Error message here!

Hide Error message here!

忘记密码?

Error message here!

请输入正确邮箱

Hide Error message here!

密码丢失?请输入您的电子邮件地址。您将收到一个重设密码链接。

Error message here!

返回登录

Close

Embedded system designers' morning test paper in the second half of 2009

ai52learn 2021-02-25 10:20:46 阅读数:409 评论数:0 点赞数:0 收藏数:0

1. Here's about CPU In the narration of , The wrong is (1).

A. CPU The operation signal of each instruction is generated and sent to corresponding parts for control

B. Program counter PC Except for the address where the instructions are stored , You can also temporarily store arithmetic / The result of logical operation

C. CPU The controller in determines the automation of computer operation

D. The instruction decoder is CPU The components in the controller

2. Here's about CISC(Complex Instruction Set Computer, Complex instruction set computer ) and RISC(Reduced Instruction Set Computer, Reduced instruction set computer ) In the narration of , The wrong is (2)

A. stay CISC in , Its complex instructions are executed by hardwired logic

B. use CISC technology CPU, Its chip design is more complex

C. stay RISC in , It is more suitable to use hardwired logic to execute instructions

D. use RISC technology , There are fewer instruction types and addressing methods in instruction system

3. Here's about Check code In the narration of , The right is (3).

A. Hamming code uses the parity of multiple bits to detect and correct errors

B. The code distance of Hamming code must be greater than or equal to 1

C. Cyclic redundancy check code has a strong ability of error detection and correction

D. The code distance of cyclic redundancy check code must be 1

4. Here's about Cache In the narration of , The right is (4).

A. In the case of definite capacity , The time complexity of the replacement algorithm is the key factor Cache The key factor in hit rate

B. Cache Our design idea is to improve the hit rate at a reasonable cost

C. Cache The design goal is to make the capacity equal to the main memory capacity as much as possible

D. CPU Medium Cache The capacity should be greater than CPU In addition to the Cache Capacity

5. http://www.rkb.gov.cn Medium gov It stands for (5).

A. Non governmental organizations

B. business organization

C. government organs

D. Institutions of higher learning

6. stay Microcomputer in , Usually use Main frequency To describe CPU Of (6); For computers disk The least influential factor of work is (7).

A. speed

B. reliability

C. Maintainability

D. Extensibility

7. In a microcomputer , It is usually described by the dominant frequency CPU Of (6); The factor that has the least effect on computer disk work is (7).

A. temperature

B. humidity

C. noise

D. The magnetic field

8. Between the parts of the computer transmission The public access to information is called Bus , once transmission The number of bits of information is often called Bus Of (8).

A. Width

B. length

C. Particle size

D. depth

9. Risk prediction Assess risk in two ways , That is, the possibility of risk occurrence and (9).

A. The cause of the risk

B. Risk monitoring technology

C. Can the risk be eliminated

D. The consequences of risk

10. Among the following intellectual achievements , What can be patented is (10)

A. Computer program code

B. The rules and methods of the game

C. Computer algorithms

D. The program used to control the test process

11. The software owner and the licensee sign a software license contract . If at the right time contract The appointed time and place Range Inside , The software owner shall not license any third party to use the software in the same way , But software owners can use it themselves , Then the license is (11).

A. Exclusive license to use

B. Exclusive license to use

C. General license to use

D. Part of the license uses

12. multimedia Medium “ The media ” It has two meanings , One is to store information Entity ; The second is the carrier of expressing and transmitting information .(12) It's for storing information Entity .

A. written words 、 graphics 、 Magnetic tape 、 Semiconductor memory

B. disk 、 Compact disc 、 Magnetic tape 、 Semiconductor memory

C. written words 、 graphics 、 Images 、 voice

D. Sound card 、 Magnetic tape 、 Semiconductor memory

13. RGB8:8:8 Represents a frame Color images Of Color The number of (13) Kind of .

A. 22

B. 28

C. 224

D. 2512

14. Bitmap Compared to vector graphics , Bitmap (14).

A. Large space occupation , Processing focuses on getting and copying , The display speed is fast

B. Take up less space , Processing focuses on drawing and creating , The display speed is slow

C. Large space occupation , Processing focuses on getting and copying , The display speed is slow

D. Take up less space , Processing focuses on drawing and creating , The display speed is fast

15. When using Structured approach Conduct Systems analysis when , According to the principle of decomposition and abstraction , According to the system Data processing The process of , use (15) To build the logical bottle of the system , So as to complete the analysis work .

A. E-R chart

B. Data flow diagram

C. Program flow chart

D. Software architecture

16. object-oriented development method His basic idea is to analyze and solve problems as much as possible according to the method of human understanding of the objective world ,(16) Methods do not belong to Object oriented methods .

A. Booch

B. Coad

C. OMT

D. Jackson

17. Make sure to build software system The number of people needed , Don't need to consider (17).

A. The market prospect of the system

B. The scale of the system

C. The technical complexity of the system

D. Project plan

18. A project to fix a mistake change . But this error was corrected , It causes errors in code that used to work correctly .(18) Most likely to find this problem .

A. unit testing

B. Be tested

C. regression testing

D. Install the test

19. many Programming language Regulations , In program data Must have a type , Its role does not include (19).

A. Easy to allocate storage units for data

B. It is convenient to check the data objects that participate in the expression calculation

C. Easy to define dynamic data structure

D. It is convenient to specify the value range of data object and the operation that can be carried out

20. Here's about C/C++ Language The pointer In the description of variables , The right is (20)

A. A pointer variable can be a global variable or a local variable

B. The pointer variable must be allocated the same size of storage space as the variable the pointer points to

C. It doesn't make sense to do arithmetic operations on pointer variables

D. Pointer variables must be assigned by dynamically generated data objects

21. take High-level language Source program Translated into machine language In the process of program, we often introduce Intermediate code . Here's about Intermediate code In the narration of , The wrong is (21).

A. Different high-level programming languages can produce the same kind of intermediate code

B. The use of intermediate code is conducive to machine independent optimization

C. Using intermediate code can improve the portability of compiler

D. Intermediate code and machine language code must be consistent in instruction structure

22. operating system It's the first layer of software on bare metal , other Systems software ( Such as (22) Equal sum Application software It's all based on operating system Based on . The figure below ①②③ respectively (23).

A. compiler 、 Financial software and database management system software

B. assembler 、 Compilers and Java Interpreter

C. compiler 、 Database management system software and car security program

D. Language handler 、 Office management software and weather forecast software

23. The operating system is the first layer of software on the bare machine , Other system software ( Such as (22) And application software are based on the operating system . The figure below ①②③ respectively (23).

A. Application developers 、 End users and system software developers

B. Application developers 、 System software developers and end users

C. end user 、 System software developers and application software developers

D. end user 、 Application software developers and system software developers

24. On stand-alone Computer system in , Dual bus The bus system of a structured computer is generally composed of (24) form .

A. Processor bus and I/O Bus

B. Data bus and I/O Bus

C. System bus and memory bus

D. ISA Bus and PCI Bus

25. stay Computer system in ,(25) It's transparent to programmers

A. Disk memory

B. Cache

C. RAM Memory

D. flash Memory

26. The following about Assembly line In the narration of , The wrong is (26).

A. Pipelining can improve throughput

B. Pipelining improves device utilization

C. Pipelining improves the processing speed of single instruction

D. Superscalar processors are pipelined

27. The computer is in a Instruction cycle in , In order to learn from Memory Read instruction opcode , First, you need to (27) To Address bus On . Perform direct Transfer order when , The transfer address in the instruction is sent to (28).

A. Program counter

B. Control register

C. Status register

D. General registers

28. The computer is in an instruction cycle , To read instruction opcodes from memory , First, you need to (27) To the address bus . When executing the direct transfer instruction , The transfer address in the instruction is sent to (28).

A. accumulator

B. Address register

C. Program counter

D. Memory

29. Computer system The bus includes ① Address bus 、② data bus and ③ Control bus . If the DMA Way to transmit data , be DMA controller Answer (29) Control .

A. ①②

B. ②③

C. ①③

D. ①②③

30. some SRAM Chip Capacity by 512X8 position , In addition to the power and ground terminals , The minimum number of leads for the chip should be (30).

A. 23

B. 25

C. 50

D. 19

31. In general , if disk Double the speed , be (31).

A. The average seek time is reduced by half

B. The access speed is also doubled

C. The average seek time is not affected

D. Access speed remains the same

32. For hook in Bus Multiple components on the , The following statement is correct (32).

A. Only time-sharing data can be sent to the bus , And can only receive data from the bus time-sharing

B. Only time-sharing data can be sent to the bus , But it can receive data from the bus at the same time

C. Data can be sent to the bus at the same time , And receive data from the bus at the same time

D. Data can be sent to the bus at the same time , But it can only receive data from the bus in time

33. about TTL NAND gate Processing of idle inputs , The wrong thing to do is (33).

A. Connect the power supply

B. Through resistance 3kQ Connect the power supply

C. Grounding

D. In parallel with a useful input

34. The following figure Computer hardware system The basic components ①、②、③、④ and ⑤ For the name of the (34).

A. ① controller 、② Arithmetic unit 、③ Memory 、④ input device 、⑤ Output devices

B. ① Arithmetic unit 、② controller 、③ Memory 、④ input device 、⑤ Output devices

C. ① Arithmetic unit 、② Memory 、③ controller 、④ input device 、⑤ Output devices

D. ① Arithmetic unit 、② controller 、③ Memory 、④ Output devices 、⑤ input device

35. RS~422 Yes (35) root Data signals Line : and RS~485 At least (36) root Data signals Line .

A. 9

B. 8

C. 6

D. 4

36. RS~422 Yes (35) A data signal line : and RS~485 At least (36) A data signal line .

A. 2

B. 6

C. 8

D. 16

37. The following computers Bus It's serial Bus Yes. (37).

A. PCI

B. 1394

C. VME

D. ISA

38. When using (38) Yes Peripheral In the case of addressing , No special I/O Instructions .

A. Unified addressing method

B. Single address method

C. Virtual addressing

D. Unified addressing and separate addressing

39. CPU Power up The first thing to do is Instructions The address of is given by (39) Decisive .

A. operating system

B. Application software

C. Developer

D. Processor manufacturers

40. The embedded operating system in ,(40) It's not a synchronization mechanism between tasks .

A. Semaphore

B. event

C. Timer

D. The signal

41. stay ANSIC in ,sizeoffint) Is in (41) To determine its occupation Memory Space size .

A. edit

B. compile

C. link

D. function

42. In a certain 32 position In the system , If you declare variables char*files[]={"f1","f2","f3","f4"}, be files Occupy Memory The size is (42) byte .

A. 4

B. 8

C. 12

D. 16

43. In order to improve the Embedded software Of Portability , We should pay attention to improve the quality of software (43).

A. Ease of use

B. Security

C. reliability

D. Hardware independence

44. The following is about data In the related description of storage structure , The right is :①(44):②(45).

A. Sequential storage can only be used to store linear structures

B. The advantage of sequential storage is storage density , Insert 、 Deletion is efficient

C. Each node of the linked list exactly contains a pointer

D. The storage mode of the queue can be sequential , It can also be linked

45. In the following description of data storage structure , The right is :①(44):②(45).

A. The node of hash table only contains the information of data element itself , Does not contain any pointers

B. Load factor ( Loading factor ) Is an important parameter of hash method , It reflects how full the hash table is .

C. The basic idea of hash storage is to take the value of key word as the storage address of data

D. In hashing , Different keyword values corresponding to different storage addresses are called conflicts

46. operating system stay (46) Provide directory management classes to users command 、 File action class command 、 File management class command ; operating system stay (47) Provide users with create files 、 To revoke a document 、 Open file 、 Close file 、 Reading documents 、 Write files and other system calls .

A. Physical level

B. Operation level

C. Storage level

D. Programming level

47. Operating system in (46) Provides the directory management class command to the user 、 File operation class Command 、 File management commands ; Operating system in (47) Provide users with create files 、 To revoke a document 、 Open file 、 Close file 、 Reading documents 、 Write files and other system calls .

A. Physical level

B. Operation level

C. Storage level

D. Programming level

48. harvard (Harvard) The basic characteristics of the structure are as follows (48).

A. Adopt multiple instruction streams and single data streams

B. Programs and data are stored in different spaces

C. Using stack operations

D. The memory selects the address according to the content

49. Carry out the following paragraph C After procedure , Variable sum The value should be (49).

A. 428

B. 172

C. 300

D. 427

50. if TMS320C6000 Of Assembly line The depth reaches 8 Class time , The device can operate simultaneously (50) strip Instructions .

A. 7

B. 8

C. 9

D. 2

51. The following about IEEE1394 In the narration of , The right is (51).

A. IEEE1394 The highest transmission rate can reach 120Mb/s

B. IEEE1394 have 32 Bit address width

C. IEEE1394 Regardless of master device and slave device , They're both leaders and service providers

D. IEEE1394 Is a parallel interface standard , So the transmission rate is very fast

52. The following is about the task Context switch Description of , The wrong is (52)

A. The task context is the task control block (TCB) Component part

B. Context switching is done by a special task

C. Context switching time is the influence of RTOS An important indicator of performance

D. Context switching is done by RTOS Internal finish

53. The following Process status Changing ,(53) Change is impossible .

A. function → be ready

B. function → be ready

C. wait for → function

D. wait for → be ready

54. existing 3 Two simultaneous assignments Jl、J2 and J3, Their execution time Namely T1、T2 and T3, And T1<T2<T3. The system operates in single channel mode and short operation is preferred Algorithm , Then the average turnaround time is (54).

A. T1+T2+T3

B. (T1+T2+T3)/3

C. (3T1+2T2+T3)/3

D. (T1+2T2+3T3)/3

55. The following about Embedded software middleware In the narration of , The wrong is (55).

A. Middleware through standard interfaces , Implement the association with the application , Services that provide specific functions

B. The use of middleware improves the portability of application software

C. The use of middleware increases the complexity of application software design

D. The use of middleware improves the efficiency and ability of embedded software development

56. Press Instructions Flow and data The organization of flow , Computer system There are different types of structures for , Massively parallel processor MPP Belong to (56) structure .

A. SISD

B. SIMD

C. MISD

D. MIMD

57. The following does not belong to The embedded operating system Yes. (57).

A. WindowsCEB

B. VxWorks

C. Windows XP

D. μC/OS-II

58. operating system Medium Spooling technology , The essence is to (58) Turn it into a shared device .

A. Virtual device

B. Exclusive device

C. Offline devices

D. Block device

59. The next paragraph C In the program , Loop body statement (59) Exit loop .

A. perform 100 Next time

B. perform 101 Next time

C. perform 99 Next time

D. Dead cycle , Can't

60. Embedded software The development process generally includes requirements analysis phase software design Stage 、 code Phase and integration phase , The following does not belong to Embedded software design phase The job is (60).

A. Software architecture design

B. Software external interface definition

C. Software function module division

D. Program flow chart preparation

61. Software quality Management activities do not include (61).

A. Software quality assurance

B. Verification and validation

C. Review and audit

D. Software coding

62. Software process improvement (SPI) Most use IDEAL Model , The model will SPI The process is divided into (62).

A. Start-up phase 、 The establishment phase 、 Operation phase

B. Start-up phase 、 The establishment phase 、 The diagnosis stage 、 Operation phase

C. Start-up phase 、 The diagnosis stage 、 The establishment phase 、 Operation phase 、 Learning phase

D. Start-up phase 、 The establishment phase 、 Operation phase 、 The diagnosis stage 、 Recovery phase

63. software test It can be divided into (63).

A. unit testing 、 Component testing 、 Configuration item test 、 The system test

B. Black box testing 、 White box testing 、 Grey box testing

C. Code walkthrough 、 Logic test 、 A functional test 、 Performance testing

D. The interface test 、 Boundary test 、 Component testing 、 The system test

64. Software Capability Maturity Model (Capability Maturity Model,CMM) take Software Capability Maturity From low to high, they are divided into (64).

A. Initial level 、 Level defined 、 Repeatable level 、 Management level 、 Optimization level

B. Initial level 、 Level defined 、 Management level 、 Repeatable level 、 Optimization level

C. Initial level 、 Repeatable level 、 Management level 、 Level defined 、 Optimization level

D. Initial level 、 Repeatable level 、 Level defined 、 Management level 、 Optimization level

65. In the following options , Do not belong to HTTP client Yes. (65)

A. IE

B. Netscape

C. Mozilla

D. Apache

66. The following Network interconnection In the device , Belong to The physical layer Yes. (66), Belong to The network layer Yes. (67).

A. Repeater

B. Switch

C. Router

D. bridge

67. In the following network interconnection devices , What belongs to the physical layer is (66), What belongs to the network layer is (67).

A. Repeater

B. Switch

C. Router

D. bridge

68. The picture below is HTML file testhtml stay IE The display effect in , In the implementation diagram ① It has no effect HTML The sentence is (68), In the implementation diagram ② It has no effect HTML The sentence is (69), In the implementation diagram ③ It has no effect HTML The sentence is (70).

A. </TITLE> My home page </TITLE>

B. <HEAD> My home page </HEAD>

C. < BODY>> My home page </BODY>

D. <H1> My home page </H1>

69. The picture below is HTML file testhtml stay IE The display effect in , In the implementation diagram ① It has no effect HTML The sentence is (68), In the implementation diagram ② It has no effect HTML The sentence is (69), In the implementation diagram ③ It has no effect HTML The sentence is (70).

A. <HR>

B. <LINE>〈/LINE>

C. <CELL></CELL>

D. <TR></TR>

70. The picture below is HTML file testhtml stay IE The display effect in , In the implementation diagram ① It has no effect HTML The sentence is (68), In the implementation diagram ② It has no effect HTML The sentence is (69), In the implementation diagram ③ It has no effect HTML The sentence is (70).

A. <B>Welcome</B>

B. <UL>Welcome</UL>

C. <I>Welcome</I>

D. <H>Welcome</H>

71. Why is (71) fun? What delights may its practitioner expect as his reward? First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles,playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the (72) nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes (73) • sometimes theoretical, and
sometimes both. Finally, there is the delight of working in such a tractable medium. The (74) , like the poet, works only slightly removed from pxire thought-stuflF. Few media of
creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (75) , unlike the poet's words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A. programming

B. composing

C. working

D. writing

72. Why is (71) fun? What delights may its practitioner expect as his reward? First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles,playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the (72) nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes (73) • sometimes theoretical, and
sometimes both. Finally, there is the delight of working in such a tractable medium. The (74) , like the poet, works only slightly removed from pxire thought-stuflF. Few media of
creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (75) , unlike the poet's words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A. repeating

B. basic

C. non-repeating

D. advance

73. Why is (71) fun? What delights may its practitioner expect as his reward? First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles,playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the (72) nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes (73) • sometimes theoretical, and
sometimes both. Finally, there is the delight of working in such a tractable medium. The (74) , like the poet, works only slightly removed from pxire thought-stuflF. Few media of
creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (75) , unlike the poet's words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A. semantic

B. practical

C. lexica

D. syntactical

74. Why is (71) fun? What delights may its practitioner expect as his reward? First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles,playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the (72) nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes (73) • sometimes theoretical, and
sometimes both. Finally, there is the delight of working in such a tractable medium. The (74) , like the poet, works only slightly removed from pxire thought-stuflF. Few media of
creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (75) , unlike the poet's words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A. poet

B. architect

C. doctor

D. programmer

75. Why is (71) fun? What delights may its practitioner expect as his reward? First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles,playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the (72) nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes (73) • sometimes theoretical, and
sometimes both. Finally, there is the delight of working in such a tractable medium. The (74) , like the poet, works only slightly removed from pxire thought-stuflF. Few media of
creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (75) , unlike the poet's words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A. construct

B. code

C. size

D. scale

Get answers and detailed answer analysis :https://ai.52learn.online/10418

Copyright statement
In this paper,the author:[ai52learn],Reprint please bring the original link, thank you

飞链云3D数字艺术品
30万现金开奖等你来领