[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f7rQvu5kN5js4H46gGCIjPkGeIyoD4DXNqJaVDwELsPw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2025-12-30 13:22:37",295342540,[8,9,10,11],"21","25","80","1028",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},39,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_49116438","17周练习","绝大多数WEB站点的请求使用哪个TCP端口?( )",[21,26,35,44,53,62,69,78,87,96],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],295342541,[30,31,32,33],"被动的","主动的","能够防止内部犯罪的","能够解决所有问题的","防火墙技术是一种( )网络系统安全措施",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":25},[],295342542,[39,40,41,42],"会话层","应用层","网络层","数据链路层","包过滤型防火墙工作在( )",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":24,"type":25},[],295342544,[48,49,50,51],"NAT","NAPT","Smart NAT","Easy IP","下列哪种NAT转换可以不创建地址池就可以完成地址转换()",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":24,"type":25},[],295342546,[57,58,59,60],"提高服务器的利用率","隐藏服务器的网络结构,使服务器更加安全","提高防火墙的性能","便于管理","防火墙对要保护的服务器作端映射的好处是()",{"answer":63,"createTime":5,"id":64,"options":65,"question":68,"source":24,"type":25},[],295342548,[66,41,42,67],"传输层","物理层","OSI 模型中,LLC 头数据封装在数据包的过程是在()",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":24,"type":25},[],295342550,[73,74,75,76],"TCP 50","UDP 50","TCP 5","UDP 5","在 IPSec 中,使用 IKE 建立通道时,使用的端号是()",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":24,"type":25},[],295342552,[82,83,84,85],"会话认证","客户认证","用户认证","以上都不是","目前在防火墙上提供了几种认证方法,其中防火墙设定可以访问内部网络资源的用户访问权限是:()",{"answer":88,"createTime":5,"id":89,"options":90,"question":95,"source":24,"type":25},[],295342554,[91,92,93,94],"假冒IP地址的侦测","网络地址转换技术","内容检查技术","基于地址的身份认证","小明的公司申请到5个公用IP地址,要使公司的200台主机都能联到互联网上,他需要防火墙的()功能",{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":24,"type":25},[],295342556,[100,101,102,103],"FTP使用21端口号","DNS使用53端口号","HTTP使用80端口号","SNMP使用69端口号","端口号用来区分不同的服务,端口号由IANA分配,下面错误的是()"]