Technology Questions

Q:

What is difference between HTML and XHTML?

Answer

The differences between HTML and XHTML are:


- HTML is application of Standard Generalized Markup Language(SGML) whereas XML is application of Extensible Markup Language(XML).


- HTML is a static Web Page whereas XHTML is dynamic Web Page.


- HTML allows programmer to perform changes in the tags and use attribute minimization whereas XHTML when user need a new markup tag then user can define it in this.


- HTML is about displaying information whereas XHTML is about describing the information.

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Subject: Web Technology

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Q:

What’s the difference between include and require?

Answer It’s how they handle failures. If the file is not found by require(), it will cause a fatal error and halt the execution of the script. If the file is not found by include(), a warning will be issued, but execution will continue.
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Subject: PHP

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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:

What is Wi-Fi technology and over which frequency band it operates?

Answer

Wi-Fi technology is a technology used for transmitting a signal using the 802.11 specifications works a lot like it does with a basic Ethernet hub: They’re both two-way forms of communication, and they both use the same frequency to both transmit and receive, often referred to a half-duplex. WLANs used radio frequencies (RFs) that are radiated into the air from an antenna that creates radio waves. These waves can be absorbed, refracted, or reflected by walls, water, and metal surfaces, resulting in low signal strength. So because of this vulnerability to surrounding environmental factors, it’s pretty apparent that wire-less will never offer us the same robustness as a wired network can, but that still doesn’t mean we’re not going to use or run the wireless or Wi-Fi.

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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:

What is final method?

Answer

Final method is a method defined in the super class with final modifier.


We cannot overriding final method of super class in the sub class.


EX:


 Class Sample {


   final void funOne() {


   }


   void funTwo() {


   }


}


Class Sub extends Sample {


  void funOne() { // overriding is not allowed


  }


  viod funTwo() { //overriding is allowed


  }


}

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Subject: Java

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Q:

My SQL statement SELECT AVG(SALARY) FROM EMP yields inaccurate results. Why?

Answer

Because SALARY is not declared to have NULLs and the employees for whom the salary is not known are also counted.


 

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Q:

How can visual basic be used for server side scripting?

Answer

Visual basic can be used for server side scripting. A component designed with Visual basic will not have any user interface instead provides the functionality of Active X to other programs via COM. This form of technique allows server side functionality and add in module.

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