試題1

At a basic level, cloud computing is simply a means of delivering IT resources as （1）. Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking, programming tools, even communication services and collaboration （2）. Cloud computing began as large-scale Internet service providers such as Google, Amazon, and others built out their infrastructure. An architecture emerged: massively scaled, （3）distributed system resources, abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on （4）"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 towithstand failures of （5）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 servics can be continuous. What's more, clouds expand the types of resources available——file storage, databases, and Web services——and extend the applicability to Web and enterprise applications.
（1）A. hardware
B. computers
C. services
D. software
（2） A. computers
B. disks
C. machines
D. tools
（3） A. horizontally
B. vertically
C. inclined
D. decreasingly
（4） A. clients
B. middleware
C. servers
D. hard disks
（5） A. entire
B. individual
C. general
D. separate

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試題2

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試題3

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試題4

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試題5

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試題6

試題7

若某個關(guān)系的主碼為全碼，則該主碼應(yīng)包含 （ ） 。
A、單個屬性
B、兩個屬性
C、多個屬性
D、全部屬性

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試題8

多媒體中的“媒體”有兩重含義，一是指存儲信息的實體；二是指表達與傳遞信息的載體。（ ）是存儲信息的實體。
A、文字、圖形、磁帶、半導(dǎo)體存儲器
B、磁盤、光盤、磁帶、半導(dǎo)體存儲器
C、文字、圖形、圖像、聲音
D、聲卡、磁帶、半導(dǎo)體存儲器

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試題9

某企業(yè)生產(chǎn)流水線M共有兩位生產(chǎn)者，生產(chǎn)者甲不斷地將其工序上加工的半成品放入半成品箱，生產(chǎn)者乙從半成品箱取出繼續(xù)加工。假設(shè)半成品箱可存放n件半成品，采用PV操作實現(xiàn)生產(chǎn)者甲和生產(chǎn)者乙的同步可以設(shè)置三個信號量S、S1和S2，其同步模型如下圖所示。

信號量S是一個互斥信號量，初值為  （1）；S1、S2的初值分別為  （2）。
（1）
A．0
B．1
C．n
D．任意正整數(shù)
（2） A．n、0
B．0、n
C．1、n
D．n、1

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試題10

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