Mobile Application Architect Interview Questions And Answers

You should test the application on 4G, 3G, 2G and WIFI. 2G is a slower network, its good if you verify your application on slower network also to track your application performance.

Multimedia Messaging Services

Android, Symbian, Windows, iPhone etc.

Test plan for mobile app is very similar to software app

☛ Objective
☛ Automation tools required
☛ required features to be tested:
► ► network
► ► security
► ► performance
► ► size
► ► battery
► ► memory
☛ features not to be tested
► ► display size
► ► resolution
☛ Test cases
☛ Test Strategy
☛ Tested by
☛ Time required
☛ No. of resources required

Using Emulators.

Having better service capacity with high availability and low latency is mission critical for almost all businesses.

Availability means the ability of the application user to access the system, If a user cannot access the application, it is assumed unavailable. High Availability means the application will be available, without interruption.

Achieving high availability for a application is not always a easy task. Using redundant server nodes with clustering is a common way to achieve higher level of availability in web applications.

Availability is commonly expressed as a percentage of uptime in a given year.

Mobile device testing means testing the mobile device and mobile application testing means testing of mobile application on a mobile device.

Web applications runs from mobile web browsers like Chrome, Firefox, Opera, Safari etc using mobile network or WIFI. E.G. of web browser applications are m.facebook.com, m.gmail.com, m.yahoo.com, m.rediffmail.com etc.

Scalability is the ability of a system, network, or process to handle a growing amount of load by adding more resources. The adding of resource can be done in two ways

Scaling Up
This involves adding more resources to the existing nodes. For example, adding more RAM, Storage or processing power.

Scaling Out
This involves adding more nodes to support more users.

Any of the approaches can be used for scaling up/out a application, however the cost of adding resources (per user) may change as the volume increases. If we add resources to the system It should increase the ability of application to take more load in a proportional manner of added resources.

An ideal application should be able to serve high level of load in less resources. However, in practical, linearly scalable system may be the best option achievable.

Poorly designed applications may have really high cost on scaling up/out since it will require more resources/user as the load increases.

☛ Installation and uninstallation of the application
☛ Verify the device in different available networks like 2G, 3G, 4G or WIFI.
☛ Functional testing
☛ Interrupt testing- Able to receive the calls while running the application.
☛ Compatibility testing - able to attach the photo in message from gallery
☛ Test application performance on different handset.
☛ Make some negative testing by entering the invalid credentials and test the behavior of the application.

Emulator is based on hardware and software wherein simulator is based on software. Simulation is system that behaves similar to something else while emulation is system that exactly behave like something else.

Clustering is needed for achieving high availability for a server software. The main purpose of clustering is to achieve 100% availability or a zero down time in service.

A typical server software can be running on one computer machine and it can serve as long as there is no hardware failure or some other failure.

By creating a cluster of more than one machine, we can reduce the chances of our service going un-available in case one of the machine fails.

Doing clustering does not always guarantee that service will be 100% available since there can still be a chance that all the machine in a cluster fail at the same time. However it in not very likely in case you have many machines and they are located at different location or supported by their own resources.

Mobile applications are of three types:

Native Application- Native app installed from application store like Android's google play and apple' app store. The application which can be installed into your devices and run are known as native application for E.G. whats App, Angry birds etc.

Web Application- Web applications runs from mobile web browsers like Chrome, Firefox, Opera, Safari etc using mobile network or WIFI. E.G. of web browser applications are m.facebook.com, m.gmail.com, m.yahoo.com, m.rediffmail.com etc.

Hybrid Application- Hybrid apps are combinations of native app and web app. They can run on devices or offline and are written using web technologies like HTML5 and CSS. For E.G. ebay, flipkart etc

Streaming is a process of downloading the data from the server. Streaming media is the multimedia that is transferred from server or provider to the receiver.

A cluster is group of computer machines that can individually run a software. Clusters are typically utilized to achieve high availability for a server software.

Clustering is used in many types of servers for high availability.

App Server Cluster
An app server cluster is group of machines that can run a application server that can be reliably utilized with a minimum of down-time.

Database Server Cluster
An database server cluster is group of machines that can run a database server that can be reliably utilized with a minimum of down-time.

apk - Android Application Package File
exe - Executable Files
iPA -iOS App Store Package
prc - Palm Resource Compiler
jad - Java Application Descriptor
adb - Android Debug Bridge
Aapt - Android Asset Packing Tool

Errors can be verified by the generated logs. We can use configuration utility on iOS and android monitor.bat on android. Here are few to name Android DDMS, Remote Debugging on Android with Chrome, Debugging from Eclipse with ADT, Android Debug Bridge, iOS simulator etc.

Hybrid apps are combinations of native app and web app. They can run on devices or offline and are written using web technologies like HTML5 and CSS. For E.G. ebay, flipkart etc

xplain the example as per your experience.

The number of individuals involved in technology decisions is increasing, meaning that architects have to work with a large and diverse set of stakeholders, each with their own motivation and objectives. Architects must have strong influencing skills to ensure that EA meets its objectives. But many architects do not yet hit the bar: GGL data show that only 35% of architects are good at influencing stakeholders. When interviewing EA candidates, find out if they have a demonstrated ability to persuade others.

☛ By testing your application on multiple devices.
☛ By changing the port and IP addresses to make sure the device is getting connected and disconnected properly.
☛ By making calls and sending messages to other devices.
☛ By testing your web application on different mobile browsers like chrome, Firefox, opera, dolphin etc.

Business priorities are constantly in flux. All of GGL Architecture members say that their business's strategy has changed frequently in the past couple of years. But many EA groups report that they struggle to react to these changes. To avoid being left behind, EA needs architects who can quickly adjust and adapt to new, different, and changing circumstances.

☛ System integration testing
☛ Functional testing
☛ Installation and uninstallation of the app
☛ Test HTML control
☛ Performance
☛ Check in multiple mobile OS
☛ Cross browser and cross device testing
☛ Gateway testing
☛ Network and Battery testing

Business leaders are far more likely to turn to technology to improve products and services than they once were, and many of them are willing and able to run new technology projects on their own. GGL data show that nearly a third of technology spending at the average company is outside of IT, and so architects need to be flexible enough to support these new initiatives, many of which involve new or untested technologies.

Native app installed from application store like Android's google play and apple' app store. The application which can be installed into your devices and run are known as native application for E.G. whats App, Angry birds etc.