[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQLukxVDXN4AsflV05NpoxRk-acJ9PTfLG_d0OuR0zSQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":22,"type":23},[],"2023-06-13 15:14:07",62146219,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},8,"f1ad6269de4b917642d252e7fc6d8a23","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c41aa19a7278d40ac87cc4dc6ed5b10.jpeg","操作系统","work_27132714","第三章简答题(22)","系统中有五个进程P1、P2、P3、P4、P5,有三种类型的资源:A、B、和C.在T0时刻系统状态如下表所示.现采用银行家算法避免死锁,请按要求回答下列问题 (1)计算每个进程的need向量 (2)T0时刻是否为安全状态?为什么? (3)若这时P4请求资源(1,2,0),是否能实施资源分配?为什么? T0时刻系统状态(如下表) \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F10faaa31838f5cd70c03fa580569eabc.png\">",[17,24,29,34,39,44,49,52],{"answer":18,"createTime":5,"id":19,"options":20,"question":21,"source":22,"type":23},[],62146213,[],"高级调度与低级调度的主要任务是什么?为什么要引入中级调度","v1",4,{"answer":25,"createTime":5,"id":26,"options":27,"question":28,"source":22,"type":23},[],62146214,[],"在什么情况下需要使用作业控制块JCB?其中包含了哪些内容",{"answer":30,"createTime":5,"id":31,"options":32,"question":33,"source":22,"type":23},[],62146215,[],"何谓静态和动态优先级?确定静态优先级的依据是什么",{"answer":35,"createTime":5,"id":36,"options":37,"question":38,"source":22,"type":23},[],62146216,[],"何谓死锁?产生死锁的原因和必要条件是什么",{"answer":40,"createTime":5,"id":41,"options":42,"question":43,"source":22,"type":23},[],62146217,[],"现有5个作业进程,进程名称,进程到达时间及服务时间如下表所示: \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0e78fb1f0b5cd5af7f6b34f69b499b29.png\">求:(1)计算FCFS调度算法中每个进程的完成时间、周转时间、带权周转时间 (2)计算时间片轮转法(RR)中每个进程的完成时间、周转时间、带权周转时间",{"answer":45,"createTime":5,"id":46,"options":47,"question":48,"source":22,"type":23},[],62146218,[],"现有4个作业进程,进程名称,进程到达时间及服务时间如下表所示,系统采用非抢占式调度: \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F647c8ceda51d2783896ca1ffddb1dfd0.png\">(1)计算FCFS调度算法中每个进程的完成时间、周转时间、带权周转时间 (2)计算SJF调度算法中每个进程的完成时间、周转时间、带权周转时间求",{"answer":50,"createTime":5,"id":6,"options":51,"question":15,"source":22,"type":23},[],[],{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":22,"type":23},[],62146220,[],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff33a3b6b90690c944fd10209b46cae7a.png\">"]