[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f7U3GZlbsOuJ-bodWIa5mZ_baEaVedz_DIHunji5nefk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":24,"type":81},[],"2025-06-04 19:32:36",194166947,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},50,"06571a852bfa25d389736b1d15083e42","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9703336f5f7db63c95cacf618866ec84.jpg","操作系统(2025)","work_44034150","第9章 磁盘存储器管理 作业","在显式链接文件中是在每个盘块中设置一个链接指针,用于将文件的所有盘块都链接起来",[19,26,36,45,54,63,72,78,82,87],{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":24,"type":25},[],194166936,[],"假设某文件系统采用混合索引文件物理结构,各文件的文件控制块(或索引节点)包含10个直接地址项、1个一级间址项、1个二级间址项以及1个三级间址项.若磁盘盘块的大小是2KB,而磁盘盘块地址(即盘块号)占4B,则该文件系统支持的最大文件长度是多少","v1",4,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":35},[],194166938,[30,31,32,33],"虚拟盘是一种易失性存储器,因此它通常只用于存放临时文件","优化文件物理块的分布可显著地减少寻道时间,因此能有效地提高磁盘I\u002FO的速度","对随机访问的文件,可通过提前读提高对数据的访问速度","延迟写可减少启动磁盘的次数,因此能等效地提高磁盘I\u002FO的速度","从下面的论述中错误的论述是( )",0,{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":24,"type":35},[],194166940,[40,41,42,43],"内存","磁盘控制器","Cache","磁盘","磁盘高速缓存设在( )中",{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":24,"type":35},[],194166941,[49,50,51,52],"重排I\u002FO请求次序","在一个磁盘上设置多个分区","预读和滞后写","优化文件物理块的分布","下列选项中,不能改善磁盘设备I\u002FO性能的是( )",{"answer":55,"createTime":5,"id":56,"options":57,"question":62,"source":24,"type":35},[],194166942,[58,59,60,61],"仅Ⅰ、Ⅱ","仅Ⅱ、Ⅲ","仅Ⅰ、Ⅲ、Ⅳ","Ⅰ、Ⅱ、Ⅲ、Ⅳ","下列优化方法中,可以提高文件访问速度的是( ). Ⅰ.提前读 Ⅱ.为文件分配连续的簇 Ⅲ.延迟写 Ⅳ.采用磁盘高速缓存",{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":24,"type":35},[],194166943,[67,68,69,70],"廉价磁盘冗余阵列","磁盘容错技术","磁盘高速缓存","后备系统","下列方式中,( )不能改善磁盘系统的可靠性",{"answer":73,"createTime":5,"id":74,"options":75,"question":76,"source":24,"type":77},[],194166944,[],"使用位示图(30行,50列)表示空闲盘块状态.如当分配一个盘块号为174时,其在位示图中的行数为 ,列数为23.(注:行列始下标为0)",2,{"answer":79,"createTime":5,"id":6,"options":80,"question":17,"source":24,"type":81},[],[8,9],3,{"answer":83,"createTime":5,"id":84,"options":85,"question":86,"source":24,"type":81},[],194166950,[8,9],"顺序文件必须采用连续分配方式,而链接文件和索引文件则可采用离散分配方式",{"answer":88,"createTime":89,"id":90,"options":91,"question":92,"source":24,"type":81},[],"2025-06-04 19:32:37",194166953,[8,9],"对一个具有三级索引表的文件,存取一个记录通常需要3次访问磁盘"]