Technology Questions

Q:

How do you insert a record with a nullable column?

Answer

To insert a NULL, move -1 to the null indicator


To insert a valid value, move 0 to the null indicator


 

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Q:

What is TDM?

Answer

TDM is a digital process that can be applied when the data rate capacity of the transmission  medium is greater than the data rate required by the sending and receiving devices.

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Q:

Describe the .NET base class library

Answer

.NET’s Base class library exists in order to encapsulate huge number of common functions and makes them easily accessible to the developer. .NET base class library provides the functionality like ADO.NET, XML, Threading, IO, Security, Diagnostics, Resources, Globalization, collections etc. It serves as the main point of interaction between developer and runtime.

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Subject: .NET

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Q:

Describe Android Application Architecture.

Answer

Android Application Architecture has the following components:
* Services – like Network Operation
* Intent - To perform inter-communication between activities or services
* Resource Externalization - such as strings and graphics
* Notification signaling users - light, sound, icon, notification, dialog etc.
* Content Providers - They share data between applications

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Q:

Define cursor attributes: %FOUND, %NOTFOUND, %ROWCOUNT, and %ISOPEN

Answer

- %FOUND


 This is a Boolean variable which evaluates to TRUE if the last row is successfully fetched.


 


- %NOTFOUND


 This is a Boolean variable which evaluates to TRUE if the last row is not successfully fetched. This means there are no more rows to fetch.


 


- %ROWCOUNT


 Returns the number of rows fetched by the cursor.


 


- %ISOPEN


If the cursor is open, it evaluates to TRUE else FALSE.

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Subject: Oracle

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Q:

What are the different models used in cluster analysis?

Answer

There are many algorithms that can be used to analyze the database to check the maintenance of all the data sets that are already present. The different types of cluster models include as follows:


- Connectivity models: these are the models that connect one cluster to another cluster. This includes the example of hierarchical clustering that is based on the distance connectivity of one model to another model. 


- Centroid models: these are the models that are used to find the clusters using the single mean vector. It includes the example of k-means algorithm.


- Distribution models: it includes the specification of the models that are statistically distributed for example multivariate normal distribution model.


- Density models: deals with the clusters that are densely connected with one another in the regions having the data space. 


- Group models: specifies the model that doesn’t provide the refined model for the output and just gives the grouping information

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Q:

When would you use the ping command with the "-t" switch?

Answer

to get the ping back from other computer with no packet loss

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Q:

What is Silk Test and what is the use of it ?

Answer

ilk Test is a Functional testing tool product of Seague software. It uses the language called 4GL(fourth Generation Language).


It has 2 components,
Silk Test Agent - Run on remote machine
Silk Test Host - Creating, Modifying, Viewing the scripts


Uses of Silk Test tool:


1. It’s a tool developed for performing the regression and functionality testing of the application.
2. It benefits when we are testing Window based, Java, the web, and the traditional client/server applications.
3. Silk Test help in preparing the test plan and managing them to provide the direct accessing of the database and validation of the field.

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