Data Science- Backbone of IT Industry

Data Science Training in BTM Layout

With the shift from analog to digital, the flow of data has increased exponentially. Data is collected from a myriad of sources like web logs, mobile devices, sensors, instruments, and transactions. At the same time, new technologies are emerging to organize and make use of this avalanche of data. But the challenge lies in how to extract value from data. This is where Data Science comes in.

Technology behind Data science Training in Bangalore

Data science can simply be put as the amalgamation of scientific methods, processes and systems to extract knowledge or insights from data.

Python, R and SAS are the three most popular languages for data analysis.

R – R is the language de choice of statistics. It is a free and open source programming language used to perform advanced data analysis tasks.

Python –Python is a free and open source programming language which has become very popular in data science due to its very large and active community, efficient data mining libraries and functions for model building. Learn Python Training in Marathahalli

SAS – SAS has been the market leader in the commercial analytics space. It offers a lots of statistical functions, has a good GUI for people to learn easily and provides good technical support. But all at a high cost.

Whichever language you choose to learn, it has its own advantages in Data science applications. At Besant Technologies, learn how to use Data Science with R, SAS or Python from beginner level to advanced techniques from experienced professionals in the field. Our syllabus covers all the important topics like statistics, machine learning algorithm, SQL and data manipulation.

Data scientist is the dream job

There is a significant and growing demand for data-savvy professionals in IT sector, public agencies, and nonprofits. There is short supply of professionals who can work effectively with data in large scale and this is can be seen by the rapid rise in salaries for data engineers, data scientists, statisticians, and data analysts.

Data Science Training certifies you in the latest Data Analysis Technologies to keep in tab with industry demands.

It endows professionals with knowledge in some data management technologies like Hadoop, R, Flume, Sqoop, Machine learning, Mahout Etc. This certification gives an added advantage for building a bright and successful career.

Data Science is your shortcut to a better career path. Many top locations in the world are in the lookout for Big data experts. It is your chance to go places.

It is a good career option if you are looking to get placed in top fortune companies. Your CV is your ticket when you have Data science training. Besant Technologies provides Data Science Training in BTM Layout with expert teachers and fully practical classes. Our Data science training package also includes job placement assistance, which is really a bonus point for students. So join today and make use of this opportunity to start a bright career.

Data science is the future

New sources of data are emerging every day. Internet of Things is talked about a lot today because of the large flow of data from Sensors in manufacturing processes to vehicles. A lot of this data will be time series based and have its own set of unique problems. Even though automated systems will play a key role, the human element will still be necessary for data science in the future.

Mobile Devices have come to accommodate Artificial Intelligence (AI) in their operating systems. Personal assistants like Siri, Cortana and Google now make use of machine learning and AI logic which all depend on data sciences. It is the back bone of tomorrow’s technology.

At Besant Technologies, our expert trainers keep themselves updated so that you don’t lag behind. We provide training in all the emerging concepts. We keep you in par with industry standards and demands.

We have our branches with expert trainers in data science course in many locations such as Old Mahabalipuram road, Velachery, Tambaram and Bangalore.

Original Source From - Besanttechnologies.com

Java Interview Questions & Answers – Part1

1)What are Web Services?

Web services are business logic components which provide functionality via. Internet using standard protocols such as HTTP. It is created using Soap or Rest. For E.g. in Google search page we got results like feeds, advertisement , news etc., from multiple sites, it is by web services which enables various websites to talk to each other and share data between them.

2)Differences between Soap vs. Rest.

SOAP – “Simple Object Access Protocol”

• SOAP is a method of transferring messages, or small amounts of information, over the Internet. SOAP messages are formatted in XML and are typically sent using HTTP (hypertext transfer protocol).

Rest – “Representational state transfer”

• Rest is a simple way of sending and receiving data between client and server and it doesn’t have very many standards defined. You can send and receive data as JSON, XML or even plain text. Its light weighted compared to SOAP.

3)How to create a DB connection.

Five steps to query a database:

• Load the driver
• Get connection
• Query the database
• Process the result set
• Close connection

Click here for Sample Program.

4)Differences between prepared statement and callable statement.

• Prepared Statement – Execute a precompiled SQL with/without input parameters.
• Callable Statements – Execute a call to database stored procedure.

Click here for Sample Program.

5)Difference between System. Out and System. Err.

System. Err is a PrintStream. System. Err works like System. Out except it is normally only used to output error texts. Some programs (like Eclipse) will show the output to System. Err in red text, to make it more obvious that it is error text.

6)What is Key Store?

Java Key Store (JKS) is a repository of security certificates, either authorization certificates or public key certificates – used for instance in SSL encryption.

7)Write a Java program to print Fibonacci series.

Click here for Sample Program.

8)What is immutability in java?

Once created the objects state cannot be changed .E.g. string

9)How to create read only values in java.

Using final keyword
Final int a=4;

10)Difference between Hashmap and Hashtable.

• Hashtable is synchronized but Hashmap is not.
• Hashtable can’t contain null values but Hashmap permits null values.

11)Difference between Iterator and Enumeration.

• Iterator has remove () method but Enumeration do not have.
• Iterator is used to Add and remove object, enumeration is used to traverse and fetch objects.
• Iterator is used to manipulate text but Enumeration is used for read-only access.

12)Define Class-object relationship.

Object – Objects have states and behaviors. Example: A dog has states-color, name, and breed as well as behaviors -wagging, barking, and eating. An object is an instance of a class.

Class – A class can be defined as a template/ blue print that describe the behaviors/states that object of its type support.
Class is a blueprint while objects are actual objects existing in real word.

Get More Questions Related to 

Java Training inMarathahalli

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13)What to test while testing Client-server application.

• Performance
• Load
• Integration between multiple components
• MUT
• SOAK testing
• Multiple clients for same server

14)How to Read/write excel file in Java.

Click here for Sample Program.

15)Write a java program to count number of unique words separated by comma (,) and their occurrence from text file.

Click here for Sample Program.

16)Difference between int & INTEGER.

int is a primitive type. Variables of type int store the actual binary value for the integer you want to represent. int.parseInt(“1”) doesn’t make sense because int is not a class and therefore doesn’t have any methods.

Integer is a class, no different from any other in the Java language. Variables of type Integer store a reference to Integer objects, just as with any other reference type. Integer.parseInt(“1”) is calling the static method parseInt from class Integer (note that this method actually returns an int and not an Integer).

int type Declaration:

int count;

• count is a primitive
• count stores 32 bits of information (in the range Integer.MIN_VALUE to Integer.MAX_VALUE)
• Literal integers (e.g. 123 or 0x7b) are of type int

Integer type Declaration:

Integer count2;

• count2 is an object reference
• count2 points to an object of type java.lang.Integer (or to null)
• The object count2 points at has an int member variable as described above.

To be more specific, Integer is a class with a single field of type int. This class is used where you need an int to be treated like any other object.

17)Difference between Serialization and synchronization.

• Serialization is a process by which object instance is converted into stream of bytes.
• Synchronization ensures that object data is into accessed by multiple threads at the same time.

18)Difference between sleep and wait. Which is better?

• Wait is better than sleep.
• Sleep cannot be waken but Wait can be woken using notify method.
• Sleeps do not release lock but Wait releases lock.

19)Difference between Array and ArrayList.

• Array size is fixed at the time of declaration. We can’t modify it.
• ArrayList size is not fixed at the time of declaration. We can change its contents.

20)Difference between Set and Map.

• Set – It is also an interface to represent linear collection with no duplicates. Order of insertion is not maintained. Example:- Harshest, Tree Set.
• Map – It represents an indexed collection i.e. key-value pairs. Example: – Hashmap.

21)What is AJAX?

• AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS and Java Script.
• Ajax uses XHTML for content and CSS for presentation, as well as the Document Object Model and JavaScript for dynamic content display.
• Conventional web application transmit information to and from the sever using synchronous requests. This means you fill out a form, hit submit, and get directed to a new page with new information from the server.
• With AJAX when submit is pressed, JavaScript will make a request to the server, interpret the results and update the current screen. In the purest sense, the user would never know that anything was even transmitted to the server.
• XML is commonly used as the format for receiving server data, although any format, including plain text, can be used.
• AJAX is a web browser technology independent of web server software.
• A user can continue to use the application while the client program requests information from the server in the background
• Intuitive and natural user interaction.
• No clicking required only Mouse movement is a sufficient event trigger.
• Data-driven as opposed to page-driven

Original Source from : Java Training in Bangalore