Technology Questions

Q:

Explain how a .NET application is compiled and executed?

Answer

Any code written in any .NET complaint languages when compiled, converts into MSIL (Microsoft Intermediate Language) code in form of an assembly through CLS, CTS. IL is the language that CLR can understand. On execution, this IL is converted into binary code by CLR’s just in time compiler (JIT) and these assemblies or DLL are loaded into the memory.

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Subject: .NET

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Q:

How do you pass a variable by value?

Answer Just like in C++, put an ampersand in front of it, like $a = &$b
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Subject: PHP

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Q:

Can a class be declared as protected?

Answer A class can't be declared as protected. only methods can be declared as protected.
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Subject: Java

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Q:

What are the prime responsibilities of Data Integration Administrator?

Answer

- Scheduling and executing the batch jobs.


- Configuring, starting and stopping the real-time services


- Adapters configuration and managing them.


- Repository usage, Job Server configuration.


- Access Server configuration.


- Batch job publishing.


- Real-time services publishing through web services.

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Q:

What is a Trigger? Explain Types of PL/SQL Triggers.

Answer

A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database.


Syntax:


CREATE OR REPLACE TRIGGER [Trigger Name] [Before / After / Instead Of]


ON [schema].[table]


<PL/SQL subprogram>


 


Types of PL/SQL triggers : 


> Row trigger          - The trigger fires for each ROW affected.


> Statement trigger - The trigger is fired once when the condition is matched


> Before and After trigger - The BEFORE trigger run the trigger action before the insert, update or delete statement. The AFTER trigger runs the trigger action after the insert, update or delete statement is executes.

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Subject: Oracle

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Q:

What File system is supported by Windows XP?

Answer

Windows XP supports four major file systems: FAT12, FAT16, FAT32 and NTFS. This means that Windows XP can be installed on these file systems. The use of NTFS is preferred especially when using a bigger hard drive space.

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Q:

What are pass by reference and pass by value ?

Answer

When an object is passed by value, this means that a copy of the object is passed. Thus, even if changes are made to that object, it doesn’t affect the original value. 


When an object is passed by reference, this means that the actual object is not passed, rather a reference of the object is passed. Thus, any changes made by the external method, are also reflected in all places.

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Subject: Java

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Q:

What is the return type of the main() method?

Answer Main() method doesn't return anything hence declared void.
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Subject: Java

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