站点通过封禁UA或封禁IP的方式拒绝百度蜘蛛多长时间以上会造成严重的后果？

A.网站层次结构明了，并尽量保证spider的可读性

B. url尽量短且易读使得用户能够快速理解

C. 建立网站sitemap文件，前及时通过百度站长平台提交

D. robots文件是封禁搜索引擎抓取，所以此Robots文件尽量少用

A) Router(config)#access-list 110 permit icmp 212.78.170.166 0.0.0.0 any

Router(config)#access-list 110 deny icmp any any

Router(config)#access-list 110 permit ip any any

B) Router(config)#access-list 110 permit icmp 212.78.170.0 255.255.255.224 any

Router(config)#access-list 110 permit ip any any

Router(config)#access-list 110 deny icmp any any

C) Router(config)#access-list 110 perimt iemp 212.78.170.0 0.0.0.255 any

Router(config)#access-list 110 deny icmp any any

Router(config)#access-list 110 permit ip any any

D) Router(config)#access-list 110 permit icmp 212.78.170.160 0.0.0.31 any

Router(config)#access-list 110 deny icmp any any

Router(config)#access-list 110 permit ip any any

A．access-list 90 deny icmp l68．27．95．0 255．255．255．0 any access-list 90 deny icmp any anyaccess—list 90 permit ip any any

B．access-list l00 permit icmp l68．27．95．0 0．0．0．255 any access-list l00 permit ip any any

C．access—list l l o permit icmp l68．27．95．0 255．255．255．0 any access—list l lo deny icmp any any

D．access-list l20 permit icmp l68．27．95．0 0．0．0．255 any access—list l20 deny icmp any any access—list l20 permit ip any any

A.提供阻断API

B.日志收集

C.发现APT

D.IP封禁

E.采集流量分析

F.发现网络攻击

只封禁一台IP地址为203.168.47.59主机的access-list的正确配置是(41) 。

A．access-list 110permit ip any any access-list 110deny ip host 203.168.47.59 any access-list 110deny ip any host 203.168.47.59

B．access-list 110deny ip host 203.168.47.59any access-list 110deny ip any host 203.168.47.59 access-list 110permit ip any any

C．access-list 110deny ip host 203.168.47.59 any access-list 110deny ip any host 203.168.47.59

D．access-list 110deny ip host 203.168.47.59 any access-list 110permit ip any any access-list 110deny ip any host 203.168.47.59

只封禁一台地址为193．62．40．230主机的access-1ist的正确配置是（）。

A.acess-list 110permit ip any anyaccess-list 110 deny ip host 193．62．40．230 anyaccess-list 110 deny ip any host 193．62．40．230

B.access-list 110 deny ip host 193．62．40．230anyaccess-list110 deny ip any host 193．62．40．230access-list 110 permit ip any any

C.access-list 110 deny ip host 193．62．40．230 anyaccess-list110 deny ip any host 193．62．40．230

D.access-list 110 deny ip host 193．62．40．230 anyaccess-fist 110permit ip any anyaccess-list 110 deny ip any host 193．62．40．230

A．access-list 120 deny icmp 159.67.183.0 0.0.0.255 any access-list 120 permit ip any any

B．access-list 10 permit icmp 159.67.183.0 0.0.0.255 any access-list 10 deny icmp any any access-list 10 permit ip any any

C．access-list 99 permit icmp 159.67.183.0 0.0.0.255 any access-list 99 deny icmp any any

D．access-list 110 permit icmp 159.67.183.0 0.0.0.255 any access-list 110 deny icmp any any access-list 110 permit ip any any

A.是否存在网络层阻断

B.是否存在单边流量

C.是否对该IP进行了封禁

D.查看阻断日志，确认是否误报

只封禁一台地址为193.62.40.230主机的access-list的正确配置是

A．access-list 110 permit ip any any access-list 110 deny ip host 193.62.40.230 any access-list 110 deny ip any host 193.62.40.230

B．access-list 110 deny ip host 193.62.40.230any access-list 110 deny ip any host 193.62.40.230 access-list 110 permit ip any any

C．access-list 110 deny ip host 193.62.40.230 any access-list 110 deny ip any host 193.62.40.230

D．access-list 110 deny ip host 193.62.40.230 any access-list 110 permit ip any any access-list 110 deny ip any host 193.62.40.230