[FAST TRACK] ANDROID QUIZ 14

Is SimpleDateFormat thread safe?

• Yes

• No

A type of layout elements allows all included elements sort by order is

• RelativeLayout

• ConstraintLayout

• FrameLayout

• LinearLayout

Which design pattern can decouple an abstraction from Implementation?

• Proxy

• Facade

• Adapter

• Brigde

How can prevent singleton pattern to be broken by reflection?

• Using Static

• Using Enum

• Using Final

• Using Volatile

What will be the output of the following Java program?

• A

• B

• Compilation Error

• Runtime Error

Which of the following is a dialog class in Android?

• AlertDialog

• DatePicker Dialog

• ProgressDialog

• All of the above

Which of the following is NOT a valid usage for Intents?

• Activate and Activity

• Activate a Service

• Activate a Broadcast receiver

• Activate a SQLite DB Connection

Broadcast receivers are Android's implementation of a system-wide publish/subscribe mechanism, or more precisely, what design pattern?

• Observer

• Façade

• Mediator

• Command

In a use case diagram, the external entities of the system are called:

• use cases

• boundary objects

• actors

Sequence diagrams are used in:

• static view

• interaction view

• deployment view

• model management view.