Hurricanes, flooding, droughts, forest fires and other disasters occur more frequently than those in the past.

A . ballast control alarms B . excessive draft C . excessive list or trim D . a continual worsening of list or trim

A . first B . following control of fire C . following restoration of vital services D . only if a threat exist

A . Clockwise and outward B . Counterclockwise and inward C . Counterclockwise and outward D . Clockwise and inward

A . poor-struck B . poverty-struck C . poverty-stricken D . poor-stricke

A . 网络接口层 B . 互联网络层 C . 传输层 D . 应用层

A . ICMP Flood B . IP Flood C . SYN Flood D . UDP Flood E . ARP Flood F . Frag Flood

A . A.我有关于水舱的结构图表 B . B.由于货物移动我船严重纵倾 C . C.由于货物移动我船严重横倾 D . D.由于进水我船严重横倾

A . 每个座椅头顶 B . 侧壁板 C . AIRSHOW屏幕上方 D . 以上都不是

A . West or northwest B . Northeast C . Southeast D . North

A . The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device. B . Frames with unique， invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports. C . The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device. D . The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device. E . The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device. F . Frames with unique， invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports. G . None of the other alternatives apply

A . A、碰撞 B . B、搁浅 C . C、进水 D . D、爆炸

A . vaporizes in the condenser B . reaches the compressor through the suction line C . flashes in the liquid line D . condenses in the receiver

A . enable B . ip C . zone D . blacklist E . max‐rate F . tcp‐proxy

A . A、大量连接处于SYN_RCVD状态 B . B、正常网络访问受阻 C . C、系统资源使用率高

A . 出域的，Frag，入域的 B . 入域的，ARP，入域的 C . 出域的，ICMP，入域的 D . 入域的，ICMP，出域的

A . Place unused ports in a common VLAN. B . Implement private VLANs. C . Implement DHCP snooping. D . Implement port security. E . Implement VLAN access maps.

A．购买不同运营商的带宽 B．将你的服务下线 C．应用防火墙设置 D．找安全供应商购买最新的安全软件

A．洪水，水灾 B．地板，地面 C．淹没，泛滥

A．增强模式是指使用验证码认证的方式 B．有些僵尸工具具有重定向功能，或者攻击过程中使用的免费代理支持重定向功能，导致基本模式的防御失效，增强模式可以有效防御 C．增强模式在用户体验上优于基本模式 D．增强模式支持所有HTTP Flood源认证场景