Which two statements are true regarding the creation of a default constructor？（） A、 The default constructor initializes method variables.B、 The compiler always creates a default constructor for every class.C、 The default constructor invokes the no-paramet

题目

Which two statements are true regarding the creation of a default constructor？（） 

  • A、 The default constructor initializes method variables.
  • B、 The compiler always creates a default constructor for every class.
  • C、 The default constructor invokes the no-parameter constructor of the superclass.
  • D、 The default constructor initializes the instance variables declared in the class.
  • E、 When a class has only constructors with parameters， the compiler does not create a default constructor.
相似考题

1.有如下程序:includeUsing namespace std;Class Demo{public:Demo(){cout有如下程序： #include＜iostream.h＞ Using namespace std； Class Demo { public： Demo(){ cout＜＜“default constructor\n”；} Demo(const Demo &x){ cont＜＜“copy constructor\n”；} }； Demo usercode(Demob){Demo c(b)；return c;} int main() {A．1和1B．1和2C．2和3D．2和4

2.以下程序的输出结果是_____。 include class object {private:int val; public:objec以下程序的输出结果是_____。include＜iostream.h＞class object{ private:int val;public:object( ) ;object(int i) ;～object( ) ;};object: :object( ){ val＝0;cout ＜ ＜ "Default constructor for object" ＜ ＜ endl;}object: :object(int i){ val＝i;cout ＜ ＜ "Constructor for object" ＜ ＜ val ＜ ＜ endl;}object: :～object( ){ cout ＜ ＜ "Destructor for object" ＜ ＜ val ＜ ＜ endl;}class container{ private:object one;object two;int data;public:container( ) ;container(int i,int j,int k) ;～container( ) ;};container: :container( ){ data＝0;cout ＜ ＜ "Default constructor for container" ＜ ＜ endl;}container: :container(int i,int j,int k) :two(i) ,one(j){ data＝k;cout ＜ ＜ "Constructor for container" ＜ ＜ endl;}container: :～container( ){ cout ＜ ＜ "Destructor for container" ＜ ＜ endl;}void main( ){ container anObj(5,6,10) ;}

3.Which two statements are true regarding the system－default security policy [edit security policies default－policy]?()(Choose two.)A. Traffic is permitted from the trust zone to the untrust zone.B. Intrazone traffic in the trust zone is permitted.C. All traffic through the device is denied.D. The policy is matched only when no other matching policies are found.

4.The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command? ()(Choose two.)A. The job is enabled by default after creationB. The job is automatically dropped after the end dateC. The job executes with the privileges of the user SYSD. The globalization environment that exists at the time of the job creation prevails at the job runs

更多“Which two statements are true regarding the creation of a default constructor？（） A、 The default constructor initializes method variables.B、 The compiler always creates a default constructor for every class.C、 The default constructor invokes the no-paramet”相关问题

  • 第1题：

    Which two statements are true about precedence values in policy?() (Choose two.)

    A. 1 is the default precedence.

    B. A lower number is preferred.

    C. A higher number is preferred.

    D. 100 is the default precedence.


    参考答案：B, D

  • 第2题：

    C# provides, by default a parameterless constructor. If I write a constructor that takes a string as a parameter, but want to keep the parameterless constructor. How many constructors should I write?

    (C#提供默认构造函数(不带参数),如果我写了一个带有一个string类型参数的构造函数,但是又想保留不带参数的构造函数,那么我需要写多少个构造函数)


    正确答案：
     

  • 第3题：

    Which three statements are true？（）

    • A、 The default constructor initializes method variables.
    • B、 The default constructor has the same access as its class.
    • C、 The default constructor invoked the no-arg constructor of the superclass.
    • D、 If a class lacks a no-arg constructor， the compiler always creates a default constructor. 
    • E、 The compiler creates a default constructor only when there are no other constructors for the class.

    正确答案:B,C,E

  • 第4题：

    In which two cases does the compiler supply a default constructor for class A？（）  

    • A、 class A{}
    • B、 class A { public A（）{} }
    • C、 class A { public A（int x）{} }
    • D、 class Z {} class A extends Z { void A（）{} }

    正确答案:A,D

  • 第5题：

    public class Test {} What is the prototype of the default constructor？（）  

    • A、 Test（）
    • B、 Test（void）
    • C、 public Test（）
    • D、 public Test（void）
    • E、 public void Test（）

    正确答案:C

  • 第6题：

    Which two statements are true regarding route preference?（）

    • A、Lower preference values are more preferred than higher preference values.
    • B、You can modify the default preference values for any of the routing information sources.
    • C、By default, a static route is more preferred than a RIP route.
    • D、A static route is always preferred over a direct route.

    正确答案:A,C

  • 第7题：

    Which two statements are true regarding the system-default security policy [edit security policies default-policy]?（）(Choose two.)

    • A、Traffic is permitted from the trust zone to the untrust zone.
    • B、Intrazone traffic in the trust zone is permitted.
    • C、All traffic through the device is denied.
    • D、The policy is matched only when no other matching policies are found.

    正确答案:C,D

  • 第8题：

    多选题
    Which two statements are true regarding route preference?（）
    A

    Lower preference values are more preferred than higher preference values.

    B

    You can modify the default preference values for any of the routing information sources.

    C

    By default, a static route is more preferred than a RIP route.

    D

    A static route is always preferred over a direct route.


    正确答案： C,B
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements are true regarding L2TP? （）(Choose two.)
    A

    Tunnels are initiated by the LAC

    B

    Tunnels are initiated by the LNS

    C

    By default, subscriber authentication occurs on the LNS

    D

    By default, subscriber authentication occurs on the LAC


    正确答案： C,D
    解析： 暂无解析

  • 第10题：

    单选题
    public class Test {} What is the prototype of the default constructor？（）
    A

     Test（）

    B

     Test（void）

    C

     public Test（）

    D

     public Test（void）

    E

     public void Test（）


    正确答案： D
    解析： The correct answer to this question is C. The default constructor always takes the same access of the class. In this case, the class is public and so does the default constructor. 

  • 第11题：

    多选题
    Which two statements are true regarding the creation of a default constructor？（）
    A

    The default constructor initializes method variables.

    B

    The compiler always creates a default constructor for every class.

    C

    The default constructor invokes the no-parameter constructor of the superclass.

    D

    The default constructor initializes the instance variables declared in the class.

    E

    When a class has only constructors with parameters， the compiler does not create a default constructor.


    正确答案： B,A
    解析： 暂无解析

  • 第12题：

    ( 难度：中等)下列关于constructor说法正确的有（）。
    A.constructor在一个对象被new时执行
    B.constructor必须与class同名，但方法不能与class同名
    C.class中的constructor不可省略
    D.一个class只能定义一个constructor

    答案:A

  • 第13题：

    Which two statements are true regarding L2TP? ()(Choose two.)

    A. Tunnels are initiated by the LAC

    B. Tunnels are initiated by the LNS

    C. By default, subscriber authentication occurs on the LNS

    D. By default, subscriber authentication occurs on the LAC


    参考答案：A, C

  • 第14题：

    class A {  A（） { }  }  class B extends A {  }  Which two statements are true？（）

    • A、 Class B’s constructor is public.
    • B、 Class B’s constructor has no arguments.
    • C、 Class B’s constructor includes a call to this（）.
    • D、 Class B’s constructor includes a call to super（）.

    正确答案:B,D

  • 第15题：

    Which two statements are true regarding the creation of a default constructor？（）   

    • A、 The default constructor initializes method variables.
    • B、 The default constructor invokes the no-parameter constructor of the superclass.
    • C、 The default constructor initializes the instance variables declared in the class.
    • D、 If a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.
    • E、 The compiler creates a default constructor only when there are no other constructors for the class.

    正确答案:C,E

  • 第16题：

    Which two statements about the best effort model for QoS are true？（）

    • A、delay sensitive packets are given preferential treatment
    • B、the default policy identifies a delay sensitive class and default class
    • C、the default policy identifies a delay sensitive class， best effort class， and default class
    • D、the model is highly scalable
    • E、the model is still predominant on the internet F the model provides guaranteed service

    正确答案:D,E

  • 第17题：

    Which two statements are true regarding L2TP? （）(Choose two.)

    • A、Tunnels are initiated by the LAC
    • B、Tunnels are initiated by the LNS
    • C、By default, subscriber authentication occurs on the LNS
    • D、By default, subscriber authentication occurs on the LAC

    正确答案:A,C

  • 第18题：

    Which two statements are true about precedence values in policy?（） (Choose two.)

    • A、1 is the default precedence.
    • B、A lower number is preferred.
    • C、A higher number is preferred.
    • D、100 is the default precedence.

    正确答案:B,D

  • 第19题：

    Which of the following statements is true regarding the initialization parameter DIAGNOSTIC_DEST？（）   The default value is the value of the environment variable $ORACLE_HOME； if $ORACLE_HOME isn’t set  

    • A、 then the default is set to $ORACLE_BASE  The default value is the value of the environment variable $ORACLE_BASE； if $ORACLE_BASE isn’t set，
    • B、 then it is set to $ORACLE_HOME
    • C、 DIAGNOSTIC_DEST is always equal to $ORACLE_HOME
    • D、 DIAGNOSTIC_DEST is always equal to $ORACLE_BASE

    正确答案:B

  • 第20题：

    多选题
    Which three statements are true？（）
    A

    The default constructor initializes method variables.

    B

    The default constructor has the same access as its class.

    C

    The default constructor invoked the no-arg constructor of the superclass.

    D

    If a class lacks a no-arg constructor， the compiler always creates a default constructor.

    E

    The compiler creates a default constructor only when there are no other constructors for the class.


    正确答案： E,D
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements about the best effort model for QoS are true？（）
    A

    delay sensitive packets are given preferential treatment

    B

    the default policy identifies a delay sensitive class and default class

    C

    the default policy identifies a delay sensitive class， best effort class， and default class

    D

    the model is highly scalable

    E

    the model is still predominant on the internet F the model provides guaranteed service


    正确答案： D,A
    解析： 暂无解析

  • 第22题：

    多选题
    Which two statements are true about precedence values in policy?（） (Choose two.)
    A

    1 is the default precedence.

    B

    A lower number is preferred.

    C

    A higher number is preferred.

    D

    100 is the default precedence.


    正确答案： D,C
    解析： 暂无解析

  • 第23题：

    多选题
    Which two statements are true regarding the creation of a default constructor？（）
    A

    The default constructor initializes method variables.

    B

    The default constructor invokes the no-parameter constructor of the superclass.

    C

    The default constructor initializes the instance variables declared in the class.

    D

    If a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor.

    E

    The compiler creates a default constructor only when there are no other constructors for the class.


    正确答案： E,B
    解析： 暂无解析

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