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单选题A metro Ethernet user is connected using a PPP over Ethernet service.How many Layer 2 headers are attached to each IP datagram?（）A 1B 2C 3D 4

题目
单选题
A metro Ethernet user is connected using a PPP over Ethernet service.How many Layer 2 headers are attached to each IP datagram?（）
A

1

B

2

C

3

D

4

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相似问题和答案

第1题：

A metro Ethernet user is connected using a PPP over Ethernet service.How many Layer 2 headers are attached to each IP datagram?()

A.1

B.2

C.3

D.4


参考答案：B

第2题：

Which two B－RAS service offerings do not require user authentication?()

A.Routed 1483

B.Bridged 1483

C.PPP over ATM

D.PPP over Ethernet


参考答案：A, B

第3题：

The ERX Edge Router is configured for PPP over Ethernet without using VLAN tagging. How many PPP over Ethernet major interfaces can be configured per port?()

A.1

B.100

C.2048

D.4096


参考答案：A

第4题：

A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）

  • A、Two switch ports will be needed on a switch,two Ethernet cables will be needed for theserver each connecting to two different Ethernet cards,and one IP address will be needed
  • B、Two switch ports will be needed on two different switches two Ethernet cables will beneeded for the server each connecting to two different Ethernet cards,and one IP address will be needed
  • C、Two switch ports will be needed on two different switches,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,two different IP addresses will be needed
  • D、One switch port will be needed on one switch,a splitter will be needed to split the connection,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,and two different IP addresses will be needed

正确答案:B

第5题：

Which two of these are characteristics of Metro Ethernet? ()

A. class of service

B. bandwidth profiles

C. user-network interface

D. Ethernet LAN circuit attributes

E. Ethernet virtual circuit attributes


参考答案：C, E

第6题：

A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?()

A.DSLAM

B.DSL modem

C.ERX Edge Router

D.customer workstation


参考答案：C

第7题：

What is the purpose of configuring the router as a PPPoE client?()

A. to provide VPN access over L2TP

B. to enable PPP session from the router to the termination device at the headend for metro Ethernet connectivity

C. for DSL connectivity and removing the need for the end - user PC to ru n the PPPoE client software

D. for connecting the router to a cable modem, which bridges the Ethernet frames from the router to the cable modem termination system


参考答案：C

第8题：

A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?()

A.DSLAM

B.DSL modem

C.ERX Edge Router

D.customer workstation


参考答案：B

第9题：

What is the purpose of configuring the router as a PPPoE client?（）

  • A、to provide VPN access over L2TP
  • B、to enable PPP session from the router to the termination device at the headend for metro Ethernet connectivity
  • C、for DSL connectivity and removing the need for the end - user PC to ru n the PPPoE client software
  • D、for connecting the router to a cable modem, which bridges the Ethernet frames from the router to the cable modem termination system

正确答案:C

第10题：

Which two B-RAS service offerings do not require user authentication?（）

  • A、Routed 1483
  • B、Bridged 1483
  • C、PPP over ATM
  • D、PPP over Ethernet

正确答案:A,B

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