正确答案:

题目：VPN系统中的三种典型技术分别是隧道技术、身份认证技术和加密技术。()

解析：答案：正确

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学习资料的答案和解析：

[单选题]文中（ 2 ）处正确的答案是（ ）。

数字签名机制

[多选题]● People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between us, they usually aren't. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are （71） of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions.The main reason we tend to focus on the （72） rather than the human side of the work is not because it's more （73） , but because it's easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work.

creators

innovators

appliers

technical

classical

social

trivial

crucial

minor

technology

sociology

physiology

technology

sociology

physiology

解析：C,A,B,A,B

[单选题]戴明循环执行顺序，下面哪项正确?

PLAN-DO-CHECK-ACT

解析：答案：C

[单选题]要实现记录的物理J顷序与索引项次序一致，应选择的索引类型是(61)。

聚簇索引

解析：解析：本题考查对数据库物理设计相关概念的掌握。聚簇索引要求物理记录次序与索引项次序一致，起到对物理记录的排序和重组织作用，可以提高某些查询的性能。

[单选题]在OODB中，对象标识______。

是指针一级的概念

[单选题]某软件公司根据技术发展的需要，从另一软件公司购买一项现有的软件技术，并与其签定了技术转让协议。该软件公司在购买该项软件技术的合同中应注意(21)问题。

技术本身和知识产权

解析：解析：按照国际公约和我国现行法律的规定，技术本身不具有财产的性质，而知识产权是国际公约和国内法律知识产权确定的一种财产权利。因此，在购买一项软件技术的合同中，不仅应当注意软件技术本身的先进性、实用性，还应当注意到软件知识产权转让或者许可的问题。