[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fEWm4klmbl1ay9a9A7X-EdkUKDBRtpMH8pKRwpEa0Z2E":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2025-12-23 08:51:44",281917873,[8,9,10,11],"第二条 Server Map 作用是当 192.168.1.1 去访问任何地址的时候经过防火墙后源地址会转换成 1.1.1.1","第一条 Server Map 作用是任何地址去访问 192.168.1.1 时,经过防火墙后目的 IP 都转换成1.1.1.1","带有 Reverse 标识的 Server Map 可以使用命令将其册除","这两条 Server Map 表项是静态的,即配置好 NAT Server 后,两条 Server Map 会自动生成且永久存在",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","如图所示为配置 NAT Server 后生成的两条 Server Map 表项,关于该图所呈现的信息,以下哪项描述是错误的?[单选题]*Type: Nat Server. ANY→1.1.1.1[192.168.1.1]Type: Nat Server Reverse. 192.168.1.1[1.1.1.1] →ANY\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F01380143a68458b4cf47dd0037ce09eb.png\">",[18,29,32,41,50,59,68,77,86,95],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],281917872,[22,23,24,25],"a+1:a","a:a+1","b+1:b","a+1:a+1","如图所示,客户端A和服务器B之间建立TCP连接,图中两处"?"报文序号应该是下列哪项?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc330ef2f5be32d17f9c24484497a136a.png\">","v1",0,{"answer":30,"createTime":5,"id":6,"options":31,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":27,"type":28},[],281917874,[36,37,38,39],"rule name c. source-zone untrust. destination-zone trust. destination-address 202.106.1.132,action permit","rule name D, source- zone untrust. destination- zone trust. destination-address10.l0.1.1 32,action permit","rule name B, source- zone untrust, destination- zone trust, source-address10.10.1.1 32, actionpermit","rule name B, source- zone untrust, destination- zone trust, source-address202.106.l.1 32, actionpermit","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F18b3ed9d0287f066e1b6b918d536f15f.png\">",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":27,"type":28},[],281917875,[45,46,47,48],"接入用户","LNS","LAC","服务器","如图所示,使用 C1ient- Initiated VPN 方式建立 L2 TP VPN 时,下列哪项是 PPP 报文的终点?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2cda7e6984f9f31f6ea66e6bd6426b14.png\">",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":27,"type":28},[],281917876,[54,55,56,57],"2.2.2.2","1.1.1.1","10.1.1.2",".192.168.2.1","如图所示, FW_A 与 FW_B 之间建立 GRE VPN, PC_A 与 PC_B 通过 GRE VPN 访问, 请 问对数据报文封装时, 目的地址应封装为下列哪项?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0445a587dfef6994f576bed459502ee8.png\">",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":27,"type":28},[],281917877,[63,64,65,66],"1","2","3","4","如图所示,在传输模式中,AH Header 头部应该插入以下哪一顶位置?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb5ca5e1f58eb023f6c1ddcd6d3a5d59c.png\">",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":27,"type":28},[],281917878,[72,73,74,75],"向全网发送一个 ABP 广播,请求主机 C 的里 MAC 地址","向子网发送一个 ARP 广播,请求网关的 MAC 地址","查找主机 C 的路由表","向子网发送一个 ARP 广播.请求主机 C 的 MAC 地址","向全网发送一个 ABP 广播,请求主机 C 的里 MAC 地址.如图所示.主机 A 访问主机 C 时检查 ARP 表项中不存在目的地址的 MAC 地址表项,主机 A 通过以下哪种方式找到目的 MAC 地址?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9088bdbac25fd45ed0e845f13f462d6c.png\">",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":27,"type":28},[],281917879,[81,82,83,84],"PC1 到 PC2 的 TCP 连接已经完全关闭","PC1 到 PC2 的 TCP 连接处于半关闭状态,PC1 仍然能向 PC2 发送数据","PC1 到 PC2 的 TCP 连接处于半关闭状态,不能再通过此连接发送数据","PC1 到 PC2 的 TCP 连接处于半关闭状态,PC2 仍然能向 PC1 发送数据","如图所示,PC1 和 PC2 之间已经建立了 TCP 连接,PC1 发出对此连接的 FIN 请求,PC2 回应了 ACK,以下哪一项的描述是正确的?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff5d2a0e6c55a59d8ee67f53fbcdc2f43.png\">",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":27,"type":28},[],281917880,[90,91,92,93],"错误的模式","通用模式","传输模式","隧道模式","如图所示,以下哪一项是图示 IPSec VPN 的封装模式?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F61655dc505c530bde670006fe17f9bb3.png\">",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":27,"type":28},[],281917881,[99,100,101,102],"该终端向192.168.1.1发起了TCP连接终止请求","该终端使用Telnet登录其他设备","该终端向192.168.1.1发起了TCP连接建立请求","该终端使用Http登录其他设备","如图所示,使用抓包软件在某终端设备上抓取了部分报文,关于该报文信息,以下哪一项是正确的?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5d70bddafd669b89eb2add201669cfd3.png\">"]