[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fXaNHN-vVSLJ3B9XiCgnZu27D4st-1btTsrWmBt4NM5k":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2023-05-10 18:27:33",4279781,[8,9,10,11],"分组交换技术中&quot;交换&quot;的概念源于电路交换技术","分组交换技术与电路交换技术一样,整个过程必须经过&quot;建立连接(占用通信资源)&rarr;通话(一直占用通信资源)&rarr;释放连接(归还通信资源)&quot;3个步骤","分组交换技术适合于计算机间的数据交换","分组交换提供面向连接的服务,是可靠的",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},4,"1dec75fc7ba79c8f8b63c193120e2b86","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F34876855add85c027493494c1699d173.png","计算机网络技术","3cee08ffab274b8aaa67fee778eac439","分组交换网的概念","下面关于分组交换说法正确的是( )",[21,26,35,42],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",1,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],4279782,[30,31,32,33],"适合传递计算机数据","交换双方可实时进行数据交换而不会存在任何延迟","在数据交换前需建立起一条从发端到收端的物理通路","在数据交换的全部时间内用户始终占用端到端的固定传输信道","电路交换的特点是( )",{"answer":36,"createTime":37,"id":38,"options":39,"question":40,"source":24,"type":41},[],"2025-10-15 19:37:16",4413793,[],"电路交换的整个过程必须经过&quot;建立连接(占用通信资源)&rarr;通话(一直占用通信资源)&rarr;释放连接(归还通信资源)&quot;3个步骤.经过这3个步骤进行的通信,我们称电路交换提供了( ),是可靠的",2,{"answer":43,"createTime":37,"id":44,"options":45,"question":46,"source":24,"type":41},[],4413794,[],"分组交换的概念最初是由巴兰(Baran)于( )年在美国兰德(Rand)公司的&quot;论分布式通信&quot;的研究报告中提出来的"]