Interview Questions

Q:

Are objects passed by value or by reference?

Answer Everything is passed by value.
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Subject: PHP

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Q:

How can record locking be achieved in those DB2 versions which do not support it?

Answer

It can be done by setting the record length’s size to more than half of the page’s size.

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Q:

Which function would you use to insert a record into a database?

Answer

The dba_insert() function adds a record to a database.

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Subject: PHP

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Q:

What is the difference between a constructor and a method?

Answer

A constructor is a member function of a class that is used to create objects of that class. It has the same name as the class itself, has no return type, and is invoked using the new operator. We cannot invoke a constructor directly.


 


A method is an ordinary member function of a class. It has its own name, a return type (which may be void), and is invoked using the dot operator.

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Subject: Java

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Q:

I do not want my class to be inherited by any other class. What should i do?

Answer You should declared your class as final. But you can't define your class as final, if it is an abstract class. A class declared as final can't be extended by any other class.
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Subject: Java

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Q:

The income and substitution effects account for

A) the upward sloping curve B) the downward sloping curve
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) the downward sloping curve

Explanation:
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Filed Under: Bank Interview
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

Echo vs print statement

Answer

echo() and print() are language constructs in PHP, both are used to output strings. The speed of both statements is almost the same.


echo() can take multiple expressions whereas print cannot take multiple expressions.


Print return true or false based on success or failure whereas echo doesn't return true or false.

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Subject: PHP

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Q:

What is a BI dashboard?

Answer

Dashboards are real-time business intelligence interfaces. They allow a huge amount of data to be read in a single interface in order to analyse the success or failure of the business or project in question

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