Technology Questions

Q:

Explain how garbage collection deals with circular references?

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 2417
Q:

What are the different types of diagrams and what do you know about them?

Answer

Use case diagram, activity diagram, Collaboration diagram. 


Use case diagram :


It describes the business environment. Its primary goal is to show the series of events and actions within any given process that will be performed by an actor.  


 


Activity diagram:


The activity diagram is important because it gives an outline of the work flow within the business as well as the activities and action completed. 


For instance with a company, there is likely to be more than one department. In such a case each department, will have different access levels to the system. 


So if there’s a Medical, HR and Accounts team they will only have access to screens that relate to each. 


The activity diagram will highlight the differences within the departments which will be very helpful for developers when they are designing and coding. 


 


Collaboration diagram:


A collaboration diagram, also called a communication diagram or interaction diagram, is an illustration of the relationships and interactions among software objects in the Unified Modeling Language (UML). The concept is more than a decade old although it has been refined as modeling paradigms have evolved. 

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Q:

What is the purpose of overriding toString() method?

Answer

we can override tostring() method to return String representation of our object data

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Subject: Java

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Q:

What is the importance of Doctype in HTML?

Answer

Doctype tag is not a HTML tag, it is just an instruction that is passed to the web browser to check for the information that is being provided by the markup language in which the page is written. Doctype is sometimes referred as Document type definition (DTD) that describes some rules that has to be followed while writing the markup language so to make the web browser understand the language and the content correctly. Doctype is very important to be placed in the beginning of the HTML and before the <HTML> tag to allow easy rendering of the pages that are used.

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Subject: Web Technology

1 2415
Q:

Explain about creating VB applications in excel ?

Answer

User defined functions can be created into the Microsoft spreadsheet. Spreadsheets can be customized according to the user needs by using VB applications. To create visual basic functions useful for spreadsheet you need to click Tools and select Macros where you will need to click on Visual basic editor.

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Q:

Specify the CICS command used to read a VSAM record starting with prefix F. Code all the relevant options?

Answer

EXEC CICS READ


DATASET('FILENAME')


INTO(data-area)


RIDFLD(data-area)


KEYLENGTH(1)


GENERIC


LENGTH(WK-LEN)


END-EXEC.

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Q:

What is a MAC Address?

Answer

MAC- Media Access Control .its a unique identifier defined for certain hardware/network adapters

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Q:

How to get the contents of an input box using Javascript?

Answer

Use the "value" property.
var myValue = window.document.getElementById("MyTextBox").value;

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Subject: Web Technology

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