[单选题]以下特殊区域中哪一个没有自动下发缺省路由()
正确答案 :D
完全NSSA区域
[单选题]哪个命令可以成功测试网络:()
正确答案 :B
Routerping192.5.5.30
[单选题]配置路由器特权用户“加密密码”的命令是:()
正确答案 :C
enable secret
[单选题]默认情况下,RIP定期发送路由更新的时间是()
正确答案 :B
30S
[单选题]Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?
正确答案 :D
255.255.254.0.
解析:解析:Explanation:Toobtain459hoststhenumberofhostbitswillbe9.Thiscansupportamaximumof510hosts.Tokeep9bitsforhostsmeansthelastbitinthe3rdoctetwillbe0.Thisgives255.255.254.0asthesubnetmask.
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