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programming languages Online Quiz - 114

Description: programming languages Online Quiz - 114
Number of Questions: 20
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Tags: programming languages
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How can you sort a ArrayList?

  1. By creating an implementation of the java.lang.Comparable interface.

  2. java.util.Collections.sort()

  3. java.utils.Arrays.sort()

  4. By creating an implementation of the java.lang.Comparator interface.


Correct Option: A,B,D

Which is true about HashMap and Hashtable?

  1. Both HashMap and Hashtable will allow null as key and value.

  2. HashMap is not Synchronized and Hashtable is Synchronized.

  3. The iterator in the HashMap is fail-safe, but enumerator for the Hashtable is not fail-safe.

  4. Hashtable will be faster than HashMap.


Correct Option: B,C

Which is/are true?

  1. 'Composition' and 'Aggregation' both are 'association'.

  2. 'Composition' is a stronger form of 'Aggregation'.

  3. 'Aggregation' is a stronger form of 'Composition'.

  4. A 'Composition' adds a lifetime responsibility to 'Aggregation'.


Correct Option: A,B,D

What is a daemon thread?

  1. main thread is a daemon thread.

  2. garbage collector thread is a daemon thread.

  3. All user defined threads are daemon thread.

  4. None of above.


Correct Option: B

A class is a subclass of itself?

  1. True

  2. False


Correct Option: A

null is a keyword?

  1. True

  2. False


Correct Option: B

Select the output of the statement < form method=post action=”test.aspx” >

  1. Transfers all the form data to test.aspx with HTTP headers

  2. Transfers all the form data to test.aspx with out HTTP headers

  3. Calls Post method on test.aspx

  4. Transfers all the form data from test.aspx to others


Correct Option: A

What is the Full Form of WSDL ?

  1. Web System Description Language

  2. Web Service Description Language

  3. Web Service Definition Language

  4. Web System Definition Language


Correct Option: B

Which Namespace allows us to implement the form authentication ?

  1. System.Web.Ui.Forms.Security

  2. System.Web.Configuration

  3. System.Web.Services

  4. System.Web.Security


Correct Option: D

How do you explicitly kill a user’s session ?

  1. Session.Close ( )

  2. Session.Discard ( )

  3. Session.Abandon ( )

  4. Session.Exit ( )


Correct Option: C

What Namespace does the Web page belong in the .NET Framework class hierarchy?

  1. System.Web.UI.Page

  2. System.Windows.UI.Page

  3. System.Web.Page

  4. System.Windows.Page


Correct Option: A

The number of forms that can be added to a aspx page is

  1. 1

  2. 2

  3. 3

  4. More than 3


Correct Option: A

JSON is

  1. Superset of JavaScript

  2. Subset of Javascript

  3. Not related to Javascript

  4. Union of Java and Javascript


Correct Option: B

JSON is a text format that is completely language independent

  1. True

  2. False


Correct Option: A

Brackets used in JSON are

  1. Angled

  2. Square

  3. Round

  4. Squiggly


Correct Option: B,D

JSON was invented by

  1. Smith Jackson

  2. Brian McRowell

  3. Douglas Crockford

  4. Michale Scwzhenar


Correct Option: C

What JSON stands for?

  1. Java Objects Notation

  2. JavaScript Object Notation

  3. JavaScript Object Oriented Notation

  4. Java Objects Node


Correct Option: B

PHP is a widely used -------- language

  1. mark up

  2. object based

  3. content based

  4. general purpose


Correct Option: D

I defined an equals method, but Hashtable ignores it. Why?

  1. You forgot the hashCode method

  2. You didn't handle circular references properly

  3. Could be any / both of above

  4. None of above


Correct Option: C

What an interface could be

  1. private

  2. protected

  3. Both

  4. None


Correct Option: C
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