Flutter Test 1

What is the primary role of the Flutter Engine?

• A) Handling HTTP requests

• B) Rendering the UI using the Skia graphics library

• C) Managing app state and navigation

• D) Integrating with third-party libraries

During Flutter installation on Windows, which of the following commands is used to verify the installation and setup?
  

• A) `flutter verify`

• B) `flutter check`

• C) `flutter analyze`

• D) `flutter doctor`

When you create a new Flutter project, which directory contains the main entry point of the application?

• A) `lib/`

• B) `src/`

• C) `assets/`

• D) `test/'

In Dart, what is the correct way to declare a variable that can hold a null value?

• A) `int number = null;

• B) `int? number;

• C) `nullable int number;

• D) `optional int number;

Which of the following Dart code snippets correctly implements a switch-case statement to print "Hello" when greeting is "hi"?

• - A)

  dart

  switch (greeting) {

  case "hi":

  print("Hello");

  break;

  }

• - B)

  dart

  switch (greeting) {

  case "hi":

  print("Hello");

  break;

  }

• - C)

  dart

  switch (greeting) {

  if ("hi"):

  print("Hello");

  break;

  }

• - D)

  dart

  switch (greeting) {

  if (greeting == "hi"):

  print("Hello");

  break;

  }

What will be the output of the following Dart code?

int count = 0;

for (int i = 0; i < 5; i++) {

count += i;

}

print(count);

• - A) 5

• - B) 10

• - C) 15

• - D) 20

How can you define a function in Dart that takes an optional named parameter age with a default value of 25?

• - A)

  dart

  void printAge({int age: 25}) {

  print(age);

  }

• - B)

  dart

  void printAge([int age = 25]) {

  print(age);

  }

• - C)

  dart

  void printAge(int age = 25) {

  print(age);

  }

• - D)

  dart

  void printAge({int age = 25}) {

  print(age);

  }

How can you define a function in Dart that takes a positional optional parameter name with a default value of "Guest"?

• - A)

  dart

  void greet([String name = "Guest"]) {

  print("Hello, $name");

  }

• - B)

  dart

  void greet({String name = "Guest"}) {

  print("Hello, $name");

  }

• - C)

  dart

  void greet(String name = "Guest") {

  print("Hello, $name");

  }

• - D)

  dart

  void greet(String name) {

  name = name ?? "Guest";

  print("Hello, $name");

  }

Which of the following statements about Dart is TRUE?

• - A) Dart is dynamically typed

• - B) Dart does not support type inference

• - C) Dart can be compiled both ahead-of-time (AOT) and just-in-time (JIT)

• - D) Dart is not object-oriented

Which file in a Flutter project contains metadata about the project, such as its name, description, and dependencies?

• - A) main.dart

• - B) pubspec.yaml

• - C) index.html

• - D) app_config.json