Question 1

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 2

Most errors in JavaScript code that the interpreter encounterswhile 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 consoleand the execution of the program is aborted.

C : An error message appears in the consoleand 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 3

The msg variable contains a String type value.Information about the number of characters of this string can be obtained using:

Options :

A : msg.length

B : msg.length()

C : msg.charsAt()

D : msg.chars

Answer: A

Question 4

Handling an exception thrown by the interpreter with catch causes:

Options :

A : the execution of the program to be automatically aborted,but we can generate our own error message(not necessarily in the console)

B : further executing of the program to depend on the codewe place in the execution handler.

C : the program to continue executing until the last instruction,but we can generate our own error message(not necessarily in the console).

D : nothing to happen, because catch is not used for exception handling.

Answer: B

Question 5

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

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