X．25公用数据网属于（ ）

【名词&注释】

技术发展(technology development)、市场需求(market demand)、基本概念(basic concept)、生产条件(production conditions)、时序电路(sequential circuit)、经济研究(economic research)、经济效益和社会效益(economic and social benefits)、通信子网(communication subnet)、风险可控性、微操作信号发生器(microoperation signal generator)

[单选题]X．25公用数据网属于（ ）

A. 资源子网
B. 通信子网^{(communication subnet)}

查看答案&解析查看所有试题

学习资料：

[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.

A. (71)
B. importance
C. keys
D. roles
E. values
F. ( 72)
G. small-sized
H. moderately-sized
I. large-sized
J. huge-sized
K. (73)
L. part-time
M. casual
N. seldom
O. full-time
P. (74)
Q. together
R. by themselves
S. separately
T. alone
U. tell
V. know
W. communicate
X. feedback

[多选题]关于Blowfish算法的描述中，正确的是

A. 属于非对称算法
B. 运算速度较快
C. 密钥长度可变
D. 子密钥在加密时计算
E. 分组长度为56位

[单选题]是承建方项目立项的第一步，其目的在于选择投资机会、鉴别投资方向。

A. 项目论证
B. 项目评估
C. 项目识别
D. 项目可行性分析

[单选题]在数据库系统中，数据完整性约束的建立需要通过数据库管理系统提供的数据(28)语言来实现。

A. 定义
B. 操作
C. 查询
D. 控制

[单选题]计算机的控制单元(CU)控制着运算单元和寄存器组正确地实现要求的操作。以下不属于控制单元(CU)组成部件的是(3)。

A. 程序计数器
B. 指令寄存器
C. 时序产生器
D. 多路转换器

本文链接：https://www.51ksbd.net/show/6yxzy4.html