Technology Questions

Q:

Which among the following are the capabilities of the Cursor?

A) It reads every row one by one. B) It can be parameterised and hence are flexible
C) It can be positioned to specific rows D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

All the above listed actions are the functions of cursor

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Q:

What is a DB2 plan?

Answer

An application plan or package is generated by the bind to define an access path. 

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Q:

What is Overloading Polymorphism?

Answer

Overloading allows multiple functions to exist with same name but different parameters. Again if you take bike as an example, it has a function “Start” with two forms i.e. ’Auto Start’ and ’kick start’.

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Subject: Java

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Q:

Why interface method is always public?

Answer

To make this method available to every implementation class

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Subject: Java
Job Role: IT Trainer

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Q:

What is the Routing Information Protocol or RIP?

Answer

RIP is a is an interior gateway protocol that was often used in interior networks and in some degree in internet networks. It helps the router adapt to the modifications that are made in a network regarding connections. Now it become less used since more efficient protocols were implemented like OSPF or IS-IS. It is limited to a lower number of routers, a maximum of fifteen router.

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Q:

What is the purpose of declaring a variable as final?

Answer A final variable's value can't be changed. final variables should be initialized before using them.
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Subject: Java

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Q:

what is flat aggregation?

Answer

If you create an Aggregate with more than 16 characteristics, then we call that aggregate as FLAT Aggregate. When an aggregate is active then new data is not available for reporting,These aggregates are called Flat Aggregates.

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Q:

What is the difference between using copy() and move() function in php file uploading?

Answer

Copy() makes a copy of the file. It returns TRUE on success. It can copy from any source to destination. Move simply Moves the file to destination if the file is valid. While move can move the uploaded file from temp server location to any destination on the server. If filename is a valid upload file, but cannot be moved for some reason, no action will occur.

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Subject: PHP

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