
  • B、Frame Relay
  • C、DSL
  • D、PPP
  • E、ISDN
  • F、IPX

正确答案:B,D

第5题：

TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology.Which of the following WAN technologies will fulfill these requirements?（）

A. Frame Relay

B. ISDN

C. T1 leased lines

D. Wireless


参考答案：A

第6题：

Which of the following WAN protocols is a packet switching technology?()

A.Frame Relay

B.POTS

C.PSTN

D.ISDN


参考答案：A

第7题：

WAN data link encapsulation types include which of the following?()

A. T1

B. Frame Relay

C. DSL

D. PPP

E. ISDN

F. IPX


参考答案：B, D

第8题：

Which of the following WAN technologies has the GREATEST latency and is not recommended for VoIP?()

A. ISDN

B. DSL

C. Satellite

D. Cable


参考答案：C

第9题：

Which of the following describes the roles of devices in a WAN? ()

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


参考答案：A, D, E

第10题：

Which of the following describes the roles of devices in a WAN?（）

  • 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 consideredaDTEdevice
  • F、A router is commonly considereda DCE device

正确答案:A,D,E

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