Interview Questions

Q:

Why is the main() method declared static?

Answer

main() method is called by the JVM even before the instantiation of the class, hence it is declared as static.

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Subject: Java

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Q:

Difference between a query and a statement in SQL?

Answer

An SQL statement is a string of characters that conforms to the syntax and format specified in the international standard.


A query is a statement that returns a record-set.

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Subject: SQL

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Q:

What is the difference between the INTO and the SET option in the EXEC CICS RECEIVE MAP command?

Answer

The INTO option moves the information in the TIOA into the reserved specified area, while the SET option simply returns the address of the TIOA to the specified BLL cell or address of a linkage-section.


 

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Q:

What is PHP?

Answer

PHP: Hypertext Preprocessor is open source server-side scripting language that is widely used for web development. PHP scripts are executed on the server. PHP allows writing dynamically generated web pages efficiently and quickly. The syntax is mostly borrowed from C, Java and perl. PHP is free to download and use.


 

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Subject: PHP

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Q:

What is inheritance?

Answer

Inheritance is the ability to create new classes based on existing classes. It is useful to reuse existing code.

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Q:

What do you think about the challenges faced by a Business Analyst ?

Answer

Change management is the biggest challenge in each and every industry. After requirements stage when development is started client will come-up with some new changes or enhancements. 


Cross departmental or cross team management – like conflict management between teams. Also individuals. This requires soft skills and smartness. 


Communication problems – In real time this can happen. You might be good in speaking and understanding the English language. BUT sometimes it happens like Different people across the globe speak different style of English. In USA itself Mexico people speak English differently. Romans speak different English. So at initial level to understand the accent can be a challenge but after some time you will become perfect. 

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Q:

Client code having direct access to internal data is called

A) Encapsulation B) DataHiding
C) Polymorphism D) DataAbstraction
 
Answer & Explanation Answer: B) DataHiding

Explanation:

Client code must use setters and getters to access internal data in DataHiding

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Filed Under: Java

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Q:

AND, OR and NOT are examples of

A) Clauses B) Boolean operators
C) Conjuctive operators D) Exclusive operators
 
Answer & Explanation Answer: B) Boolean operators

Explanation:
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