第67題： Oracle數(shù)據(jù)庫(kù)提供認(rèn)證、訪問(wèn)控制、特權(quán)管理、透明加密等多種安全機(jī)制和技術(shù)。以下關(guān)于Oracle數(shù)據(jù)庫(kù)表述，錯(cuò)誤的是（    ）。
A．Oracle數(shù)據(jù)庫(kù)的認(rèn)證方式采用“用戶名＋口令”的方式
B．Oracle數(shù)據(jù)庫(kù)不支持三方認(rèn)證
C．Oracle數(shù)據(jù)庫(kù)具有口令加密和復(fù)雜度驗(yàn)證等安全功能
D．Oracle數(shù)據(jù)庫(kù)提供細(xì)粒度訪問(wèn)控制
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第68題： 交換機(jī)是構(gòu)成網(wǎng)絡(luò)的基礎(chǔ)設(shè)備，主要功能是負(fù)責(zé)網(wǎng)絡(luò)通信數(shù)據(jù)包的交換傳輸。交換機(jī)根據(jù)功能變化分為五代，其中第二代交換機(jī)又稱為以太網(wǎng)交換機(jī)，其工作于OSI（開放系統(tǒng)互連參考模型）的 (    ) 。
A．物理層
B．?dāng)?shù)據(jù)鏈路層
C．網(wǎng)絡(luò)層
D．應(yīng)用層
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第69題： Apache Httpd 是一個(gè)用于搭建Web 服務(wù)器的開源軟件。Apache Httpd配置文件中，負(fù)責(zé)基本讀取文件控制的是（    ）。
A．httpd.conf
B．srm.conf
C．a(chǎn)ccess.conf
D．mime.conf
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第71題： Methods for (71)people differ significantly from those for authenticating machines and programs, and this is because of the major differences in the capabilities of people versus computers.Computers are great at doing(72) calculations quickly and correctly, and they have large memories into which they can store and later retrieve Gigabytes of information. Humans don't. So we need to use different methods to authenticate people. In particular, the(73) protocols we've already discussed are not well suited if the principal being uthenticated is a person (with all the associated limitations). All approaches for human authentication rely on at least one of the followings:
Something you know (eg. a password).This is the most common kind of authentication used for humans.We use passwords every day to access our systems. Unfortunately,something that you know can become something you just forgot. And if you write it down, then other people might find it.
Something you(74)(eg.a smart card).This form of human authentication removes the problem of forgetting something you know, but some object now must be with you any time you want to be authenticated. And such an object might be stolen and then becomes something the attacker has.
Something you are (eg. a fingerprint).Base authentication on something ?(75)to the principal being authenticated. It's much harder to lose a fingerprint than a wallet. Unfortunately,biometric sensors are fairly expensive and (at present) not very accurate.
A．a(chǎn)uthenticating
B．a(chǎn)uthentication
C．a(chǎn)uthorizing
D．a(chǎn)uthorization
A．much
B．huge
C．large
D．big
A．network
B．cryptographic
C．communication
D．security
A．a(chǎn)re
B．have
C．can
D．owned
A．unique
B．expenseive
C．important
D．intrinsic
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