正确答案: ABC
PC 网管机 WEB服务器
题目:下列哪一设备工作时,要用到OSI的七个层(一层到七层)()
解析:ABC
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学习资料的答案和解析:
[单选题]Cisco IOS命令ip nat inside source static 10.1.1.5 172.35.16.5的作用是什么()
为内部本地地址和内部全局地址创建一对一的映射关系
[单选题]SMTP工作在OSI哪一层()
应用层
[单选题]为了查看路由器的E0端口上,是否挂接了访问权限表,应该使用的命令是()
show interface e0
[单选题]下列对RIP的配置中,合法的命令是()
router rip network 10.12.0.0
[单选题]如果网络中的路由器都是cisco路由器,则优先选择哪一个路由协议()
EIGRP
[多选题]网络中经常使用“帧中继”服务,请选出帧中继的优点()
偷占带宽
提供拥塞管理机制
灵活的接入方式
解析:ABD
[单选题]At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?
Data link
解析:解析:Explanation:
[单选题]What kind of cable should be used to establish a trunked line between two Catalyst switches?
A cross-over cable
解析:解析:Explanation: A crossover cable is used to connect two of the same device types, or devices from the same OSI layer.
[单选题]The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?
1 network with 254 hosts
解析:解析:Explanation:Asubnetwith24bitsonwouldbe255.255.255.0.SincethisisaclassCnetwork,thissubnetcanhaveonly1networkand254usablehosts.