Interview Questions.

Question 1. What Is Ns Basic/symbian Os?

Answer :

NS Basic/Symbian is a entire, easy to apply BASIC development environment for Symbian OS devices, with a look and sense similar to Visual Basic. NS Basic/Symbian OS provides a complete, modern implementation of BASIC, with proper subroutines, consumer described records types and no line numbers. The development surroundings runs on a Windows computing device.

NS Basic/Symbian OS includes over 150 statements and capabilities. Support is furnished for record managing, TCP/IP, pix and extra. A complete set of preferred sc .

Question 2. Why Should Developers Target Symbian Os, Rather Than Any Other Phone Running A Java Vm?

Answer :

However there also are critical technical motives to do with:

Robustness
Functionality and platform integration
Performance, both in terms of pace and memory footprint.
Robustness: Symbian OS is designed to perform 24 hours a day, 7 days every week. User data loss on Symbian licensee gadgets may be very rare, and system resets are nearly by no means required. Java builds in this robustness.

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Question three. What Services Are Being Developed?

Answer :

It's early days for rolled out services, however we're seeing pilots and experimental services being created. For instance "Wireless Java for Symbian Devices" describes the Handheld Travel Assistant, advanced by way of Telenor R&D. This makes use of Java and current Internet offerings to offer users with vicinity associated facts, inclusive of local maps, area of friends, delivery routes, and information approximately local shops and eating places. A GPS gadget changed into used for role information.

Question 4. What Is Symbian's Significance In The Wireless Market?

Answer :

Symbian plays a important role in the wireless marketplace: Symbian's licensees represented over 80% of mobile cellphone sales in 2002. The significance of this function become underlined by Jorma Ollila, Chairman & CEO of Nokia, whilst he stated in May 2001, that "..By 2004, 50% of Nokia's 3G phones can be Symbian OS based"

The wireless marketplace is converting, driven through clients who need get entry to to services and applications in order to upload price to their leisure and paintings, and by using operators.

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Question 5. Is There An Emulator?

Answer :

Symbian does now not offer a native emulator that runs on the desktop like Microsoft and Palm do. Symbian's computing device emulator calls for that code be compiled via an x86 compiler instead of an ARM compiler. We feel the differences this would introduce could make any take a look at outcomes on the emulator invalid for real gadgets.

Instead, they offer a provider known as Nokia Remote Device Access. This connects you, thru the net, to an actual tool, that you see and interact with from your internet.

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Question 6. In What Areas Do You Think Wireless Java On Symbian Os Will Be Applied?

Answer :

The without a doubt interesting Java applications and services, consisting of video games, can be people who bring together a extensive variety of assets and bring humans collectively. So a income application would possibly use a product catalogue, course planning, a time desk, and area services. Or Java can add value to even a easy game like "Snake" with the aid of permitting me to play against my kids once I'm overseas with a couple of minutes between meetings.

Services like these additionally make use of network assets and bandwidth.

Question 7. What Is Cleanup Mechanism In Symbian?

Answer :

To handle the exceptions in symbian we used the cleanup stack mechanism.The Symbian exception mechanism is primarily based on leaving.The most vital difficulty here is the Cleanup Stack.

Symbian OS is optimized for low resource usage, and while an surprising event takes place, there may be a want to easy up all the presently allocated gadgets. To ensure you genuinely de-allocate ANY object you create, there may be a stack, named the Cleanup Stack, where you push any item that wishes to be de-allocated later.

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Question eight. What Are The Pitfalls, And How To Avoid Them?

Answer :

I think the biggest mistake a developer can make is assuming that Java on a cell phone is similar to Java on the computer. Even though we offer the same or similar APIs, there are many constraints, and of route possibilities, that ought to be taken into consideration.

Constraints consist of a slower processor, less reminiscence, smaller display screen, and extra restrained input, which can be keyboard, pointer, or keypad. So a developer has to learn how to get "a quart from a pint pot".

Question 9. I Ported An App From Palm. Why Doesn't It Look More Like A Symbian App?

Answer :

Our goal in launch 1.Zero is close to best going for walks of Palm apps on Symbian OS gadgets. If we changed the interface, quite a few apps might destroy or look unsightly, because the spacing would be off. We could be including improvements to the UI so Palm apps can be up to date to a more modern-day look and feel.

Of route, there isn't a outstanding consistancy in how Symbian apps appearance. UIQ gadgets have a totally distinctive appearance and experience than S60 devices. NS Basic/Symbian OS apps will look the equal on both S60 and UIQ.

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Question 10. Why Should A Developer Choose Java Instead Of Other Development Environments?

Answer :

It's approximately selecting the right tool for the activity. We've mentioned the advantages of Java, and for these motives Java has an important position in developing third celebration programs and offerings. C++ is more appropriate where Java may not offer the specified functionality or performance: we will virtually be the use of C++ for application engines, tool drivers, and other center components for pretty some time to come back.

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Question 11. How Will The New Symbian Foundation Affect Ns Basic/symbian Os?

Answer :

Not the whole thing is understood at this factor. Nokia have said it'll take 6 months to finish the purchase and layout a new roadmap. We recognise they may be searching in any respect aspects of their device, from equipment to interfaces to the middle OS. They have stated that current S60 apps will retain to run.

This is truely accurate information for us (and our customers). It means that apps written using NS Basic/Symbian OS will preserve to paintings, supplying a strong platform for improvement while Nokia/Symbian Foundation.

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Question 12. What Are Your Plans For Java On Symbian Os?

Answer :

The PersonalJava and JavaPhone APIs on Symbian OS gives possibly the richest Java surroundings for mobile telephones. As an example we'd use this capability to create an utility for coordinating a meeting: it'd use calendar APIs, contacts APIs, and messaging APIs to barter a suitable time and venue amongst the delegates.

However we recognize that for lots gadgets PersonalJava's footprint is too big, so similarly we offer MIDP compatibility for all our telephones.

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Question 13. Who Is Ns Basic/symbian Os Designed For?

Answer :

NS Basic/Symbian OS is designed to appeal to builders with Visual Basic revel in, to developers that don't have the time or background to master Carbide.C++ and to experienced programmers that want a RAD environment to fast produce apps or prototypes. It is not supposed to update Carbide.C++, however rather to permit extra programmers to be effective.

NS Basic/Symbian OS can also be very interesting to developers who have been the use of NS Basic/Palm. Most of their apps will run on Symbian.

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Question 14. What Is The Role Of Wireless Java?

Answer :

In order to gain a go back on their investment, operators and service developers need to create and installation services and applications hastily and reliably, and they should target a extensive range of gadgets. Furthermore users and operators should be assured that services and applications are cozy.

Symbian cell phones are "shrewd customers", in order that they don't have a thin customer's dependency on a network connection. Instead, by using making top use.

Question 15. How Can A Developer Or Service Provider Get Started?

Answer :

Well, of path the primary tip needs to be purchase a duplicate of the e-book "Wireless Java for Symbian Devices"! This covers the commercial enterprise and technical issues to do with creating, deploying and gaining economic go back from developing wi-fi applications and offerings. There's additionally a guide net website online to manual readers in finding all the other sources they need to get started.

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Question 16. What Devices Does It Run On?

Answer :

NS Basic/Symbian OS runs on all Symbian OS gadgets based on Symbian S60 third & fifth Edition and UIQ3.

S60 third Edition gadgets encompass the Nokia N71, N73, N78, N79, N80, N81, N85, N91, N92, N93, N95, N96, E50, E51, E60, E61, E62, E70, 3250, and 5500, plus others. Since those gadgets do now not have touchscreens, a cursor is displayed which you pass around with the five way button. Touchscreen gadgets supported encompass the 5800.

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