試題1

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試題2

某web網(wǎng)站向CA申請了數(shù)字證書。用戶登錄該網(wǎng)站時，通過驗證  （1）  ，可確認該數(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)站確認自己的身份
B、獲取訪問網(wǎng)站的權限
C、和網(wǎng)站進行雙向認證
D、驗證該網(wǎng)站的真?zhèn)?/p>

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試題3

瀏覽器與Web服務器通過建立  （ ）  連接來傳送網(wǎng)頁。
A、UDP
B、TCP
C、IP
D、RIP

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試題4

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5

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試題6

為了確定一個網(wǎng)絡是否可以連通，主機應該發(fā)送ICMP  ( )  報文。
A、回聲請求
B、路由重定向
C、時間戳請求
D、地址掩碼請求

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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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