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●美国国防部与国家标准局将计算机系统的安全性划分为不同的安全等级，下面的安全等级中最低的是 (64) 。 (64) a.a1 b.c1 c.d1 #Nf3�s$,8D%F \Bb ( 贵州 学 习 网 IT认证计算机软件水平考试 ) #Nf3�s$,8D%F \BbhTTp://wWw.gZu521.cOm d.b1 ●下面描述正确的是 (65) 。 (65) a.数字签名技术用来保证数据在传输过程中的安全性 b.数字信封技术用来保证数据在传输过程中的完整性 c.电子支票只要第二方认证就可以使用 d.以上都不对 ●in internet， (66) used as a barrier to prevent the spread of viruses. (66) a.modom b.firewire c.firewall d.netcard ●different quality factors of software can be reflected upon user’s different points of view，through product running，product modification and product transformation.of the following properties，which one is connected with product running? (67) . ⅰ.correctness ⅱ.robustness ⅲ.re-use (67) a.ⅰ b.ⅱ c.ⅰ，ⅱ d.以上都是 ●a (68) is a feature of the system or adescription of something the system is capable of doing in order to fulfill the system’s purpose. (68) a.plan b.requirement c.document d.design ●in order to improve the performance of a network server，you need to select bus or local bus.the appropriate local bus is (69) . (69) a.vesa b.isa c.eisa d.pci ●local bus can increase the data throughput.the bus that is most frequently used is (70) . (70) a.vesa b.pci c.mca d.eisa ●a firewall is a (71) system designed to (72) an organization′s network against threats. (71) a.operating b.programming c.security d.data (72) a.prevent b.protect c.examine d.exploit ● software maintenance is to do necessary modification，supplenemt，and completeness during software life circle.among the following vary kinds of maintenance，which one has the maximum workload in a general way? (73) . (73) a.relevance maintenance b.completeness maintenance c.correctness naintenance d.other kinds of maintenance ●if file a has the capability of 724，the same group’s users of file a may do (74) . (74) a.read a only b.write a c.execute a d.non-operation ●where box testing of software testing is a test for software structure.which of the following item should noe be included ing the content of white box? (75) . (75) a.boundary value analysis b.statement testing c.branch testing d.path testing ●where box testing of software testing is a test for software structure.which of the following item should noe be included ing the content of white box? (75) .  |
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