The term computer describes a device made up of a combination of electronic components.By itself, a computer has no ( ) and is referred to as hardware, which means simply the physical equipment. The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications.
A system is defined as a collection of related components that (2) to perform a task in order to accomplish a goal. Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions.
Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)( )
From time to time, organizations need to ( ) their information systems, in, response to new marketing' opportunities, modified government regulations, the introduction .of new technology, merger with another company, or other developments. When change is needed, the time is ripe for applying the principles of systems analysis and design.
(2)应选( )。
- A.interact
- B.work
- C.connect
- D.change
正确答案及解析
正确答案
解析
翻译:
计算机这个术语描述由电子的和机电的部件组合而成的一种设备。计算机本身没有只能,因此称为硬件,仅仅是物理设备。硬件只有和其他要素连接才能使用,所有这些要素即为构成基于计算机信息系统的六要素:硬件、软件、数据/信息、人、操作程序和通信。
系统定义为一组相关组件的集合,这些组件相互交互以完成一个任务,以实现一个目标。任何使用信息技术的组织会拥有一个基于计算机的信息系统,给管理人员(和各类员工)提供适当类型的信息以帮助他们做出决策。
系统分析和设计是确定系统如何工作然后经过一系列步骤以使其更好。通常,采用系统方法来定义、描述和解决一个问题或满足一个目标。
随着时间推移,新的市场机会、政府规定的变化、新技术的出现、公司兼并以及其他方面的发展等,使得组织需要改变其信息系统。当需要改变时,应用系统分析与设计的时机已经成熟。
包含此试题的试卷
你可能感兴趣的试题
一台主机的IP地址为202.123.25.36,掩码为255.255.254.0。如果该主机需要在该网络进行直接广播,那么它应该使用的目的地址为( )
-
- A.202.123.25.0
- B.202.123.25.255
- C.202.123.24.0
- D.202.123.24.255
- 查看答案
在计算机系统的日常维护工作中,应当注意硬盘工作时不能__(2)__。另外,需要防范病毒,而__(3)__是不会被病毒感觉的。
-
- A.电子邮件
- B.硬盘
- C.U盘
- D.ROM
- 查看答案
有 4 个 IP 地址:201.117.15.254、201.117.17.01、201.117.24.5 和 201.117.29.3,如果子网掩码为 255.255.248.0,则这 4 个地址分别属于3个子网;其中属于同一个子网的是()
-
- A.201.117.15.254 和 201.117.17.01
- B.201.117.17.01 和 201.117.24.5
- C.201.117.15.254 和 201.117.29.3
- D.201.117.24.5 和 201.117.29.3
- 查看答案
在异步通信中,每个字符包含1位起始位、7位数据位、1位奇偶位和1位终止位,每秒钟传送200个字符,采用4相位调制,则码元速率为()。
-
- A.50波特
- B.500波特
- C.550波特
- D.1000波特
- 查看答案
在 Windows 中,运行( )命令得到下图所示结果。以下关于该结果的叙述中,错误的是( )。
Pinging 59.74.111.8 with 32 bytes of data:
Reply from 59.74.111.8: bytes=32 time=3ms TTL=60
Reply from 59.74.111.8: bytes=32 time=5ms TTL=60
Reply from 59.74.111.8: bytes=32 time=3ms TTL=60
Reply from 59.74.111.8: bytes=32 time=5ms TTL=60
Ping statistics for 59.74.111.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 3ms, Maximum = 5ms, Average = 4ms
-
- A.该命令使得本地主机向目标主机发送了 4 个数据包
- B.本地主机成功收到了目标主机返回的 4 个数据包
- C.本地主机与目标主机连接正常
- D.该命令用于查看目标主机的 IP 地址
- 查看答案