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TAW10 ABAP Certification Test Part 2.pdf

TAW10

ABAP

Certification

Test

Part

需积分: 10 18 下载量 69 浏览量更新于2023-03-16 评论 1 收藏 356KB PDF 举报

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TAW10 ABAP Certification Test Part 2.pdf

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TAW10 - Week 2

Total Score: 0 %

1 - A program needs to gain access to the public attri ...

2 - The concept of restricting direct access to data v ...

3 - Identify the characteristics of the self reference ...

4 - The syntax for instance method specification is ...

5 - What syntax provides access to individual componen ...

6 - Identify the ABAP OO Event signature protocols ...

7 - Mark the item that is NOT true about the handler t ...

8 - In the following method, what other parameters are ...

9 - What implications exist when private components of ...

10 - Finish the following sentence so that it is TRUE. ...

11 - Choose the correct redefinition of the superclass ...

12 - In the context of Triggering and Handling of Event ...

13 - An inherited class : ...

14 - What is contained in a class that does not exist i ...

15 - How can a program access private attributes of an ...

16 - Which of the following answers characterize ABAP O ...

17 - Mark the items that characterize some primary diff ...

18 - A public attribute 'color' is added to a superclas ...

19 - Where would the components of a class be defined ...

20 - Select the term used for Classes that can implemen ...

21 - What are the rules for Event parameters ...

22 - When redefining methods in a subclass, what is all ...

23 - Define Polymorphism ...

24 - Where are the methods of a class implemented ...

25 - Your program has registered several handler method ...

26 - A program needs to gain access to the public attri ...

27 - Class A provides friendship to Class B. Class B pr ...

28 - Pick the syntax for a functional method with only ...

29 - In object orientation, the term “USER” includes ...

30 - Initializing an object in a subclass requires that ...

31 - Identify the valid statements that will write out ...

32 - The syntax for static method specification ...

33 - What triggers an event ...

34 - What can be said about the visibility of attribute ...

35 - Mark the operator used to widen cast of a class ...

36 - Identify the statements that best describe the vis ...

37 - Changing the view of an instance of a class with m ...

38 - What happens when the Set Handler command is execu ...

39 - Mark the items that characterize the Methods of a ...

40 - Refer to the following code and indicate which sta ...

41 - Local Class lcl_course has been defined in a progr ...

42 - A MOVE_CAST_ERROR runtime error just occurred. Ide ...

43 - Refer to the following code and Select the VALID m ...

44 - Using example code below, choose the correct synta ...

45 - What can be said about the lifetime of an object ...

46 - Global Class cl_course has been defined using the ...

47 - What statement will request memory to be allocated ...

48 - Refer to the following code and identify the state ...

49 - Identify the Characteristics of a Final Class ...

50 - Using the UML modeling language for ABAP OO design ...

51 - Identify the behaviors of Abstract Classes. ...

52 - What is possible with a subclass in an inheritance ...

53 - In the context of polymorphism and interfaces, m ...

54 - Select the answers that apply to static methods an ...

55 - Identify the valid rule when calling public method ...

56 - Where is the visibility of class components define ...

57 - Identify the one addition that is not part of the ...

58 - Which statement will create an instance of a class ...

59 - Identify the line that contains the valid use of t ...

60 - What mechanism is used to define common components ...

61 - What is the only component that is implemented in ...

62 - In the context of relationship between Super and S ...

63 - Identify the requirements that determine when an o ...

64 - How do you call the method in a superclass that ha ...

65 - Mark the invalid attribute definitions ...

66 - What is true about classes and objects in Object O ...

67 - Identify the statement about Global Classes that i ...

1 of 67

class lcl_course definition.

public section.

data: name(15) type c value 'ABAPObjects101'.

class-data price type p value 100.

private section.

data: category(10) type C value 'Objects'.

endclass.

data: course1 type ref to lcl_course,

course_name type string,

course_price type p,

course_category type string.

**INSTANTIATION OMITTED **

(More than one answer is correct)

course_name = name

name can not be accessed unless course1 is instantiated

course_name = course1=>name.

course_name = course1->name.

course_price = lcl_course=>price.

2 of 67

Instantiation

Encapsulation

Inheritance

Polymorphism

3 of 67

剩余27页未读，继续阅读

clear all; close all; clc;tic its_option =2; hoise_option=1; =4;NT=2; SNRdBs=[0:2:20];sq05=sqrt(0.5); obe_target =500; BER_target =1e-3; taw_bit_len= 2592-6; nterleaving_num = 72; deinterleaving_num = 72; _frame = 1e8; or i_SNR=1:length(SNRdBs) sig_power=NI;SNRdB=SNRdBs(i_SNR); sigma2=sig_power10°(-SNRdB/10)noise_option;sigmal=sqrt(sigma2/2); nobe = 0; Viterbi_init for i_frame=1:1:N_frame I switch (bits_option) case (0】, bits=zeros(1,raw_bit_len); case (11, bits=ones(1,raw_bit_len); casef2), bits=randint(1,raw_bit_len); case (2), bits=randi(1,1,raw_bit_len)-1; end encoding_bits= convolution_encoder(bits);interleaved=[]; for i=l:interleaving_mum interleaved=[interleavedencoding_bits([i:interleaving_mum:end])];for tx_time-l:648 tx_bits=interleaved(1:8); interleaved(1:8)=[]; QAM16_symbol=QAM16_mod(tx_bits, 2);x(1,1) =QAM16_symbol(1);x(2,h)=QAM16_symbol(2);if rem(tx_time-1,81)==0 H = sq05(randn(2,2)+jrandn(2,2)); end y =Hx; noise = sqrt(sigma2/2)(randn(2,1)+jrandn(2,1)); if noise_option==1, y = y + noise;endW=inv(H'H+sigma2diag (ones(1,2)))H'; K_tilde =Wy; x_hat = QAM16_slicer(X_tilde, 2); temp_bit=[temp_bit QAM16_denapper(X_hat, 2)]; end deinterleaved=[]; for i=1:deinterleaving_rum deinterleaved=[deinterleaved temp_bit([i:deinterleaving_mum:end])];end received_bit=Viterbi_decode(deinterleaved) for EC_dummy=1:1:raw_bit_len, if nobe>=nobe_target, break; end end if (nobe>=nobe_target) break; end end BER(i_SNR)=nobe/((i_frame-1)raw_bit_len+EC_dummy);fprintf(’t%dt\t%1.4f\n', SNRdB,BER(i_SNR)); if BER(i_SMR)<BER_target, break; end end利用上述代码构建一个新的代码，实现BER绘图，使其分别绘制两幅BER图，分别为有噪声和无噪声时，bits-option三种情况的BER

BER_noise(i_SNR,2)=BER2; BER_noise(i_SNR,3)=BER3; if BER1 || BER2 || BER3 break; end end figure; semilogy(SNRdBs, BER_noise(:,1), 'r^-', SNRdBs, BER_noise(:,2), 'bo-', SNRdBs, BER_noise(:,3), '...

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