試題1

在網(wǎng)絡(luò)中分配 IP 地址可以采用靜態(tài)地址或動態(tài)地址方案。下面關(guān)于兩種地址分配方案的 論述中錯誤的是（ ）。
A．采用動態(tài)地址分配方案可便面地址資源的浪費
B．路由器、交換機等聯(lián)網(wǎng)設(shè)備適合采用靜態(tài) IP 地址
C．各種服務(wù)器設(shè)備適合采用動態(tài) IP 地址分配方案
D．學生客戶機最好采用動態(tài) IP 地址

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試題2

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試題3

下面關(guān)于網(wǎng)絡(luò)工程需求分析的論述中，正確的是  （ ）  。
A、任何網(wǎng)絡(luò)都不可能是一個能夠滿足各項功能需求的萬能網(wǎng)
B、必須采用最先進的網(wǎng)絡(luò)設(shè)備，獲得最高的網(wǎng)絡(luò)性能
C、網(wǎng)絡(luò)需求分析獨立于應(yīng)用系統(tǒng)的需求分析
D、網(wǎng)絡(luò)需求分析時可以先不考慮系統(tǒng)的擴展性

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試題4

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試題5

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試題6

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試題7

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試題8

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試題9

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an （1 ） from a friend who asks you to open it. This is what happens with Melissa and several other similar email （2） . Upon running, such worms usually proceed to send themselves out to email addresses from the victim's address book, previous emails, web pages  （3） .
As administrators seek to block dangerous email attachments through the recognition of well-known （4） , virus writers use other extensions to circumvent such protection. Executable （.exe） files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.
Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the  （5） access to your network.
（1）A、attachment
B、packet
C、datagram
D、message
（2）A、virtual
B、virus
C、worms
D、bacteria
（3）A、memory
B、caches
C、ports
D、registers
（4）A、names
B、cookies
C、software
D、extensions
（5）A、cracker
B、user
C、customer
D、client

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試題10

在層次化局域網(wǎng)模型中，以下關(guān)于核心層的敘述，正確的是（） 。
A．為了保障安全性，對分組要進行有效性檢查
B．將分組從一個區(qū)域高速地轉(zhuǎn)發(fā)到另一個區(qū)域
C．由多臺二、三層交換機組成
D．提供多條路徑來緩解通信瓶頸

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