Technology Questions

Q:

How is mapreduce related to cloud computing?

Answer

The mapreduce framework contains most of the key architecture principles of cloud computing such as:


- Scale: The framework is able to expand itself in direct proportion to the number of machines available.


- Reliable: The framework is able to compensate for a lost node and restart the task on a different node.


- Affordable: A user can start small and over time can add more hardware.

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Subject: Cloud Computing

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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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Q:

When is the best time to kill a foreground activity?

Answer

The foreground activity, being the most important among the other states, is only killed or terminated as a last resort, especially if it is already consuming too much memory. When a memory paging state has been reach by a foreground activity, then it is killed so that the user interface can retain its responsiveness to the user.


 

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Q:

What are the differences between COBOL and COBOL II?

Answer

There are some differences:


COBOL II supports structured programming by using in line Performs and explicit scope terminators. It introduces new features (EVALUATE, SET. TO TRUE, CALL BY CONTEXT, etc). It permits programs to be loaded and addressed above the 16-megabyte line .  It does not support many old features (READY TRACE, REPORT-WRITER, ISAM, etc.). It offers enhanced CICS support.

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Q:

What do you mean by reference variable in c++?

Answer

A reference variable provides an alias to a previously defined variable.
Data -type & reference-name = variable name

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Subject: C++

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Q:

What is the difference between TCP and UDP?

Answer

TCP-Transmission Control Protocol


UDP- user Datagram protocol


UDP is user assisted program and converts the application into the encapsulated form and makes it end point for data to send and then TCP helps in transmission or broadcast!

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Q:

What CICS command do you need to obtain the user logon-id?

Answer

You must code EXEC CICS ASSIGN with the OPENID option.


 

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Q:

Define Virtual folder.?

Answer

It is the folder that contains web applications. The folder that has been published as virtual folder by IIS can only contain web applications

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Subject: .NET
Job Role: Software Architect

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