C# and Java Programming Concepts

Quiz covering fundamental programming concepts in C#/.NET and Java, including reflection, collections, OOP principles, bit operations, and JSP tag libraries

13 Questions Published

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Questions

Question 1 Multiple Choice (Multiple Answers)

Which of the elements defined within the taglib element of taglib descriptor file are required. Select the two correct answers.

tlib-version
short-name
uri
display-name

Question 2 Multiple Choice (Multiple Answers)

Which of the elements defined within the taglib element of taglib descriptor file are required. Select the two correct answers.

name
description
validator
tag-class
display-name

Question 3 Multiple Choice (Multiple Answers)

Name the element within the tag element that defines the name of the class that implements the functionality of tag. Select the one correct answer.

class-name
tag
class
tag-class
tei-class

Question 4 Multiple Choice (Multiple Answers)

Which of the following will compile without error.

import java.awt.*;package Mypackage;class Myclass {}
package MyPackage;import java.awt.*;class MyClass{}
/*This is a comment /package MyPackage;import java.awt.;class MyClass{}
class Myclass {};import java.awt.*;package Mypackage;

Question 5 Multiple Choice (Multiple Answers)

Which of the following are legal identifiers.

2variable
variable2
_whatavariable
3
$anothervar
#myvar

Question 6 Multiple Choice (Single Answer)

What will happen if you try to compile and run the following code? public class Q { public static void main(String argv[]){ int anar[]=new int[]{1,2,3}; System.out.println(anar[1]); }}

1
Error anar is referenced before it is initialized.
2
Error: size of array must be defined.

Question 7 Multiple Choice (Multiple Answers)

Which of the following statements are true?

System.out.println( -1 >>> 2);will output a result larger than 10
System.out.println( -1 >>> 2); will output a positive number
System.out.println( 2 >> 1); will output the number 1
System.out.println( 1 <<< 2); will output the number 4

Question 8 Multiple Choice (Single Answer)

Given the following declarations String s1=new String("Hello")String s2=new String("there");String s3=new String(); Which of the following are legal operations?

s3=s1 + s2;
s3=s1-s2;
s3=s1 & s2;
s3=s1 && s2

Question 9 Multiple Choice (Single Answer)

If you want to use USER32.DLL in your program, which namespace you should use:

System.Collections.Generic
System.Reflection
Microsoft.Office.Interop
None of the above

Question 10 Multiple Choice (Single Answer)

When you need to perform complex calculations or access external resources in SQL Server 2005, which one of the following programming methods do you use?

SQL Server Management Studio
CLR User Defined Type
CLR Stored Procedure
T-SQL View

Question 11 Multiple Choice (Single Answer)

Consider following statements: 1. System.Collections.ArrayList can store values of only single data type 2. System.Collections.ArrayList can store values of multiple data types 3. System.Collections.Generic.List can store values of multiple datatypes 4. System.Collections.Generic.List can store values of only single data type Which of the above is false:

Only 2
Both 1 and 3
4
Both 2 and 4

Question 12 Multiple Choice (Single Answer)

Which of the following is true:

It is possible for a single class to implement multiple interfaces
It is possible for a class to inherit from multiple classes
It is possible for a class to inherit from a Sealed class
All of above

Question 13 Multiple Choice (Single Answer)

Which of the following is not true about Reflection (System.Reflection and inherited classes):

To get information about event-handler
To get or set property values
Classes in other namespace can use reflection to access data and to determine which fields to persist
None of the above

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