Technology Questions

Q:

What is the use of tostring() method?

Answer

If we print any object by using println() or print() methods.


The println() or print() methods internally calls tostring() method and prints the return value of toString() method.

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Subject: Java

0 1945
Q:

What are the ways through which the files can be transferred to server?

Answer

- Files can be transferred to the server by using the FTP protocol also known as File Transfer Protocol. 


- FTP is used as a standard network protocol that transfers the file from one computer to another computer using the TCP protocol network.


- This uploads the pages and other documents that are stored in private disk to the public web hosting server. 


- FTP is used on a client server architecture that allows different controls and data connections between the client and the server. 


- FTP uses clear-text sign in protocol that allows the client to use the user name and password for authentication purpose.

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Subject: Web Technology

0 1943
Q:

What is FDM?

Answer

FDM is an analog technique that can be applied when the bandwidth of a link is greater than the combined bandwidths of the signals to be transmitted.

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0 1943
Q:

Explain how garbage collection deals with circular referrences?

Answer

The .Net runtime knows about all the references between the objects. It can identify all the circular references that are reachable from the root and hence finalize them to free them all at once if and when needed

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Subject: .NET

0 1940
Q:

What does cache and no cache options mean while creating a sequence?

Answer

The CACHE option means how many sequences will be stored in memory for access by the application objects. The performance is faster. However in case of the database is down the data is memory is lost for the sequence.


The NO CACHE option means values are not stored in memory. So there might be some performance issue. 

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Subject: Oracle

0 1939
Q:

What is the use of Virtual Domain?

Answer

- Virtual domain is the domain of the client on which they can run their applications without having to install the server or hardware. 


- The software need not to be installed physically on the server as it can be done using the local repositories and maintaining the domain locally. 


- Using the virtual domain the server storage space is utilized efficiently and the data can be made more secure before publishing it online. 


- Virtual domains are used to represent the personal Internet web address domain name and can be made with your personal one. 


- Virtual domain provides more security in terms of using your own personalized domain and allows the access to the resources that are on web.

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Subject: Web Technology

0 1937
Q:

How to set breakpoints?

Answer

Setting up the break points:



  1.  Go to the line where you need to mark the breakpoint.

  2.  Click with mouse on left corner margin of that line.

  3.  Another way is to press F9

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Subject: .NET

0 1935
Q:

Explain how to limit the rows that are retrieved by a query.

Answer

The number of rows returned by a select query can be restricted by the LIMIT clause.
Example:
SELECT * from employee
LIMIT 20

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Subject: Oracle

0 1935