(1) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems.Ultimately, the system models become the(2) for designing and constructing an improved system. (3) is such a technique. The emphasis in this technique is process-centered.Systems analysts draw a series of process models called (4) . (5) is another such technique that integrates data and process concerns into constructs called objects.
(1)A、Prototyping
B、Accelerated
C、Model-driven
D、Iterative
(2)A、image
B、picture
C、layout
D、blueprint
(3)A、Structured analysis
B、Information Engineering
C、Discovery Prototyping
D、Object-Oriented analysis
(4)A、PERT
B、DFD
C、ERD
D、UML
(5)A、Structured analysis
B、Information Engineering
C、Discovery Prototyping
D、Object-Oriented analysis
分配给某校园网的地址块是202.105.192.0/18,该校园网包含 ( ) 个C类网络。
A、6
B、14
C、30
D、62
在Windows操作系统中,采用 ( ) 命令来测试到达目标所经过的路由器数目及IP地址。
A、ping
B、tracert
C、arp
D、nslookup
以下关于DHCP服务的说法中正确的是 ( ) 。
A、在一个子网内只能设置一台DHCP服务器,以防止冲突
B、在默认情况下,客户机采用最先到达的DHCP服务器分配的IP地址
C、使用DHCP服务,无法保证某台计算机使用固定IP地址
D、客户端在配置时必须指明DHCP服务器IP地址,才能获得DHCP服务