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試卷年份2018年下半年
試題題型【單選題】
試題內(nèi)容

以下關(guān)于TCP/IP協(xié)議和層次對應(yīng)關(guān)系的表示中,正確的是()。
A.
B.
C.
D.

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62題: 在一條筆直公路的一邊有許多房子,現(xiàn)要安裝消防栓,每個消防栓的覆蓋范圍遠(yuǎn)大于房子的面積,如下圖所示?,F(xiàn)求解能覆蓋所有房子的最少消防栓數(shù)和安裝方案(問題求解過程中,可將房子和消防栓均視為直線上的點)。
該問題求解算法的基本思路為:從左端的第一棟房子開始,在其右側(cè)m米處安裝一個消防栓,去掉被該消防栓覆蓋的所有房子。在剩余的房子中重復(fù)上述操作,直到所有房子被覆蓋。算法采用的設(shè)計策略為(請作答此空);對應(yīng)的時間復(fù)雜度為( )。

假設(shè)公路起點A的坐標(biāo)為0,消防栓的覆蓋范圍(半徑)為20米,10棟房子的坐標(biāo)為(10,20,,30,35,60,80,160,210,260,300),單位為米。根據(jù)上述算法,共需要安裝( )個消防栓。以下關(guān)于該求解算法的敘述中,正確的是( )。
(1) A.分治
B.動態(tài)規(guī)劃
C.貪心
D.回溯
(2)A.Θ(lgn)
B.Θ(n)
C.Θ(nlgn)
D.Θ(n2)
(3) A.4
B.5
C.6
D.7
(4)A.肯定可以求得問題的一個最優(yōu)解
B.可以求得問題的所有最優(yōu)解
C.對有些實例,可能得不到最優(yōu)解
D.只能得到近似最優(yōu)解

答案解析與討論:www.yifanwine.com/st/407522687.html

66題: 使用ADSL接入Internet,用戶端需要安裝( )協(xié)議。
A.PPP
B.SLIP
C.PPTP
D.PPPoE
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67題: 下列命令中,不能用于診斷DNS故障的是( )。
A.netstat
B.nslookup
C.ping
D.tracert
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69題: 把CSS樣式表與HTML網(wǎng)頁關(guān)聯(lián),不正確的方法是( )。
A.在HTML文檔的<head>標(biāo)簽內(nèi)定義CSS樣式
B.用@import引入樣式表文件
C.在HTML文檔的<!--   -->標(biāo)簽內(nèi)定義CSS樣式
D.用<link>標(biāo)簽鏈接網(wǎng)上可訪問的CSS樣式表文件
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70題: 使用( )命令可以釋放當(dāng)前主機自動獲取的IP地址。
A.ipconfig/all
B.ipconfig/reload
C.ipconfig/release
D.ipconfig/reset
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71題: The project workbook is not so much a separate document as it is a structure imposed on the documents that the project will be producing anyway.
All the documents of the project need to be part of this (請作答此空). This includes objectives ,external specifications , interface specifications , technical standards , internal specifications and administrative memoranda(備忘錄).
Technical prose is almost immortal. If one examines the genealogy ( Ff ) of a customer manual for a piece of hardware or software , one can trace not only the ideas , but also many of the very sentences and paragraphs back to the first ( ) proposing the product or explaining the first design. For the technical writer, the paste-pot is as mighty as the pen.
Since this is so, and since tomorrow's product-quality manuals will grow from today’s memos, it is very important to get the structure of the documentation right. The early design of the project ( ) ensures that the documentation structure itself is crafted, not haphazard. Moreover, the establishment of a structure molds later writing into segments that fit into that structure.
The second reason for the project workbook is control of the distribution of ( ). The problem is not to restrict information, but to ensure that relevant information gets to all the people who need it.
The first step is to number all memoranda, so that ordered lists of titles are available and h worker can see if he has what he wants. The organization of the workbook goes well beyond this to establish a tree-structure of memoranda. The ( ) allows distribution lists to be maintained by subtree, if that is desirable.
A.structure
B.specification
C.standard
D.objective
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