原NCRE全国计算机四级_相关试题

软件维护是软件生命周期的重要组成，而影响维护的因素较多，除了人员因素、技术因素和管理因素外，还有程序自身的因素，具体影响因素可归纳为： 1)软件系统的规模： 2)软件系统的年龄： 3)软件系统的结构。试回答以下问题： 1．给
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
380
目前，大多数计算机系统都支持虚拟页式地址转换机制。试回答下列问题： 1．页式存储管理方案中，用户地址空间怎样划分?内存地址空间怎样划分?内存分配过程是怎样的? 2．页表应设计哪些数据项，每个数据项的作用是什么? 3．页式存储管理方案中，地
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
290
About the following IP addresses, Which is incorrect? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
450
Which routing select algorithm is described below? According to a kind of fix regulation, the select algorithm of route works an
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
540
How many bits IP address are there in IPv6? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
80
Local bus can reduce the occupation time of CPU.For the EISA local bus, commonly the time can be reduced to( ).
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
600
Which is not a characteristic of an RISC processor? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
90
The most commonly used locked level in implementing concurrency control is at which of the following levels? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
200
In the following statements about functional dependency, which one is incorrect? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
270
Which of the following statements about testing software with data is (are) true? ( ) Ⅰ．The primary purpose of such testi
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
370
Which function is not served by building a prototype? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
220
What is the contrapositive of the relation represented in the exhibit shown below? ( )
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
350
When the adjacency matrix method is used to store a graph, which of the statements is (are) true? ( ) Ⅰ．the space require
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
130
The Instruction Register (IR) is normally used to point out( ).
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
80
Give the logical variables X=0, Y=1, The value of X∧Y(logical multiply) is( ).
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
140
如果调制解调器的调制速率为4800baud，采用8相调制，那么该调制解调器的数据传输速率为
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
270
在有随机热噪声的通信信道上传输数据信号时，信道的最大数据传输速率决定于信道带宽与
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
470
计算机网络从网络覆盖范围上，可以分为局域网、广域网与
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
670
网络拓扑反映出网络中各实体之间的结构关系，它影响着网络的性能、系统可靠性与
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
270
计算机网络从组网设备的功能上，可以分为通信子网与
笔试原NCRE全国计算机四级NCRE全国计算机四级
admin2009-2-24
340