正确答案: C
文件传输协议
题目:FTP的中文全称是______。
解析:答案:C
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举一反三的答案和解析:
[单选题]试题(61)(61)是导致软件缺陷的最大原因。
需求规格说明书
解析:试题(61)分析
[多选题]●在Windows系统中,进行域名解析时,客户端系统会首先从本机的(37)文件中寻找域名对应的IP地址。在该文件中,默认情况下必须存在的一条记录是(38)。(37)
hosts
dnsfile
192.168.0.1 gateway
127.0.0.1 localhost
解析:A,D
[单选题]●以下关于COM+的描述中,不正确的是(28)。(28)
COM+是COM的新版本,它使COM升级为一个完整的组件架构
[单选题]● ECC的准确解释为 (64) 。(64)
自动错误检查与纠正
[单选题]下列不属于系统安全的技术是( )
加密狗
[单选题]正交变换的种类很多,如傅里叶(Fouries)变换、余弦变换、K-L(Karhunen-Loeve)变换、哈尔(Haar)变换、沃尔什(Walsh)变换等,其中(38)是消除相关性最有效的变换。
K-L变换
解析:解析:正交变换是一种重要的数学分析工具,它可以有效消除数据之间的相关性。在多媒体数据压缩应用中,正交变换也得到了广泛的应用。正交变换的种类很多,如傅里叶(Fouries)变换、余弦变换、K-L变换、小波变换、沃尔什变换等。JPEG图像数据压缩中采样了离散余弦变换和小波变换,而MEPG图像压缩编码中也采用了离散余弦变换和整数变换等正交变换方式。变换编码不是直接对空域图像信号进行编码,而是首先将空域图像信号映射变换到另一个正交矢量空间(变换域或频域),产生一批变换系数,然后对这些变换系数进行编码处理。在众多正交变换类型中,K-L变换是消除数据相关性最有效的正交变换,它是以图像的统计特性为基础的一种正交变换。但由于计算复杂度高,实际应用中很少采样K-L变换。
[多选题]●Extreme Programming (XP) is a discipline ofsoftware development with (71) of simplicity, communication, feedback and courage. Successful software development is a team effort - not just the development team, but the larger team consisting of customer, management and developers. XP is a simple process that brings these people together and helps them to succeed together. XP is aimed primarily at object-oriented projects using teams of a dozen or fewer programmers in one location. The principles of XP apply to any (72) project that needs to deliver quality software rapidly and flexibly.An XP project needs a (73) customer to provide guidance. Customers, programmers, managers, are all working (74) to build the system that's needed. Customers - those who have software that needs to be developed - willlearn simple, effective ways to (75)what they need, to be sure that they are getting what they need, and to steer the project to success.
importance
keys
roles
values
small-sized
moderately-sized
large-sized
huge-sized
part-time
casual
seldom
full-time
together
by themselves
separately
alone
know
communicate
feedback
解析:D,B,D,A,C
[单选题]● UNIX系统采用直接、一级、 二级和三级间接索引技术访问文件,其索引结点有 13 个地址项 ( i_addr[0] ~ i_addr[12])。如果每个盘块的大小为1KB,每个盘块号占4B,则进程A 访问文件F中第11264字节处的数据时, (28) 。(28)
需要二次间接寻址
解析:解析:多次间接寻址方式。为了进一步扩大寻址范围,又引入了二次间接寻址方式和三次间接寻址方式。使用的地址项分别为j.addr(11)和i.addr(12)。二次间接寻址可将寻址范围扩大到64MB。三次间接寻址可将寻址范围扩大到16GB。
[单选题]
B. 50BASE2
C. 10BROAD36
D. 50BASE-T
100BASE-TB. 50BASE2
解析:解析:传统Ethemet的MAC层使用带碰撞检测的载波侦听多路访问(CSMA/CD. ,物理层采用10BASE-T的技术标准。高速高速局域网技术有FastEthemet、交换局域网Switching LAN与ATM,同时它们都符合100BASE-T标准。