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2019雅虎校園招聘筆試題和面試題答案目(二)

更新:2023-09-21 04:12:55 高考升學(xué)網(wǎng)

Question 35. (單選)

  假如設(shè)treeView1=new TreeView(),TreeNode node=new TreeNode("根結(jié)點" ),則

  treeView1.Nodes.Add(node)返回的是一個 ()類型的值。——2

  1. TreeNode;  2. int;  3. string;  4. TreeView;

  Question 36. (單選)

  聲明一個委托public delegate int myCallBack(int x); 則用該委托產(chǎn)生的回調(diào)方法的原型應(yīng)該是——2

  1. void myCallBack(int x)   2. int receive(int num)

  3. string receive(int x)   4. 不確定的

  Question 37. (單選)

  關(guān)于ASP.NET中的代碼隱藏文件的描述正確的是——1

  1. Web窗體頁的程序的邏輯由代碼組成,這些代碼的創(chuàng)建用于與窗體交互。編程邏輯唯一與用戶界面不同的文件中。該文件稱作為“代碼隱藏”文件,假如用C#創(chuàng)建,該文件

  2. 項目中所有Web窗體頁的代碼隱藏文件都被編譯成.EXE文件

  3. 項目中所有的Web窗體頁的代碼隱藏文件都被編譯成項目動態(tài)鏈接庫(.dll)文件

  4. 以上都不正確

  Question 38. (單選)

  What compiler switch creates an xml file from the xml comments in the files in an

  assembly?——2

  1. /text   2. /doc

  3. /xml   4. /help

  Question 39. (單選)

  下面的代碼實現(xiàn)了設(shè)計模式中的什么模式——3

  public class A {

  private A instance;

  private A() {

  }

  public static A Instance {

  get

  {

  if ( A == null )

  A = new A();

  return instance;

  }

  }

  }

  1. Factory    2. Abstract Factory

  3. Singleton    4. Builder

Question 40. (單選)

  class Class1

  {

  public static int Count = 0;

  static Class1()

  {

  Count ;

  }

  public Class1()

  {

  Count ;

  }

  }

  Class1 o1 = new Class1();

  Class1 o2 = new Class1();

  請問,Class1.Count的值是多少?(3)

  1. 1    2. 2    3. 3    4. 4

  Question 41. (單選)

  abstract class BaseClass

  {

  public virtual void MethodA()

  {

  Console.WriteLine("BaseClass");

  }

  public virtual void MethodB()

  {

  }

  }

  class Class1: BaseClass

  {

  public void MethodA()

  {

  Console.WriteLine("Class1");

  }

  public override void MethodB()

  {

  }

  }

  class Class2: Class1

  {

  new public void MethodB()

  {

  }

  }

  class MainClass

  {

  public static void Main(string[] args)

  {

  Class2 o = new Class2();

  o.MethodA();

  }

  }

  請問,此程序輸出結(jié)果是:——3

  1. BaseClass    2. BassClass Class1

  3. Class1    4. Class1 BassClass

  Question 42. (單選)

  程序輸出了什么?——1

  public static void Main(string[] args)

  {

  int i = 2000;

  object o = i;

  i = 2001;

  int j =(int) o;

  Console.WriteLine("i={0},o={1}, j={2}",i,o,j);

  }

  1. i=2001,o=2000,j=2000    2. i=2001,o=2001,,j=2001

  3. i=2000,o=2001,,j=2000    4. i=2001,o=2000,j=2001

  Question 43. (多選)

  您要創(chuàng)建ASP.NET應(yīng)用程序用于運(yùn)行AllWin公司內(nèi)部的Web站點,這個應(yīng)用程序包含了50個頁面。您想

  要配置這個應(yīng)用程序以便當(dāng)發(fā)生一個HTTP代碼錯誤時它可以顯示一個自定義的錯誤頁面給用戶。您想要花

  最小的代價完成這些目標(biāo),您應(yīng)該怎么做?(多選)——14

  1. 在這個應(yīng)用程序的Global.asax文件中創(chuàng)建一個Application_Error過程去處理ASP.NET代碼錯誤。

  2. 在這個應(yīng)用程序的Web.config文件中創(chuàng)建一個applicationError節(jié)去處理ASP.NET代碼錯誤。

  3. 在這個應(yīng)用程序的Global.asax文件中創(chuàng)建一個CustomErrors事件去處理HTTP錯誤。

  4. 在這個應(yīng)用程序的Web.config文件中創(chuàng)建一個CustomErrors節(jié)去處理HTTP錯誤。

  Question 44. (單選)

  如下程序的運(yùn)行結(jié)果是:——1

  public abstract class A

  {

  public A()

  {

  Console.WriteLine(A);

  }

  public virtual void Fun()

  {

  Console.WriteLine("A.Fun()");

  }

  }

  public class B: A

  {

  public B()

  {

  Console.WriteLine(B);

  }

  public new void Fun()

  {

  Console.WriteLine("B.Fun()");

  }

  public static void Main()

  {

  A a = new B();

  a.Fun();

  }

  }

  1. A B A.Fun()    2. A B B.Fun()

  3. B A A.Fun()    4. B A B.Fun()

  Question 45. (單選)

  Which of these string definitions will prevent escaping on backslashes in C#?——3

  1. string s = #”n Test string”;

  2. string s = “’n Test string”;

  3. string s = @”n Test string”;

  4. string s = “n Test string”;

  Question 46. (單選)

  Which of the following operations can you NOT perform on an ADO.NET DataSet?——4

  1. A DataSet can be synchronised with a RecordSet.

  2. A DataSet can be synchronised with the database.

  3. A DataSet can be converted to XML.

  4. You can infer the schema from a DataSet

Question 47. (單選)

  In Object Oriented Programming, how would you describe encapsulation?——4

  1. The conversion of one type of object to another.

  2. The runtime resolution of method calls.

  3. The exposition of data.

  4. The separation of interface and implementation.

  Question 48. (單選)

  How does assembly versioning in .NET prevent DLL Hell?——2

  1. The runtime checks to see that only one version of an assembly is on the machine at any one time.

  2. .NET allows assemblies to specify the name AND the version of any assemblies they need to run.

  3. The compiler offers compile time checking for backward compatibility.

  4. It doesn’t.

  Question 49. (單選)

  三種常用的字符串判空串方法:

  1: bool isEmpty = (str.Length == 0);

  2: bool isEmpty = (str == String.Empty);

  3: bool isEmpty = (str == "");

  哪種方法最快?——1

  1. 1    2. 2    3. 3

  Question 50. (單選)

  public sealed class SampleSingleton1

  {

  private int m_Counter = 0;

  private SampleSingleton1()

  {

  Console.WriteLine(""初始化SampleSingleton1。"");

  }

  public static readonly SampleSingleton1 Singleton = new SampleSingleton1();

  public void Counter()

  {

  m_Counter ;

  }

  }

  以上代碼實現(xiàn)了設(shè)計模式中的哪種模式?——3

  1. 原型   2. 抽象工廠   3. 單鍵   4. 生成器

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