Operating Systems

Hadoop and Android are two very different things. Programming on Android is considered for application programming whereas programming on Hadoop is considered to be system programming. Hadoop comes under category of distributed operating system so if you are interested in making distributed operating system then you are welcome to use Hadoop but I would suggest you to go from the basic of distributed OS. Application programming is much easier as it focuses on "Looks" and various functionality that you want to provide, whereas system programming is back-end on server side and it is completely hidden from the user and it is very much difficult as you have to manage servers, database, fault-torrent systems, real-time operating systems etc. And all of them are really tough and you need great skills to in both theoretical knowledge and practical programming skills. Also, youu2019re in designing of algorithms, understanding/modifying existing code plays crucial role as well. If you are interested in system programming then it is good thing but you will have to be very good in it. One small mistake and you will destroy all user data which will surely end your career.

Hello,
As per the latest survey done by a leading media company, there is almost 508+ potential job seekers for every Linux and Unix. Average number of jobs available are much more than the average number of job seeker, so you might face the tough competition if you are a normal and an average student. But still, due to various inauguration of computer and software companies the need of the Unix is rapidly increasing. You need to outsmart in this field to grab the opportunity. BE or B.Tech in IT or computer science is the most sought educational background for this. But, still you need something extra to secure yourself. It is suggested to you that you should to have master M.Tech and some specialized Diplomas and certificate in this course. Other skills like; JavaScript, Python, Software Development etc. are additional weightage.
When it comes to job prospects, the average maximum salary range for Unix is INR 6,00,000/- per year to INR 9,00,000/- per year.

IOS is one of the best platforms to work on. It depends on the audience you will be targeting.Your road to success in developing high-quality apps is a good one.
Programming is an art and you need to be perfect at it. The more you will be spending time on improving programming skills and communication skills, the higher package you will receive.
Since you do not have a computer science background, I suggest you learn that since data structures and algorithms are always required for a job and internship irrespective of the platform you are working on. Gain knowledge or upgrade your skills then you will have a bright future in iOS development and you can continue your career in the same and with experience can become a Project Manager.

As far as Android is concerned, it has a very awesome future ahead. Everything is going to mobile these days, from shopping your clothes, booking movie ticket, booking railway ticket to order vegetables to doorstep and there are lots of things needed to move to mobile now.
Most of android developer work for companies in India, some of them are working as freelancers and very few are working on their own idea. If you have a great idea that can change the way of anything (Like WhatsApp took the text chat on another level, it is so easy to use that everybody wants it first on their smartphone).
In India so many companies are hiring android developer (almost 6 of 10) and startups are offering really handsome packages to a smart developer.
If you have good hands on java then it is so easy to learn android development.

Hello,
The Android development in on the rising mountain. The reason why Android has become so popular is that it allows users to have the best of mobile functionality with applications present on a touchscreen. Most of the Android developers work for companies in India, some of them are working as freelancers and very few are working on their own idea. According to me, you can go to NIIT to learn Android development if you have a strong command over Java development and application development. That's the eligibility to pursue Android from there. But if you think that you have had any knowledge regarding the same and you think that you have to start this from scratch then you may go to YouTube. There are a lot of channels available which may guide you to learn the basics of Android. Salary is also good. Initially, it could be low but as much as you increase your level, you slaty will also go up. Salaries start from Rs. 15,000 a month and range up to Rs. 18,000 a month, depending on the candidate's experience, expertise, and position sought for. And, considering the growth of Android development, job opportunities will grow in the country.
Hope this helps.
Good luck.

Hello!
This is the era of technology and as a consequence, the need for iOS developers is high. The graph is indeed exponentially increasing in the market. With the growing popularity of iPhones, iPads and iPods and the appetite for new apps, we can expect a steady demand for iOS developers who can work some magic when it comes to developing apps. However, to learn iOS, there is no particular admission process or eligibility criteria on which you have to rely upon. There are some prerequisites for this. To learn iOS, you need -Objective C, iOS, Swift, X code, Interface builder, Version Control, framework. These are some requirements to learn iOS. You need to have an Apple Computer or iPad to have access to all the developer tools by Apple.
In India, if you have the advanced knowledge of iOS technology then (As per the Indeed Report), you can work as a mobile software engineer, lead iOS developer, senior iOS engineer, etc. and able to earn a big amount of money. However, it is recommended for you that 'Keeping up with current UX/UI trends and remaining up to date on new functionality exposed through Apples SDKs' is must to enhance your skills.
Hope this helps.
Good luck.

Hello,
iOS development is a certification course in application development for iPhone, iPad, etc. which runs on iOS. The course duration varies from one institute to another. However, in general, it is 6 weeks, or 9 weeks course. To be able to gain admission into these courses, a person should be well-acquainted with one of the programming languages - C, C+, Java, .NET, etc. The admission process varies from one institute to another. To get admission, a student needs to contact an institute of his / her own preference. On completion of this course, a person can become an application developer on the iOS Appstore, developing various applications, which can serve as a good source of income depending on the quality of the applications you develop. However, it is a challenging task as well as the benchmark level to publish an application on the iOS app store is much higher than on the Google Playstore or Windows Store.
I hope this answers the question.