Unlike more traditional embedded systems, a full-fledged CPS is typically designed as a （ ）of interacting elements with physical input and output instead of as standalone devices.A.. system B.mechanism C.net D.network

●An Embedded System is a (72)designed for specific control functions within a larger system.

(72) A． computer

B． program

C．computer system

D．tool

A、hard ware

B、output

C、monitor

D、hard disk

which descnption is NOT true?

A．Personal computer has not the features of the larger system．

B．Large systems offer higher processing speeds for user and return more data than PCs．

C．Output devices take output results from the CPU in machine-coded form. and conven them into a form. that used by people.

D．The input/output devices and auxiliary storage units of a computer system are called peripherals.

在J2EE中，下面的代码中出现编译错误的是()。

A.Filef=newFile("/","autoexec.bat");

B.DataInput Streamdin=new Data Input Stream(new File Input Stream("autoexec.bat"));

C.Input Stream Readerin=new Input Stream Reader(System.in);

D.Output Stream Writer out=new Output Stream Writer(System.in);

●The traditional model for systems development was that an IT department used (71)which is a process-centered technique, and consulted users only when their input or approval was needed. Compared with traditional methods, many companies find that JAD allows key users to participate effectivelyin the (72). When properly used, JAD can result in a more accurate statement of system requirements, a better understanding of common goals and a stronger commitment to the success of the new system. RAD is a team-based technique that speeds up information systems development and produces a functiog.information system. Whilethe end productof jAD is a(an)(73),theendproduct of RAD is the (74) .The RAD model consists offour phases. During the(75),users interact with systems analysts and develop models and prototypes that represent all system processes, outputs, and inputs.

(71) A. structured analysis

B. object-oriented analysis

C. prototype analysis

D. process analysis

(72) A. initial scope definition

B. requirements modeling process

C. object modeling process

D. architecture design process

(73) A. data flow diagram

B. entity relationstip model

C. requirements model

D. object model

(74) A. system proposal

B. system design model

C. new system architecture

D. new information system

(75) A. requirements planning phase

B. user design phase

C. construction phase

D. cutover phase

MIMD systems can be classified into(71)-oriented systems, high-availability systems and response-oriented systems. The goal of(71). oriented multiprocessing is to obtain high(71)(72)minimal computing cost. The techniques employed by multiprocessor operating systems to achieve this goal take advantage of an inherent processing versus input/output balance in the workload to produce(73)and(74)loading of system(75).

A．though

B．through

C．throughout

D．throughput

Output is data that has been processed into useful form. called(27). That is a computer processes input into output.

A．data

B．information

C．interface

D．system

● Information systems design is defined as those tasks that focus on the specification of a detailed computer-based solution. Typically, there are four systems design tasks for in-house development.

1) The first task is to specify （71） , which defines the technologies to be used by one, more, or all information systems in terms of their data, processes, interfaces, and network components. This task is accomplished by analyzing the data models and process models that are initially created during requirements analysis.

2) The next systems design task is to develop the （72） . The purpose of this task is to prepare technical design specifications for a database that will be adaptable to future requirements and expansion.

3) Once the database prototype has been built, the systems designer can work closely with system users to develop input, output and dialogue specifications. The （73） must be specified to ensure that the outputs are not lost, misrouted, misused, or incomplete.

4) The fourth design task involves packaging all the specifications from the previous design tasks into a set of specifications that will guide the （74） activities during the following phases of the systems development methodology.

Finally, we should （75） and update the project plan accordingly. The key deliverable should include a detailed plan for the construction phase that should follow.

（71）

A. an application architecture

B. a distributed system

C. a system scope

D. a system physical model

（72）

A. database design specifications

B. database organization decisions

C. data structure specifications

D. data distribution decisions

（73）

A. format and layout

B. transaction details

C. additional instructions

D. internal controls

（74）

A. system administrator’s

B. system analyst’s

C. computer programmer’s

D. system designer’s

（75）

A. adjust the project schedule

B. reevaluate project feasibility

C. evaluate vendor proposals

D. select the best vendor proposal

A complete computer system contains(74)。

A．arithmetic unit, control unit and memory

B．input/output devices and mainframe

C．mainframe. and programs of utility

D．hardware system and software system

Embedded system is(66)special computer system which is scalable on both software and(67). It can satisfy the strict requirement of functionality,(68), cost, volume, and power consumption of the particular application. With rapid development of(69)design and manufacture, CPUs became cheap. Lots of(70)electronics have embedded CPU and thus became embedded systems. For example, PDAs, cellphones, point-of-sale devices, VCRs, industrial robot control, or even your toasters can be embedded system.

A．cost-oriented

B．applieation-oriented

C．efficiency-oriented

D．consumption-oriented