Following quiz provides Multiple Choice Questions (MCQs) related to Android. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - What is Android?
Android is a stack of software applications for mobile devices, which includes an operating system, middleware applications, and some key applications. It executes within own process and own instance of Dalvik Virtual Machine. DVM executes byte code and later transforms into .dex format files.
Q 2 -How many sizes are supported by Android?
X-large screens are having at least 960dp*720dp resolutions
Large screens are having at least 640dp*480dp resolutions
Normal screens are having at least 470dp*320dp resolutions
Small screens are having at least 426dp*320dp resolutions
Q 3 -How to pass the data from activity to services in android?
Using putExtra() method, we can send the data. While using it, we need to call setResult() method in services. We can also store data in a common database and access it on services as well as in Activity.
Q 4 - What is sleep mode in android?
CPU will be in sleeping mode and it does not take any commands except radio interface layer and alarm from mobile.
Q 5 - What is singleton class in android?
There is only an object which can be accessed by all other class.
Every emulator or device is allocated by 2 ports based on port availability.
Q 7 - In which technique, we can refresh the dynamic content in android?
Using with Ajax technology, we can refresh the dynamic data in web pages.
Q 8 - What is sandbox in android?
Each application runs securely in sandbox without interrupting another process. If an application is running in a sandbox, outside application can't touch sandbox application
Q 9 - Is it possible activity without UI in android?
Without UI, we can call an activity, It will do some background functionalities.
Q 10 - What is off-line synchronization in android?
Synchronization without internet in which we can take the application data without internet.