2010年软件水平考试软件设计师考前练习题(3)

　　试题64.为了网络的安全，常常使用防火墙技术。防火墙技术是 (64) 。

　　(64)A.为了控制网络访问而配置的硬件设备

　　B.为了防止病毒攻击而编制的软件

　　C.指建立在内外网络边界上的过滤封锁机制

　　D.为了避免发生火灾专门为网络机房构造的隔离墙

　　试题65.双宿主机至少具有两个网络接口，分别连接内外两个网络，两个网卡之间的通信是 (65) 。

　　(65)A.直接通信

　　B. 直接转发IP包

　　C. 通过软件转发IP包

　　D. 不进行任何通信

　　试题66～70.Sequential circuit is a common logic device whose output values, at a given instant, depend upon its input values and the internal state at that instant, and whose internal state depends upon the (66) preceding inputvalues and the preceding internal state. A sequential circuit can assume a finite number of internal states and may therefore be regarded, from an abstract (67) , as a finite (68) .Combinational circuit is another logic device whose output values, at any given instant, depend upon the input values at that instant. A combinational circuit is a (69) of a sequential circuit whose internal state is not taken (70) .(66) A.directly B.immediately C.instantly D.snapshot

　　(67) A.idea B.observation C.point of view D.viewport

　　(68) A.automaton B.robot C.manipulator D.man-machine system

　　(69) A.counterexample B.specification C.particular D.special case

　　(70) A.calculation B.in account C.audit D.attention

　　试题71～75.Artificial intelligence(AI),an interdisciplinary field, is usually regarded as a branch of computer science, dealing with models and systems for the performance of functions generally associated with human intelligence, such as (71) and learning.In AI, knowledge-based system is an information (72) system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base. Moreover, some knowledge-based systems have learning capabilities.Expert system (ES) indicates the knowledge-based system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base developed from human (73) . Some expert systems are able to (74) their knowledge base and develop new inference rules based on their experience with previous problems. The term “expert system” is sometimes used (75) with “knowledge-based system”, but should be taken to emphasize expert knowledge.

　　(71) A.inferring B.reasoning C.deriving D.proving

　　(72) A.supervisory B.manipulating C.management D.processing

　　(73) A.experience B.know-how C.expertise D.skillfulness

　　(74) A.renew B.improve C.upgrade D.amend

　　(75) A.synonymously B.equivalently C.substitutionally D.homomorphously