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CC - P2 - Promo 2028

CC - P2 - Promo 2028

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An incorrect answer will result in a point deduction

Select the correct statements

interface Transformable {
void trans

The program runs without errors and displays a message as output

It is impossible to cast the object creature

The object creature must be cast to Transformable before calling the two methods for the program to compile and run without error

The program generates a compilation error: the call creature.transform(); is incorrect

The program generates a compilation error: the call creature.summon(); is incorrect

The object creature must be cast to Dragon before calling the two methods for the program to compile and run without error

The program generates a compilation error: The Dragon class has not correctly implemented the abstract methods and must be declared as abstract

The program generates a compilation error: the instantiation MythicalCreature creature = new Dragon("Smaug", "Fire"); is incorrect

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Select the correct statement

abstract class Artifact {
protected String origin;
public Artifact(String origin) {

The program generates a compilation error: The AncientCoin class cannot be a concrete class

The program displays 'This ancient coin originates from Rome and is made of Gold.'

The program generates a compilation error: The Artifact class does not contain an abstract method

The program generates a runtime error

The program displays 'This ancient coin originates from Rome'

None of these answers

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What is the output of this program?

abstract class CelestialObject {
protected String name;
public CelestialObject(S

Sun is a star with a temperature of 0K.

Earth is a planet with 0 moon(s).

Sun is a star with a temperature of 5778K.

Earth is a planet with 1 moon(s).

Sun is a star with a temperature of 0K.

Earth is a planet with 1 moon(s).

Sun is a star with a temperature of 5778K.

Earth is a planet with 1 moon(s).

None of these answers

Compilation error

is a star with a temperature of 0K.

is a planet with 0 moon(s).

Sun is a star with a temperature of 5778K.

Earth is a planet with 1 moon(s).

null is a star with a temperature of 0K.

null is a planet with 0 moon(s).

Sun is a star with a temperature of 5778K.

Earth is a planet with 1 moon(s).

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What is the output of this program?
abstract class CelestialObject {
protected String name;
public CelestialObject(St

Sun is a planet with 1 moon(s).

Earth is a star with a temperature of 5778K.

Compilation error

Runtime error: The method calls describe in the main are not correctly executed

Sun is a star with a temperature of 5778K.

Earth is a planet with 1 moon(s).

None of these answers

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Recommended time: 2 min

The characteristic impedance of the transverse electromagnetic wave propagating in the dielectric separating the conductors in a transmission line is:

The product of the magnitude of the constant electric field and the magnitude of the constant magnetic field.

The ratio of the magnitude of the varying electric field to the magnitude of the varying magnetic field.

The product of the magnitude of the varying electric field and the magnitude of the varying magnetic field.

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