Interview Questions

Q:

Which of the following is not the member of class?

A) Virtual function B) Static function
C) Friend function D) Const function
 
Answer & Explanation Answer: C) Friend function

Explanation:
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Filed Under: C++
Job Role: Analyst , Database Administration , IT Trainer

19 10626
Q:

What is a KPO? What Is the difference between call center and a KPO?

Answer

KPO stands for Knowledge Process Outsourcing. It is a subset of call centers. The ways in which a KPO differs from a call center are :


1. In KPO knowledge and information related work is carried out.


2. Staff requirement is for highly skilled people.


3. Is mainly related to support and not sales.


4. Carries out works mainly for research and analysis process besides support.

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Subject: Call Center

12 10599
Q:

Which design patterns benefit from the multiple inheritance?

A) Adapter and observer pattern B) Code pattern
C) Glue pattern D) None of these
 
Answer & Explanation Answer: A) Adapter and observer pattern

Explanation:
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Q:

What type of inheritance that PHP supports? Provide an example.

Answer

PHP supports single level inheritance.


Inheriting a class would mean creating a new class with all functionality of the existing class in addition to some more. The created class is called as a subclass of the parent class. Parent is a keyword which we use to access members of a parent class. Inheritance is usually defined by using the keyword “Extend”. $this is used a reference to the calling object. Inheritance avoids redundancy of code.


Example:


Class employee extends manager : Here Employee is a subclass of manager.


Echo $this->name can be used to echo variable name of the parent class.

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Subject: PHP

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Q:

A UNION query is which of the following?

A) Combines the output from multiple queries and does not include the same number of columns. B) Combines the output from multiple queries and must include the same number of columns.
C) Combines the output from no more than two queries and does not include the same number of columns. D) Combines the output from no more than two queries and must include the same number of columns.
 
Answer & Explanation Answer: B) Combines the output from multiple queries and must include the same number of columns.

Explanation:

A UNION query combines the output from multiple queries and must include the same number of columns.

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Filed Under: SQL
Job Role: Analyst , Database Administration , IT Trainer

2 10535
Q:

What is the Standard Template Library?

Answer

A library of container templates approved by the ANSI committee for inclusion in the standard C++ specification. A programmer who then launches into a discussion of the generic programming model, iterators, allocators, algorithms, and such, has a higher than average understanding of the new technology that STL brings to C++ programming

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Subject: C++
Job Role: Software Architect

2 10512
Q:

Which of the following type of data member can be shared by all instances of its class?

A) Public B) Inherited
C) Static D) None
 
Answer & Explanation Answer: C) Static

Explanation:

Static members are shared by all the instances of the class

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Filed Under: C++

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Q:

How can we display the output directly to the browser?

Answer

To be able to display the output directly to the browser, we have to use the special tags <?= and ?>.

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Subject: PHP

24 10461