試題1

下面可用于消息認(rèn)證的算法是（44） 。
A.DES    
B.PGP
C.MD5  
D.KMI

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試題2

程序的三種基本控制結(jié)構(gòu)是  （ ）  。
A、過程、子程序和分程序
B、順序、選擇和重復(fù)
C、遞歸、堆棧和隊列
D、調(diào)用、返回和跳轉(zhuǎn)

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試題3

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試題4

SNMP 采用 UDP 提供的數(shù)據(jù)報服務(wù)，這是由于（ ）。
A．UDP 比 TCP 更加可靠
B．UDP 報文可以比 TCP 報文大
C．UDP 是面向連接的傳輸方式
D．采用 UDP 實現(xiàn)網(wǎng)絡(luò)管理不會太多增加網(wǎng)絡(luò)負(fù)載

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試題5

Without proper safeguards, every part of a network is vulnerable to a security breach or unauthorized activity from （1）, competitors, or even employees. Many of the organizations that manage their own （2） network security and use the Internet for more than just sending/receiving e-mails experience a network （3）— and more than half of these companies do not even know they were attacked. Smaller （4） are often complacent, having gained a false sense of security. They usually react to the last virus or the most recent defacing of their website. But they are trapped in a situation where they do not have the necessary time and（5）to spend on security.
（1）A．intruders
B．terminals
C．hosts
D．users
（2）A．exterior
B．internal
C．centre
D．middle
（3）A．a(chǎn)ttack
B．collapse
C．breakdown
D．virus
（4）A．users
B．campuses
C．Companies
D．networks
（5）A．safeguards
B．businesses
C．experiences
D．Resources

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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

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試題10

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