Question 1

Most errors in JavaScript code that the interpreter encounters

while the program is running cause exceptions to be thrown.

What do unhandled exception do?

Options :

A : The interpreter ignores unhandled exceptions,

the program continues to execute,

and no information is received.

B : An error message appears in the console

and the execution of the program is aborted.

C : An error message appears in the console

and program execution continues.

D : The interpreter removes the erroneous piece of code,

replaces it with corrected one,

and continues the program execution.

Answer: B

Question 2

Review the following code (note the variable name)let height = 170;

height = height + 10;

console.log(Height);

As a result of its execution, the following should appear in the console:

Options :

A : "Height"

B : 180

C : "Uncaught ReferenceError: Height is not defined"

D : 170

Answer: C

Question 3

If a variable stores the value false then the variable:

Options :

A : will no longer be used in the program.

B : is of the Math type.

C : is of the Logical type.

D : is of the Boolean type.

Answer: D

Question 4

Analyze the following code:

let x = false || true;

let y = "true" && "false";

let z = false && true;

console.log(`${x} ${y} ${z}`);

What will appear in the console as a result of its execution?

Options :

A :

false false false

B :

true false false

C :

false false true

D :

false true true

Answer: B

Question 5

Which of the following is not a loop instruction in JavaScript?

Options :

A : for ... of

B : for ... in

C : do ... while

D : if ... else

Answer: D

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