问题 单项选择题

以下关于软件性能测试的说法中,不正确的是______。

A.发现软件缺陷是性能测试的目的之一

B.压力测试与负载测试的目的都是为了探测软件在满足预定的性能需求的情况下所能负担的最大压力

C.性能测试通常需要对测试结果进行分析才能获得测试结论

D.检验软件的最大负载是性能测试的目的之一

答案

参考答案:B

解析:[分析] 软件性能测试有3个目标:①发现缺陷,②性能调优,③能力检验与规划,A说法正确。
压力测试是指在较大的业务压力下,即系统运行环境超常的情况下,测试软件是否存在功能和性能上的缺陷。负载测试是指不断增加软件的业务压力,探测软件在保证预定性能指标的情况下所能负担的最大压力。压力测试和负载测试是有区别的,二者都需要对软件施加业务压力,但根本目的完全不同,负载测试是探测软件处理能力的极限,而压力测试是利用压力揭示潜在缺陷,B说法错误。
性能测试通常需要对测试结果进行分析才能获得测试结论,C说法正确。
性能测试的目的之一,就是检验软件的最大负载,D说法正确。

单项选择题
填空题

For more than two centuries, American’s colleges and universities have been the backbone of the country’s progress. They have educated the technical, managerial, (1) and provided generation after generation of national leaders. Today educators from around the globe are turning to U. S. institutions of higher learning (2) . They are apt to find many reasons for the excellence of American universities, but (3) stand out as watersheds:
Education (4) : In 1862 Congress enacted the Land-Grant College Act, which essentially extended the opportunity of higher education (5) , including such disenfranchised groups as women and minorities. Each state was permitted to sell large tracts of (6) and use the proceeds to endow at least one public college.
(7) : Over the years, the decentralization and diversity of the America’s colleges and universities have promoted competition for students and resources. Competitive pressure first arose (8) . The academy’s impact really grew after World War II, when (9) commissioned by President Roosevelt argued that it was the federal government’s responsibility to (10) for basic research. Instead of being centralized in government laboratories, scientific research (11) in American universities and generated increasing investment. It also gave graduate students research opportunities and helped (12) far and wide, to the benefit of industry, medicine and society as a whole.
(13) : The end of the World War II saw passage of the Servicemen’s Readjustment Act of 1944. The law, which provided for (14) for returning veterans, made an already democratic higher-education system accessible in ways that were (15) in Europe, opening the doors of the best universities to men and women who had (16) of going to college.
(17) : The creation of federal loan guarantees and subsidy programs, as well as outright grants for college students brought (18) to higher education and further helped to democratize access. Since its founding (19) , the Federal Family Education Loan Program has funded more than 74 million student loans worth more than (20) .