Question 1

What is the difference between verification and validation?

Accepted Answer

Verification: Verification is a process to ensure that the software that is made, matches the original design In other words, it checks whether the software is made according to the criteria and specification described in the requirement document It is to check whether you built the product right as per design It is a low level checking (It is done in walk-through meetings generally) It checked whether it is made accordingly to the design Validation: Validation is a process to check whether the product design fits the client’s need It checks whether you built the right thing It checks whether it is designed properly

Question 2

How to derive test scenarios and use cases? What are the contents and format?

Accepted Answer

Test scenarios are derived from requirement documents We follow each and every functionality (called business rules) mentioned in the requirement document One functionality can have multiple business rules For example, let us say in there is one requirement called “Login” This “Login” may have various scenarios For example, one scenario is, enter the right User ID and wrong password The system should display an error message Another scenario would be to enter wrong User ID and right Password The system should display an error message The third scenario could be to enter the right User Name and right Password The system should allow the user to get into the system This is how the test cases are derived from the requirement documents or from the Use Cases

Question 3

How to write Regression test cases? What are the criteria?

Accepted Answer

Regression test cases are also based on the requirement documents They are written more into detail and with every release (build), the testers need to do regression testing The criteria for regression testing are; there should be no major defects while we do our smoke test and functional testing

Question 4

What are the different tests that can be done for Client Server Application and Web-based Application. Give details.

Accepted Answer

For both client server and web based applications, the testing is the same except one thing: We test web based applications in different browsers, for example, Internet Explorer (will test in different versions like IE 50, IE 60, IE 70), Firefox, Safari (for Mac) and so on where as for client server, we don’t need to test in the browsers

Question 5

What is end-to-end testing?

Accepted Answer

Similar to system testing, the *macro* end of the test scale is testing a complete application in a situation that mimics real world use, such as interacting with a database, using network communication, or interacting with other hardware, application, or system

Question 6

What is security/penetration testing?

Accepted Answer

Security/penetration testing is testing how well the system is protected against unauthorized internal or external access, or willful damage This type of testing usually requires sophisticated testing techniques

Question 7

What is recovery/error testing?

Accepted Answer

Recovery/error testing is testing how well a system recovers from crashes, hardware failures, or other catastrophic problems

Question 8

What is the BEST WAY to write test cases?

Accepted Answer

1) List down usecases (taken from business cases) from function specs For each use case write a test case and categorize them into sanity tests, functionality, GUI, performance etc Then for each test case, write its workflow 2) For a GUI application - make a list of all GUI controls For each control start writing test cases for testing of the control UI, functionality (impact on the whole application), negative testing (for incorrect inputs), performance etc

Question 9

What is GUI testing? What elements will we cover in GUI testing?

Accepted Answer

In GUI testing, need to cover the customer requirement if don't have to validate Font size, colors, spellings(labels) etc Every application should follow Microsoft rules like - Controls should be Initcap (ie every label should start with Capital letter )Can observe that in Win applications every label starts with Caps - OK or Cancel button should exist - Controls should not be overlapped - Controls should be alligned properly (left side alignment is mandatory but the right side is optional) - Controls should be visible - Short cut keys should be provided - System menu should exist (ie if u press Alt key + Space bar a menu will appear at the left most corner ) - Mouse pointer events Colors, Label Names, Tab Order, Alignment, graphs , Navigation of the software to test in GUI Testing

Question 10

What's fuzz testing ?

Accepted Answer

1) List down usecases (taken from business cases) from function specs For each use case write a test case and categorize them into sanity tests, functionality, GUI, performance etc Then for each test case, write its workflow 2) For a GUI application - make a list of all GUI controls For each control start writing test cases for testing of the control UI, functionality (impact on the whole application), negative testing (for incorrect inputs), performance etc

Question 11

What is Binary Portability Testing?

Accepted Answer

Testing an executable application for portability across system platforms and environments, usually for conformation to an ABI specification

Question 12

What is the proper way of setting up an Android-powered device for app development?

Accepted Answer

The following are steps to be followed prior to actual application development in an Android-powered device: - Declare your application as “debuggable” in your Android Manifest - Turn on “USB Debugging” on your device - Set up your system to detect your device

Question 13

What Is the Google Android SDK?

Accepted Answer

The Google Android SDK is a toolset that developers need in order to write apps on Android enabled devices It contains a graphical interface that emulates an Android driven handheld environment, allowing them to test and debug their codes

Question 14

What is the function of an intent filter?

Accepted Answer

Because every component needs to indicate which intents they can respond to, intent filters are used to filter out intents that these components are willing to receive One or more intent filters are possible, depending on the services and activities that is going to make use of it

Question 15

What is the difference between a regular bitmap and a nine-patch image?

Accepted Answer

In general, a Nine-patch image allows resizing that can be used as background or other image size requirements for the target device The Nine-patch refers to the way you can resize the image: 4 corners that are unscaled, 4 edges that are scaled in 1 axis, and the middle one that can be scaled into both axes

Question 16

When is the best time to kill a foreground activity?

Accepted Answer

The foreground activity, being the most important among the other states, is only killed or terminated as a last resort, especially if it is already consuming too much memory When a memory paging state has been reach by a foreground activity, then it is killed so that the user interface can retain its responsiveness to the user

Question 17

Is it possible to use or add a fragment without using a user interface?

Accepted Answer

Yes, it is possible to do that, such as when you want to create a background behavior for a particular activity You can do this by using add(Fragment,string) method to add a fragment from the activity

Question 18

When is the onStop() method invoked?

Accepted Answer

A call to onStop method happens when an activity is no longer visible to the user, either because another activity has taken over or if in front of that activity

Question 19

What do you know about Intents?

Accepted Answer

- Notification messages to the user from an Android enabled device can be displayed using Intents - There are two types of Intents - Explicit Intent, Implicit Intent Implicit Intent: - In case of Implicit Intent, an intent is just declared - It is for the platform to find an activity that can respond to it - Since the target component is not declared, it is used for activating components of other applications Explicit Intent - Explicit intent specifies the particular activity that should respond to the intent - They are used for application internal messages

Question 20

What is AIDL?What data types are supported by AIDL?

Accepted Answer

- AIDL is the abbreviation for Android Interface Definition Language - It handles the interface requirements between a client and a service to communicate at the same level through interprocess communication - The process involves breaking down objects into primitives that are Android understandable AIDL supports following data types: - String - List - Map - CharSequence - All native Java data types like int,long, char and Boolean

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