[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fvIl_sgtQUVDY3Uw0bKEdb4tkQq7ed2wNp3O1FiMjAZ0":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",281917880,[8,9,10,11],"错误的模式","通用模式","传输模式","隧道模式",{"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,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\">",[18,29,38,47,56,65,74,83,92,95],{"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":31,"options":32,"question":37,"source":27,"type":28},[],281917873,[33,34,35,36],"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","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\">",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],281917874,[42,43,44,45],"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":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],281917875,[51,52,53,54],"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":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],281917876,[60,61,62,63],"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":66,"createTime":5,"id":67,"options":68,"question":73,"source":27,"type":28},[],281917877,[69,70,71,72],"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":75,"createTime":5,"id":76,"options":77,"question":82,"source":27,"type":28},[],281917878,[78,79,80,81],"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":84,"createTime":5,"id":85,"options":86,"question":91,"source":27,"type":28},[],281917879,[87,88,89,90],"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":93,"createTime":5,"id":6,"options":94,"question":16,"source":27,"type":28},[],[8,9,10,11],{"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\">"]