ccna(200-120)中文版题库对照_图文.docx

CCNA（200-120）题库中英对照整理于：2015年3月31日版本：1.2QUESTION 001Refer to the exhibit. What will Router1 do when it receives the data frame shown? (Choose three.)参照下图，这个图示显示了Ｒ１接受到如图所示数据帧的时候会怎么做？Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965.Ｒ１会剥离源ＭＡＣ地址，以0000：0C36.6965代替。Router1 will strip off the source IP address and replace it with the IP address .Ｒ１会剥离源IP地址，以代替。Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320.Ｒ１会剥离源ＭＡＣ地址，以0000：0C36.6965代替。D. Router1 will strip off the destination IP address and replace it with the IP address of .Ｒ１会剥离目的IP地址，以代替。Router1 will forward the data packet out interface FastEthernet0/1.R1将会从F0/1转发这个数据包。Router1 will forward the data packet out interface FastEthernet0/2.R1将会从F0/2转发这个数据包数据传输过程中，IP地址不变，但是在不同的网段中，MAC地址要根据设备的具体情况而发生改变。在不同网络中，依靠IP地址定位，在同一网络中，依靠MAC地址定位。QUESTION 002Refer to the exhibit. Which three statements correctly describe Network Device A? (Choose three.)如图所示，关于网络设备 A哪三项是正确的描述？With a network wide mask of 28, each interface does not require an IP address.如果配置一个25位的网络号，每个端口不需要配置一个地址。With a network wide mask of 28, each interface does require an IP address on a unique IP subnet.如果配置一个25位的网络号，每个端口需要配置一个地址和子网。With a network wide mask of , must be a Layer 2 device for the PCs to communicate with each other.如果配置一个24位的网络号，成为一个二层设备以便让PC和其他设备通讯。With a network wide mask of , must be a Layer 3 device for the PCs to communicate with each other.如果配置一个24位的网络号，成为一个三层设备以便让PC和其他设备通讯。With a network wide mask of , each interface does not require an IP address.如果配置一个23位的网络号，每个端口不需要配置一个地址。QUESTION 003Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?在OSI参考模型当中，哪一层可以判断程序的可用性以机是否有足够的资源来支持这个通讯？A. transport 传输层B. network 网络层 C. presentation 表示层D. session 会话层E. application 应用层QUESTION 004Which of the following describes the r