[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]地址转换NAT的优点是()

正确答案 ：B

地址转换可以缓解地地址短缺的问题

[单选题]标准访问控制列表的数字标识范围是（）。

正确答案 ：B

1-99

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