試題1

假設(shè)現(xiàn)在要創(chuàng)建一個Web應(yīng)用框架，基于此框架能夠創(chuàng)建不同的具體Web應(yīng)用，比如博客、新聞網(wǎng)站和網(wǎng)上商店等;并可以為每個Web應(yīng)用創(chuàng)建不同的主題樣式，如淺色或深色等。這一業(yè)務(wù)需求的類圖設(shè)計(jì)適合采用()模式(如下圖所示)。其中()是客戶程序使用的主要接口，維護(hù)對主題類型的引用。此模式為()，體現(xiàn)的最主要的意圖是()。

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試題2

若一個具有n個結(jié)點(diǎn)、k條邊的非連通無向圖是一個森林(n>k)，則該森林中必有（ ）棵樹。
A、k 
B、n 
C、n-k 
D、n+k 

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試題3

下面關(guān)于在 I/O 設(shè)備與主機(jī)間交換數(shù)據(jù)的敘述，  （ ）  是錯誤的。
A、中斷方式下，CPU 需要執(zhí)行程序來實(shí)現(xiàn)數(shù)據(jù)傳送任務(wù)
B、中斷方式和 DMA 方式下，CPU 與 I/O 設(shè)備都可同步工作
C、中斷方式和 DMA 方式中，快速 I/O 設(shè)備更適合采用中斷方式傳遞數(shù)據(jù)
D、若同時接到 DMA 請求和中斷請求，CPU 優(yōu)先響應(yīng) DMA 請求

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試題4

以關(guān)鍵字比較為基礎(chǔ)的排序算法在最壞情況下的計(jì)算時間下界為O(nlogn)。下面的排序算法中，最壞情況下計(jì)算時間可以達(dá)到O(nlogn)的是（1）；該算法采用的設(shè)計(jì)方法是（2）。
（1）A、歸并排序 
B、插入排序 
C、選擇排序 
D、冒泡排序
（2）A、分治法 
B、貪心法 
C、動態(tài)規(guī)劃方法 
D、回溯法 

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試題5

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試題6

In a world where it seems we already have too much to do, and too many things to think about, it seems the last thing we need is something new that we have to learn.
But use cases do solve a problem with requirements: with （1 ） declarative requirements it's hard to describle steps and sequences of events.
Use cases, stated simply, allow description of sequences of events that, taken together, lead to a system doing something useful. As simple as this sounds, this is important. When confronted only with a pile of requiements, it's often（2 ）to make sense of what the authors of the  requirements really wanted the system to do. In the preceding example, use cases reduce the ambiguity of the requirements by specifying exactly when and under what conditions certain behavior occurs; as such, the sequence of the behaviors can be regarded as a requirement. Use cases are particularly well suited to capture approaches. Although this may sound simple, the fact is that (3 ) requirement capture approaches, with their emphasis on declarative requirements and "shall" statements, completely fail to capture fail to capture the (4 ) of the system's behavior. Use cases are a simple yet powerful way to express the behavior of the system in way that all stakeholders can easily understand.
But, like anything, use cases come with their own problems, and as useful as they are, they can be (5 ). The result is something that is as bad, if not worse, that the original problem. Therein it's important to utilize use cases effectively without creating a greater problem than the one you started with.
（1）A.plenty
B.loose
C.extra
D.strict
（2）A.impossible
B.possible
C.sensible
D.practical
（3）A.modern
B.conventional
C.different
D.formal
（4）A.statics
B.nature
C.dynamics
D.originals
（5）A.misapplied
B.applied
C.used
D.powerful

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試題7

彩色打印機(jī)中所采用的顏色空間是（ ）。
A、RGB彩色空間 
B、CMY彩色空間  
C、YUV彩色空間 
D、HSL彩色空問 

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試題8

若將某有序樹 T 轉(zhuǎn)換為二叉樹 T1，則 T 中結(jié)點(diǎn)的后（根）序序列就是 T1 中結(jié)點(diǎn)的  （ ）  遍歷序列。例如，下圖(a)所示的有序樹轉(zhuǎn)化為二叉樹后如圖(b)所示。

A、先序
B、中序
C、后序
D、層序

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試題9

某Web網(wǎng)站向CA申請了數(shù)字證書。用戶登錄該網(wǎng)站時，通過驗(yàn)證  （1）  ，可確認(rèn)該數(shù)字證書的有效性，從而 （2） 。
（1）A、CA的簽名
B、網(wǎng)站的簽名
C、會話密鑰
D、DES密碼
（2）A、向網(wǎng)站確認(rèn)自己的身份
B、獲取訪問網(wǎng)站的權(quán)限
C、和網(wǎng)站進(jìn)行雙向認(rèn)證
D、驗(yàn)證該網(wǎng)站的真?zhèn)?/p>

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試題10

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