Question 1

We want to declare a protocol constant and initialize it with the value "http"What should such a declaration look like?

Options :

A : let const protocol = "http";

B : let protocol; const protocol = "http";

C : const protocol; protocol = "http";

D : const protocol = "http";

Answer: D

Question 2

Analyze the following code:function fn(a) { console.log('test'); a--; if(a>2) fn(a);}fn(6);How many times will test appear on the screen?

Options :

A : One hundred twenty

B : One

C : Five

D : Four

Answer: D

Question 3

Analyze the following code:let point = {x: 10, y: 20};for (let f in point) { console.log(point[f]);}What will appear on the console as a result of its execution?

Options :

A : xy

B : 1020

C : point

D : 10

Answer: B

Question 4

Which sequence of if ... else statements is incorrect?

Options :

A : if ... else if ...

B : if ... else ...

C : if ... else ... else ...

D : if ... else if ... else ...

Answer: C

Question 5

We have initialized the name variable with the value "Alice"then we try to write the number 100 into it.let name = "Alice";name = 100;

Options :

A : the variable will retain the value "Alice"(we cannot modify the value that the variable has been initialized with).

B : the variable will contain the string "100"

C : the program will be aborted due to an error(we are trying to insert a value of a different type into the variablethan the value with which it was initialized).

D : the variable will contain the number 100

Answer: D

Free JSE-40-01 Mock Exam – Practice Online Confidently

Buying Options: