Best Bigdata Hadoop Developer Interview Guide For Everyone Prepared by Top Industry Experts

The market for ‘BigData’ is experiencing a tremendous growth, thereby creating a huge demand for skilled and trained BigData professionals across the globe. Though the demand is massive, the supply certainly seems to be falling short of the demand. The core reason might be the lack of proper homework before attending the interviews.

To make things smoother for you during the interview preparation process, we have listed top 50 commonly asked questions along with the best suited answers, which can help you to successfully crack the BigDataHadoop interview.

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Note: All the questions and answers are prepared by the subject experts who are associated with Kovid Academy.

1. What is Big-Data?

The term ‘Big-data’ is used to represent a collection of large and complex datasets, which are difficult to capture, store, process, share, analyze, and visualize using the traditional RDBMS tools.

2. Explain the five V’s of Big Data?

Big-Data is often described using the five V’s, which are:

Volume – the amounts of data generated every day, i.e. in Petabytes and Exabytes.

Velocity – the speed at which the data is generated every second. After the advent of social media, it probably takes seconds for any news to get viral across the Internet.

Variety – the different types of datagenerated every day that comes in a variety of formats like texts, audios, videos, csv, etc.

Veracity – the uncertainties or the messiness of thedata. With different forms of bigdata, it gets difficult to control the accuracy and quality. The volume often makes up the core reason behind the lack of accuracy and quality of thedata.

Value – having access to bigdata is always a good thing, but failing to extract the real value from it is completely useless. Extracting value means, drawing benefits to the organizations; achieving the return on investment (ROI); and making profits for the businesses working on big data.

3. On what concept the Hadoop framework works?

The Hadoop Framework works on:

Hadoop Distributed File System: HDFS is a Java-based storage unit in Hadoop, which offers reliable and scalable storage of large datasets. It is responsible for storing different types ofdata in the form of blocks.

Hadoop MapReduce: MapReduce is a Java-based programming paradigm that offers scalability across different Hadoop clusters. It is responsible for distributing the workload into different tasks to run in parallel. The job of ‘Map’ is to split the datasets into tuples or key-value pairs, and the ‘Reduce’ then takes the output from Map and combines it with datatuples into a smaller set of tuples.

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Hadoop YARN: Yet Another Resource Negotiator is the architectural framework in Hadoop that allows multiple data processing engines to handle storeddata in a single platform, disclosing a new completely method to analytics.

Note: Reduce jobs are performed only after the execution of Map jobs.

Why Choose Contract Position Over Permanent Job?

People generally assume that a contract job is something that you take on only when you can’t find a full-time employment position. Well, maybe it was once upon a time but not anymore. Now, many people know the benefits of contract-basis jobs.

Before we go into detail about the benefits that a contract position has over a permanent one, let’s get to know more about both.

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Contract Job: A contract job is where you will have to work for a certain duration of time. The contract maybe for a few months or even a few years, depending on the hiring company’s requirement. For instance, an employee who has taken a contract job of 6 months will be working at the client’s office but will be paid by the employment contract. After the completion of the contract, the employee gets to decide what he wants to do for the remaining 6 months.

Permanent Job: A permanent job is your basic 9 to 5 job where you work for a particular company for as long as you want to. You will be paid on a monthly basis, or twice a month in some countries. You will be able to avail the various benefits offered by the company.

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Now, why would you choose a contract job over a permanent position?

Well, if you have a permanent job you will have to handle the same roles and responsibilities daily and sit on the same desk. With a contract job, you will be working on various projects for different companies in a year, depending on you. This will grant you the chance to utilize, develop, and expand your skill sets.
After getting into a contract basis job domain, you will get to work with different people, which will help in widening your network for future references. You could be lucky enough to even travel for the job.
Through many job portals such as contract-jobs.com, you will be able to work for some of the finest companies not only in India but also in the world. Plus, there are many government contract jobs to apply for. We all know it is difficult to get a government job. But, with contract jobs, as long as you have the skills, experience, and qualifications, you can get a government contract job.
In this concept of contract jobs, you get the freedom to be your own boss and work on your own terms. Once the project is handed over to you, you answer to yourself. You just have to execute it on time and do well.
On the Other Side with a permanent job, you get a few leaves in a month. But, with contract jobs, you get to work for a certain amount of time, let’s say 6 months, and have the remaining 6 months of the year to yourself once the contract is over, at your own expenses of course. You could travel, write a book or even take up another contract, it’s totally up to you.
Nowadays, due to the coronavirus pandemic, employers are more interested in hiring manpower on a contractual basis as it offers flexibility and cost-saving in manpower hiring. There are many contract jobs in the job market. This enhances the possibilities of you getting faster employment than that of a permanent job.
The more contracts you take up in a year, the more your earnings, and sometimes you get paid more than that of those in permanent positions. Plus, some companies offer amazing benefits for contractors to avail of.
Well. I hope the above-mentioned points entice you enough to go for contractual jobs rather than a permanent position if you seek a flexible lifestyle and want to work on your own terms.

Online MBA Myth & Facts Demystifying Online MBA Programs: Separating Fact from Fiction

Introduction
Embarking on the journey of pursuing an online MBA can be a pivotal decision, unlocking a world of career possibilities in the ever-evolving job market. However, the decision-making process is often clouded by misconceptions and conflicting opinions. In this blog post, we aim to dispel common myths surrounding online MBA programs, providing clarity to empower you in making an informed choice.

Myth 1: Online MBA programs are not as challenging as on-campus programs.

Contrary to popular belief, online MBA programs offer a level of rigor comparable to traditional on-campus counterparts. Reputable business schools provide both online and offline programs concurrently, ensuring consistency in curriculum, faculty, and study materials. Online students face similar challenges and learning opportunities, debunking the misconception that online programs are less demanding.

Myth 2: To pursue an online MBA, you must be technologically proficient.

There exists a misconception that only tech-savvy individuals can excel in online learning. The reality is that anyone with a basic understanding of internet usage can enroll in an online MBA course. The process is as simple as surfing the internet or using an app. For those less familiar with technology, universities often offer assistance and introductory sessions, ensuring a smooth transition into the online learning environment.

Myth 3: There isn’t any direct communication with faculty members.

A prevalent myth suggests that online MBA students lack meaningful interactions with professors and peers. In reality, online students have various avenues for communication, including doubt-solving sessions, email, and discussion forums. While the level of interaction may vary between institutions, many online programs prioritize fostering connections between students and faculty, creating a supportive learning environment.

Myth 4: Programs for online MBAs do not require the participation of a learner.

Another misconception is that online MBA programs involve minimal effort from students. On the contrary, active participation is crucial for success. Students engage in video lectures, participate in activities, adhere to project timelines, and take assessments to demonstrate their understanding of the material. Earning an MBA degree online requires dedication and effort, dispelling the notion that success can be achieved merely by enrolling.

Myth 5: Online MBA programs are not offered by reputable business schools.

Some believe that only traditional universities provide reputable MBA programs. However, prestigious institutions globally, such as Imperial College London, The University of Warwick, The University of Edinburgh, Cranfield School of Management, and Lancaster University, offer online MBA degrees. These programs adhere to the same high standards as their on-campus counterparts, providing a quality education to students worldwide.

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Conclusion

Now that we’ve debunked these common myths, it’s evident that online MBA programs are a credible and challenging avenue for those seeking advanced education. An exemplary institution in this regard is DPU-COL, a highly regarded institute in India accredited A++ by NAAC. With over 35 years of experience, DPU-COL offers online MBAs in multiple specializations, providing top-notch learning and placement opportunities to learners across the country.

In conclusion, the decision to pursue an online MBA should be based on accurate information and personal goals. With the flexibility, accessibility, and quality of education offered by reputable institutions, online MBA programs stand as a viable and valuable option for ambitious individuals aiming to advance their careers in today’s competitive job market.