A.CLOSE
B.RETURNS
C.RETURN
D.QUIT
第1题
ost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking,programming tools,even communication services and collaboration (72)。
Cloud computing began as large-scale Internet service providers such as Google,Amazon,and others built out their infrastructure. An architecture emerged: massively scaled, (73) distributed system resources,abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on (74)“somewhere on the Intemet”and the application runs on both the "cloud servers”and the user’s browser.
Both clouds and grids are built to scale horizontally very efficiently. Both are built to
withstand failures of (75) elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud services can be continuous. What’s more, clouds expand the types ofresources available —— file storage, databases, and Web services —— and extend the applicability to Web and enterprise applications.
(71)
A. hardware
B. computers
C. services
D. software
第4题
(74)
A. clients
B. middleware
C. servers
D. hard disks
第5题
分布式事务故障不同于集中式事务故障的是(59)。
A.介质故障
B.系统故障
C.事务故障
D.通信故障
第7题
(73)
A. horizontally
B. vertically
C. inclined
D. decreasingly
第8题
对于事务故障的恢复,下列描述正确的是(70)。
A.事务故障的恢复不需要访问日志文件
B.事务故障恢复时需要REDO已提交的事务
C.事务故障恢复时需要正向扫描日志,对该事务进行UNDO操作
D.事务故障恢复时需要反向扫描日志,对该事务进行UNDO操作
第9题
模块A直接访问模块B的内部数据,则模块A和模块B的耦合类型为 (67)。
A.数据耦合
B.标记耦合
C.公共耦合
D.内容耦合
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