[多选题]In which Spanning-Tree states does a switch port learn MAC addresses? (Select two)
正确答案 :CD
Forwarding
Learning
解析:解析:Explanation:
[单选题]把访问权限表应用到路由器端口的命令是:()
正确答案 :B
ip access-group 101 out
[单选题]During the boot sequence, a Ezonexam 2800 series router needs to locate and load an operating system. What is the default order the router uses to find an operating system?
正确答案 :B
Flash, TFTP server, ROM
解析:解析:Explanation:BootinguptheRouter:CiscorouterscanbootCiscoIOSsoftwarefromtheselocations:1.Flashmemory2.TFTPserver3.ROM(notfullCiscoIOS)Multiplesourceoptionsprovideflexibilityandfallbackalternatives.
[单选题]下列路由协议中,属于链路状态路由协议的是()
正确答案 :D
OSPF
[单选题]OSI七层模型中,数据链路层的数据封装名称为()
正确答案 :B
帧
[单选题]A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?
正确答案 :C
172.16.208.0
解析:解析:Explanation:
[单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP和掩码结合,共划分了多少个子网(不包括全0子网和全1子网)()
正确答案 :B
30
[单选题]路由器上激活端口的命令是()
正确答案 :B
no shutdown
[单选题]路由器上,清空路由表的命令是()
正确答案 :D
clearip route*
[多选题]Why is full-duplex Ethernet superior to its single-duplex counterpart? (Select two answer choices.)
正确答案 :BD
It operates without collisions
It provides faster data transfer
解析:解析:Explanation:
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