Whats a struct?

Correct Answer: For launching an application, we will need to create an intent that explicitly defines the activity that we wish to start For example: Code Intent intent = new Intent(this, MyTestActivityclass); startActivity(intent);

Correct Answer: Intents are created to define an action that we want to perform and the launches the appropriate activity from another application Code Intent intent = new Intent(IntentACTION_SEND); intentputExtra(IntentEXTRA_EMAIL, recipientArray); startActivity(intent);

Correct Answer: TelephonyManager class can be used to get the IMEI number It provides access to information about the telephony services on the device Code TelephonyManager mTelephonyMgr = (TelephonyManager) getSystemService(ContextTELEPHONY_SERVICE); String imei = mTelephonyMgrgetDeviceId();

Correct Answer: Each application gets its own Linux user ID and virtual machine which means that the application code runs in isolation from other applications

Correct Answer: Android uses Dalvik Virtual Machine (DVM) which requires a special bytecode We need to convert Java class files into Dalvik Executable files using an Android tool called "dx" In normal circumstances, developers will not be using this tool directly and build tools will care for the generation of DVM compatible files

Correct Answer: A NSArray?s contents can not be modified once it?s been created whereas a NSMutableArray can be modified as needed, ie items can be added/removed from it

Correct Answer: Yes the object is retained It creates a timer that calls a selector on the current threads run loop It may not be 100% precise time-wise as it attempts to dequeue the message from the run loop and perform the selector

Correct Answer: Create them as properties in the header that are retained In the viewDidUnload set the outlets to nil(ie selfoutlet = nil) Finally in dealloc make sure to release the outlet

Correct Answer: iOS Simulator can be used to test mobile applications Xcode tool that comes along with iOS SDK includes Xcode IDE as well as the iOS Simulator Xcode also includes all required tools and frameworks for building iOS apps However, it is strongly recommended to test the app on the real device before publishing it

Correct Answer: UI Automation API is used to automate test procedures Tests scripts are written in JavaScript to the UI Automation API This in turn simulates user interaction with the application and returns log information to the host computer