Technology Questions

Q:

What do you mean by early binding?

Answer

Early binding refers to the events that occur at compile time. Early binding occurs when all information needed to call a function is known at compile time. Examples of early binding include normal function calls, overloaded function calls, and overloaded operators. The advantage of early binding is efficiency.

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Subject: C++

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Q:

In HTML 5 we do not need DTD why?

Answer

HTML 5 does not use SGML or XHTML it’s completely a new thing so you do not need to refer DTD. For HTML 5 you just need to put the below doctype code which makes the browser identify that this is a HTML 5 document.

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Q:

What is autostatus in IDMS?

Answer

Autostatus is a protocol mode which causes the expansion of each DML statement to include a 'perform IDMS-Status' statement.

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Q:

Explain about various caches available in Data Integrator

Answer

  •  NO_CACHE – It is used for not caching values.

  •  PRE_LOAD_CACHE – Result column preloads and compares the column into the memory, prior to executing the lookup.

  •  PRE_LOAD_CACHE is used when the table can exactly fit in the memory space.

  •  DEMAND_LOAD_CACHE – Result column loads and compares the column into the memory when a function performs the execution.

  •  DEMAND_LOAD_CACHE is suitable while looking up the highly repetitive values with small subset of data.

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Q:

Explain the basic difference between 32-bit and 64-bit operating system?

Answer

A 32 bit processor is faster than a 64 bit processor, 64 bit processors are very commonly used that you can find it easily in any home pc but the main difference is the hardware you are having on your machine. For 32 bits there isn't any need of any wide main bus to carry 32 bits at a time but for 64 bits its must that you should have a wider bus to carry 64bits.

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Q:

How do we measure progress in Data Integration?

Answer

Look for the existence of the following items:


- Generic Data Models


- An Enterprise Data Platform


- Identify the Data Sources


- Selection of a MDM Product


- Implementation of a Customer Master Index or appropriate alternative

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Q:

What’s the difference between htmlentities() and htmlspecialchars()?

Answer

Htmlentities() converts all applicable characters to HTML entities. While htmlspecialcharacter()converts special characters to HTML entities. This means htmlentities( ) will check for non English language characters, such as French accents, the German umlaut, etc.

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Subject: PHP

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Q:

What is the use of $_Server and $_Env?

Answer

$_SERVER and $_ENV arrays contain different information. The information depends on the server and operating system being used. Most of the information can be seen of an array for a particular server and operating system. The syntax is as follows:


foreach($_SERVER as $key =>$value)


{ echo “Key=$key, Value=$value\n”; }

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Subject: PHP

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