Google Google Certifications ASSOCIATE-ANDROID-DEVELOPER Questions & Answers

• Question 81:

  As an example. Our MutableLiveData object, named mLapseTime, is not connected to a Room database, etc. How can we change the value in mLapseTime?

  A. mLapseTime.postValue("new String")

  B. mLapseTime.setValue(1000l)

  C. mLapseTime.changeValue(1000l)

  Correct Answer: B

• Question 82:

  To run a debuggable build variant you must use a build variant that includes

  A. minifyEnabled false in the build configuration

  B. debuggable true or debuggable false in the build configuration

  C. debuggable true in the build configuration

  Correct Answer: C

• Question 83:

  About running a debuggable build variant. Usually, you can just select the default "debug" variant that's included in every Android Studio project (even though it's not visible in the build.gradle file). But if you define new build types that should be debuggable, you must add `debuggable true' to the build type. Is that mostly true?

  A. Yes.

  B. No, if you define new build types that should be debuggable, you must add `debuggable false'

  C. No, the debug variant should be visible in the build.gradle file anyway.

  Correct Answer: A

• Question 84:

  Enable debugging on your device: If you are using the emulator, this is enabled by default. But for a connected device, you need to

  A. enable transfer data from the device in usb connection options.

  B. enable debugging in the device developer options.

  C. enable connection in bluetooth options.

  Correct Answer: B

• Question 85:

  If you want the Database Inspector to automatically update the data it presents as you interact with your running app, check the Live updates checkbox at the top of the inspector window. While live updates are enabled, what happens with the table in the inspector window?

  A. It is still editable. You can modify data in a table by double-clicking a cell, typing a new value, and pressing Enter.

  B. It becomes read-only and you cannot modify its values.

  C. It becomes read-only, but you cannot see its updated values before updating the data by clicking the Refresh table button at the top of the inspector window.

  Correct Answer: B

• Question 86:

  The Layout Inspector in Android Studio allows you to compare your app layout with design mockups, display a magnified or 3D view of your app, and examine details of its layout at runtime. When this is especially useful?

  A. when your layout is built entirely in XML rather than runtime and the layout is behaving expectedly.

  B. when your layout is built at runtime rather than entirely in XML and the layout is behaving unexpectedly.

  Correct Answer: B

• Question 87:

  Filter logcat messages. If in the filter menu, a filter option "Edit Filter Configuration"? means:

  A. Display the messages produced by the app code only (the default). Logcat filters the log messages using the PID of the active app.

  B. Apply no filters. Logcat displays all log messages from the device, regardless of which process you selected.

  C. Create or modify a custom filter. For example, you could create a filter to view log messages from two apps at the same time.

  Correct Answer: C

• Question 88:

  Filter logcat messages. If in the filter menu, a filter option "Show only selected application"? means:

  A. Display the messages produced by the app code only (the default). Logcat filters the log messages using the PID of the active app.

  B. Apply no filters. Logcat displays all log messages from the device, regardless of which process you selected.

  C. Create or modify a custom filter. For example, you could create a filter to view log messages from two apps at the same time.

  Correct Answer: A

• Question 89:

  The Log class allows you to create log messages that appear in logcat. Generally, you could use the following log methods: (Choose five.)

  A. Log.e(String, String) (error)

  B. Log.a(String, String) (all outputs)

  C. Log.w(String, String) (warning)

  D. Log.i(String, String) (information)

  E. Log.q(String, String) (questions)

  F. Log.d(String, String) (debug)

  G. Log.v(String, String) (verbose)

  Correct Answer: ACDFG

• Question 90:

  When your code execution reaches the breakpoint, Android Studio pauses execution of your app. You can then use the tools in the Debugger tab to identify the state of the app. With Step Out

  

  you can

  A. examine the object tree for a variable; expand it in the Variables view. If the Variables view is not visible

  B. evaluate an expression at the current execution point

  C. advance to the next line in the code (without entering a method)

  D. advance to the first line inside a method call

  E. advance to the next line outside the current method

  F. continue running the app normally

  Correct Answer: E