[单选题]OSI七层模型中,物理层的数据封装名称为()
正确答案 :A
比特
[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]在路由表中到达同一网络的路由有:静态路由、RIP路由、IGRP路由,OSPF路由,则路由器会选用哪条路由传输数据:()
正确答案 :A
静态路由
[单选题]当在一个接口上使用ipaccess-group99in命令时,以下哪条关于所引用访问控制列表的描述是正确的()
正确答案 :C
这个列表是编号型标准ACL,检查进入接口的数据包
[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?
正确答案 :A
1 network with 254 hosts
解析:解析:Explanation:Asubnetwith24bitsonwouldbe255.255.255.0.SincethisisaclassCnetwork,thissubnetcanhaveonly1networkand254usablehosts.
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