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programming languages Online Quiz - 74

Description: programming languages Online Quiz - 74
Number of Questions: 20
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Tags: programming languages
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If a catch statement is written to catch exception objects of a base class type, it can also catch all _____ derived from that base class

technology programming languages

  1. Exceptions for objects

  2. Objects of classes

  3. Arguments

  4. Errors

Show answer
Correct Option: A

Association in UML can be represented by:

technology programming languages

  1. Only with a double line between base class & derived classes

  2. A plane line with no shape on either end

  3. A line with an arrow-head pointing in direction of parent or superclass

  4. Diamond shape between classes

Show answer
Correct Option: C

Suppose that the Test class does not have an overloaded assignment operator. What happens when an assignment a=b; is given for two Test objects a and b?

technology programming languages

  1. The automatic assignment operator is used

  2. The copy constructor is used

  3. Compiler error

  4. Run-time error

Show answer
Correct Option: B

Peer-to-peer relationship is a type of _________.

technology programming languages

  1. Association

  2. Aggregation

  3. Link

  4. None of these options

Show answer
Correct Option: A

Which of the following are good reasons to use an object oriented language.

technology programming languages

  1. You can define your own data types

  2. An object oriented program can be taught to correct its own errors

  3. It is easier to conceptualize an object oriented program

  4. You can define your own data types and It is easier to conceptualize an object oriented program

Show answer
Correct Option: D

AI Explanation

To answer this question, we need to understand the benefits of using an object-oriented language. Let's go through each option to determine which ones are good reasons to use an object-oriented language:

Option A) You can define your own data types - This option is a good reason to use an object-oriented language. Object-oriented languages allow you to create and define your own data types, which can help you model real-world entities or abstract concepts more effectively.

Option B) An object-oriented program can be taught to correct its own errors - This option is not a good reason to use an object-oriented language. The ability to correct errors in a program depends on the specific development practices and tools being used, rather than on the choice of programming paradigm (such as object-oriented).

Option C) It is easier to conceptualize an object-oriented program - This option is a good reason to use an object-oriented language. Object-oriented programming provides a natural way to organize and structure code by modeling the problem domain as a collection of interacting objects. This can make it easier for programmers to understand and conceptualize the program.

Option D) You can define your own data types and It is easier to conceptualize an object-oriented program - This option is a good reason to use an object-oriented language. As explained above, both of these reasons (defining your own data types and easier conceptualization) are advantages of using object-oriented languages.

Based on the analysis above, the correct answer is D.

What is the result of this code? myObj *foo = operator new(sizeof(foo));

technology programming languages

  1. That's not legal syntax!

  2. foo has memory allocated for it, but is not constructed

  3. foo has memory allocated for it, and is fully constructed

  4. None of the above

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Correct Option: A

What is wrong with the following code? int * x = (int *) malloc(100 * sizeof(int)); x = realloc(x, sizeof(int) * 200);

technology programming languages

  1. If realloc fails, then the original memory is lost

  2. Nothing, realloc is guaranteed to succeed (by returning the original pointer)

  3. Nothing, realloc frees the original memory passed to it

  4. None of the above

Show answer
Correct Option: A

An application uses encapsulation to achieve ________
technology programming languages

  1. Information hiding

  2. Minimizing interdependencies among modules

  3. Make implementation independent

  4. All of these options

Show answer
Correct Option: A

When a class uses dynamic memory, what member functions should be provided by the class?

technology programming languages

  1. An overloaded assignment operator

  2. The copy constructor

  3. A destructor

  4. All of these options

Show answer
Correct Option: C

Which are the main three features of OOP language?

technology programming languages

  1. Data Encapsulation, Inheritance & Exception handling

  2. Inheritance, Polymorphism & Exception handling

  3. Data Encapsulation, Inheritance & Polymorphism

  4. Overloading, Inheritance & Polymorphism

Show answer
Correct Option: C

Reusability can be achieved through?

technology programming languages

  1. Inheritance

  2. Composition

  3. Association

  4. All of these options

Show answer
Correct Option: C

We can write any C# code on the code behind of workflow. True or false

technology programming languages

  1. True

  2. False

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Correct Option: B

How to pass data to a workflow

technology programming languages

  1. using Bookmark resumption

  2. Using InArgument

  3. Using variables

  4. using bookmark resumption and using InArgument

  5. None of this

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Correct Option: D

How to access an outargument in the designer

technology programming languages

  1. using variable assigned to the OutArgument

  2. Using InArgument assigned to the OutArgument

  3. It is not possible

  4. None of the above

Show answer
Correct Option: A

How to resume a bookmark

technology programming languages

  1. workflowApplication.ResumeBookmark(bookmarkName, null)

  2. workflowApplication.ResumeBookmark(bookmarkName)

  3. workflowInvoker.ResumeBookmark(bookmarkName, null)

  4. workflowInvoker.ResumeBookmark(bookmarkName)

Show answer
Correct Option: A

Which technologies are used in Activity designer

technology programming languages

  1. WPF

  2. Windows

  3. Silverlight

  4. workflow

Show answer
Correct Option: A

How to define a designer for an activity

technology programming languages

  1. Add the Designer attribute to the Activity class

  2. Assign ActivityDesigner name in the Activity Constructor

  3. By overriding cacheMetadata

  4. None of the above

Show answer
Correct Option: A

Whether InOutarguments are supported in WF4.0

technology programming languages

  1. True

  2. False

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Correct Option: B

Activitydesigner is a Xaml file with no code behind

technology programming languages

  1. True

  2. False

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Correct Option: B

Which method in custom activity contains the execution logic

technology programming languages

  1. Exec

  2. Execute

  3. CacheMetadata

  4. beginExec

Show answer
Correct Option: B
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