思科认证 2021_10_06 每日一练
You have a network that supports VLSM and you need to reduce IP address waste in your point to point WAN links. Which of the masks below would you use?
A. /38
B. /30
C. /27
D. /23
E. /18
F. /32
对于使用链路状态路由协议的路由器如何选择最佳路线到达子网，下列哪项是正确的（）
A.路由器会发现链路状态数据库中的最佳路由
B.通过针对链路状态数据库中的信息运行SPF算法，路由器会计算出最佳路由
C.路由器将比较每个邻居接收到的更新中为子网列出的标准，并挑选最佳标准路由
D.路由器会使用具有最低条数的路径
Which VTP mode should a Cisco switch be set to if this switch is to add or delete VLANs to a management domain?
A．Transparent
B．Server
C．Auto
D．Client
E．User
During startup, router VE1 displays the following error message:
boot: cannot open "flash:"
What will VE1 do next?
A. It will attempt to locate the configuration file from a TFTP server. If this fails, it will initiate the setup dialog.
B. It will attempt to locate the IOS from a TFTP server. If this fails, it will load a limited IOS from ROM.
C. It will attempt to locate the configuration file from a TFTP server. If this fails, it will load a limited configuration from ROM.
D. Because of damaged flash memory, the router will fail the POST.
E. It will attempt to locate the IOS from a TFTP server. If this fails, it will initiate the setup dialog.
F. None of the above
A Ezonexam technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.
In which OSI layer is the problem most likely occurring?
A．Physical
B．Data link
C．Network layer
D．Transport layer
E．Application layer
Which one of the following protocols allows the information about the configuration of a new VLAN to be distributed across entire switched network?
A. STP
B. VTP
C. EIGRP
D. SNMP
E. CDP
F. None of the above
A.Switch(config)#spanning-tree mode rapid-pvst
B.Switch#spanning-tree mode rapid-pvst
C.Switch(config)#spanning-tree mode 802.1w
D.Switch#spanning-tree mode 802.1w