2021年12月29日来源:信管网 作者:cnitpm
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软件设计师每日一练试题内容(2021/12/28)
试题1: MPEG-I编码器输出视频的数据率大约为(1)。PAL制式下其图像亮度信号的分辨率为(2),帧速为(3)。
(1)A、128Kb/s
B、320Kb/s
C、1.5Mb/s
D、15Mb/s
(2)A、352×288
B、576×352
C、720×576
D、1024×720
(3)A、16帧/秒
B、25帧/秒
C、30帧/秒
D、50帧/秒
People are i ndulging in an illusion whenever t hey find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "i n 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 busi ness. The rest of us are (1) of their work. We use computers and other new t echnology 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 mostl y in the human communication business. Our successes stem
from good human int eractions by all participants in the effort, and our failures stem from poor human interactions.
The main reason we tend to focus on t he (2) rather t han the human side of the work is
not because it's more (3) , but because it's easier to do. Getting the new disk drive installed is positively trivial compared t o 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.
If you find yourself concentrating on the (4) rather than the (5), you're like t he
vaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on t he adjacent street because, as he explains, "The light is better there!".
(1)A、creators
B、innovators
C、appliers
D、inventors
(2)A、technical
B、classical
C、social
D、societal
(3)A、trivial
B、crucial
C、minor
D、insignificant
(4)A、technology
B、sociology
C、physiology
D、astronomy
(5)A、technology
B、sociology
C、physiology
D、astronomy
某公司采用的软件开发过程通过了 CMM2 认证,表明该公司 ( ) 。
A、开发项目成效不稳定,管理混乱
B、对软件过程和产品质量建立了定量的质量目标
C、建立了基本的项目级管理制度和规程,可对项目的成本、进度进行跟踪和控制
D、可集中精力采用新技术新方法,优化软件过程
媒体可以分为感觉媒体、表示媒体、表现媒体、存储媒体、传输媒体,()属于表现媒体。
A.打印机
B.硬盘
C.光缆
D.图像
某银行为用户提供网上服务,允许用户通过浏览器管理自己的银行账户信息。为保障通信的安全性,该 Web 服务器可选的协议是 ( ) 。
A、POP
B、SNMP
C、HTTP
D、HTTPS
结构化开发方法中,()主要包含对数据结构和算法的设计。
A.体系结构设计
B.数据设计
C.接口设计
D.过程设计
某一非确定性有限自动机(NFA)的状态转换图如下图所示,与该NFA等价的正规式是(1),与该NFA等价的DFA是(2)。
(1)
(2)
设有关系模式R(A1,A2,A3,A4,A5,A6),其中:函数依赖集F={A1→A2,A1A3→A4,A5A6→A1,A2A5→A6,A3A5→A6},则(1 )是关系模式R的一个主键,R规范化成都最高达到(2 )。
(1)A.A1A4
B.A2A4
C.A3A5
D.A4A5
(2)A. 1NF
B. 2NF
C. 3NF
D. BCNF
某计算机系统页面大小为4K,若进程的页面变换表如下所示,逻辑地址为十六进制1D16H。该地址经过变换后,其物理地址应为十六进制 ( ) 。
A.1024H
B.3D16H
C.4Dl6H
D.6D16H
CPU中译码器的主要作用是进行()。
A.地址译码
B.指令译码
C.数据译码
D.选择多路数据至ALU
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